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/wp-includes/ -> user.php (source)

   1  <?php
   2  /**
   3   * Core User API
   4   *
   5   * @package WordPress
   6   * @subpackage Users
   7   */
   8  
   9  /**
  10   * Authenticates and logs a user in with 'remember' capability.
  11   *
  12   * The credentials is an array that has 'user_login', 'user_password', and
  13   * 'remember' indices. If the credentials is not given, then the log in form
  14   * will be assumed and used if set.
  15   *
  16   * The various authentication cookies will be set by this function and will be
  17   * set for a longer period depending on if the 'remember' credential is set to
  18   * true.
  19   *
  20   * Note: wp_signon() doesn't handle setting the current user. This means that if the
  21   * function is called before the {@see 'init'} hook is fired, is_user_logged_in() will
  22   * evaluate as false until that point. If is_user_logged_in() is needed in conjunction
  23   * with wp_signon(), wp_set_current_user() should be called explicitly.
  24   *
  25   * @since 2.5.0
  26   *
  27   * @global string $auth_secure_cookie
  28   * @global wpdb   $wpdb               WordPress database abstraction object.
  29   *
  30   * @param array       $credentials {
  31   *     Optional. User info in order to sign on.
  32   *
  33   *     @type string $user_login    Username.
  34   *     @type string $user_password User password.
  35   *     @type bool   $remember      Whether to 'remember' the user. Increases the time
  36   *                                 that the cookie will be kept. Default false.
  37   * }
  38   * @param string|bool $secure_cookie Optional. Whether to use secure cookie.
  39   * @return WP_User|WP_Error WP_User on success, WP_Error on failure.
  40   */
  41  function wp_signon( $credentials = array(), $secure_cookie = '' ) {
  42      global $auth_secure_cookie, $wpdb;
  43  
  44      if ( empty( $credentials ) ) {
  45          $credentials = array(
  46              'user_login'    => '',
  47              'user_password' => '',
  48              'remember'      => false,
  49          );
  50  
  51          if ( ! empty( $_POST['log'] ) && is_string( $_POST['log'] ) ) {
  52              $credentials['user_login'] = wp_unslash( $_POST['log'] );
  53          }
  54          if ( ! empty( $_POST['pwd'] ) && is_string( $_POST['pwd'] ) ) {
  55              $credentials['user_password'] = $_POST['pwd'];
  56          }
  57          if ( ! empty( $_POST['rememberme'] ) ) {
  58              $credentials['remember'] = $_POST['rememberme'];
  59          }
  60      }
  61  
  62      if ( ! empty( $credentials['remember'] ) ) {
  63          $credentials['remember'] = true;
  64      } else {
  65          $credentials['remember'] = false;
  66      }
  67  
  68      /**
  69       * Fires before the user is authenticated.
  70       *
  71       * The variables passed to the callbacks are passed by reference,
  72       * and can be modified by callback functions.
  73       *
  74       * @since 1.5.1
  75       *
  76       * @todo Decide whether to deprecate the wp_authenticate action.
  77       *
  78       * @param string $user_login    Username (passed by reference).
  79       * @param string $user_password User password (passed by reference).
  80       */
  81      do_action_ref_array( 'wp_authenticate', array( &$credentials['user_login'], &$credentials['user_password'] ) );
  82  
  83      if ( '' === $secure_cookie ) {
  84          $secure_cookie = is_ssl();
  85      }
  86  
  87      /**
  88       * Filters whether to use a secure sign-on cookie.
  89       *
  90       * @since 3.1.0
  91       *
  92       * @param bool  $secure_cookie Whether to use a secure sign-on cookie.
  93       * @param array $credentials {
  94       *     Array of entered sign-on data.
  95       *
  96       *     @type string $user_login    Username.
  97       *     @type string $user_password Password entered.
  98       *     @type bool   $remember      Whether to 'remember' the user. Increases the time
  99       *                                 that the cookie will be kept. Default false.
 100       * }
 101       */
 102      $secure_cookie = apply_filters( 'secure_signon_cookie', $secure_cookie, $credentials );
 103  
 104      // XXX ugly hack to pass this to wp_authenticate_cookie().
 105      $auth_secure_cookie = $secure_cookie;
 106  
 107      add_filter( 'authenticate', 'wp_authenticate_cookie', 30, 3 );
 108  
 109      $user = wp_authenticate( $credentials['user_login'], $credentials['user_password'] );
 110  
 111      if ( is_wp_error( $user ) ) {
 112          return $user;
 113      }
 114  
 115      wp_set_auth_cookie( $user->ID, $credentials['remember'], $secure_cookie );
 116  
 117      // Clear `user_activation_key` after a successful login.
 118      if ( ! empty( $user->user_activation_key ) ) {
 119          $wpdb->update(
 120              $wpdb->users,
 121              array(
 122                  'user_activation_key' => '',
 123              ),
 124              array( 'ID' => $user->ID )
 125          );
 126  
 127          $user->user_activation_key = '';
 128      }
 129  
 130      /**
 131       * Fires after the user has successfully logged in.
 132       *
 133       * @since 1.5.0
 134       *
 135       * @param string  $user_login Username.
 136       * @param WP_User $user       WP_User object of the logged-in user.
 137       */
 138      do_action( 'wp_login', $user->user_login, $user );
 139  
 140      return $user;
 141  }
 142  
 143  /**
 144   * Authenticates a user, confirming the username and password are valid.
 145   *
 146   * @since 2.8.0
 147   *
 148   * @param WP_User|WP_Error|null $user     WP_User or WP_Error object from a previous callback. Default null.
 149   * @param string                $username Username for authentication.
 150   * @param string                $password Password for authentication.
 151   * @return WP_User|WP_Error WP_User on success, WP_Error on failure.
 152   */
 153  function wp_authenticate_username_password(
 154      $user,
 155      $username,
 156      #[\SensitiveParameter]
 157      $password
 158  ) {
 159      if ( $user instanceof WP_User ) {
 160          return $user;
 161      }
 162  
 163      if ( empty( $username ) || empty( $password ) ) {
 164          if ( is_wp_error( $user ) ) {
 165              return $user;
 166          }
 167  
 168          $error = new WP_Error();
 169  
 170          if ( empty( $username ) ) {
 171              $error->add( 'empty_username', __( '<strong>Error:</strong> The username field is empty.' ) );
 172          }
 173  
 174          if ( empty( $password ) ) {
 175              $error->add( 'empty_password', __( '<strong>Error:</strong> The password field is empty.' ) );
 176          }
 177  
 178          return $error;
 179      }
 180  
 181      $user = get_user_by( 'login', $username );
 182  
 183      if ( ! $user ) {
 184          return new WP_Error(
 185              'invalid_username',
 186              sprintf(
 187                  /* translators: %s: User name. */
 188                  __( '<strong>Error:</strong> The username <strong>%s</strong> is not registered on this site. If you are unsure of your username, try your email address instead.' ),
 189                  esc_html( $username )
 190              )
 191          );
 192      }
 193  
 194      /**
 195       * Filters whether the given user can be authenticated with the provided password.
 196       *
 197       * @since 2.5.0
 198       *
 199       * @param WP_User|WP_Error $user     WP_User or WP_Error object if a previous
 200       *                                   callback failed authentication.
 201       * @param string           $password Password to check against the user.
 202       */
 203      $user = apply_filters( 'wp_authenticate_user', $user, $password );
 204      if ( is_wp_error( $user ) ) {
 205          return $user;
 206      }
 207  
 208      $valid = wp_check_password( $password, $user->user_pass, $user->ID );
 209  
 210      if ( ! $valid ) {
 211          return new WP_Error(
 212              'incorrect_password',
 213              sprintf(
 214                  /* translators: %s: User name. */
 215                  __( '<strong>Error:</strong> The password you entered for the username %s is incorrect.' ),
 216                  '<strong>' . esc_html( $username ) . '</strong>'
 217              ) .
 218              ' <a href="' . wp_lostpassword_url() . '">' .
 219              __( 'Lost your password?' ) .
 220              '</a>'
 221          );
 222      }
 223  
 224      if ( wp_password_needs_rehash( $user->user_pass, $user->ID ) ) {
 225          wp_set_password( $password, $user->ID );
 226      }
 227  
 228      return $user;
 229  }
 230  
 231  /**
 232   * Authenticates a user using the email and password.
 233   *
 234   * @since 4.5.0
 235   *
 236   * @param WP_User|WP_Error|null $user     WP_User or WP_Error object if a previous
 237   *                                        callback failed authentication.
 238   * @param string                $email    Email address for authentication.
 239   * @param string                $password Password for authentication.
 240   * @return WP_User|WP_Error WP_User on success, WP_Error on failure.
 241   */
 242  function wp_authenticate_email_password(
 243      $user,
 244      $email,
 245      #[\SensitiveParameter]
 246      $password
 247  ) {
 248      if ( $user instanceof WP_User ) {
 249          return $user;
 250      }
 251  
 252      if ( empty( $email ) || empty( $password ) ) {
 253          if ( is_wp_error( $user ) ) {
 254              return $user;
 255          }
 256  
 257          $error = new WP_Error();
 258  
 259          if ( empty( $email ) ) {
 260              // Uses 'empty_username' for back-compat with wp_signon().
 261              $error->add( 'empty_username', __( '<strong>Error:</strong> The email field is empty.' ) );
 262          }
 263  
 264          if ( empty( $password ) ) {
 265              $error->add( 'empty_password', __( '<strong>Error:</strong> The password field is empty.' ) );
 266          }
 267  
 268          return $error;
 269      }
 270  
 271      if ( ! is_email( $email ) ) {
 272          return $user;
 273      }
 274  
 275      $user = get_user_by( 'email', $email );
 276  
 277      if ( ! $user ) {
 278          return new WP_Error(
 279              'invalid_email',
 280              __( 'Unknown email address. Check again or try your username.' )
 281          );
 282      }
 283  
 284      /** This filter is documented in wp-includes/user.php */
 285      $user = apply_filters( 'wp_authenticate_user', $user, $password );
 286  
 287      if ( is_wp_error( $user ) ) {
 288          return $user;
 289      }
 290  
 291      $valid = wp_check_password( $password, $user->user_pass, $user->ID );
 292  
 293      if ( ! $valid ) {
 294          return new WP_Error(
 295              'incorrect_password',
 296              sprintf(
 297                  /* translators: %s: Email address. */
 298                  __( '<strong>Error:</strong> The password you entered for the email address %s is incorrect.' ),
 299                  '<strong>' . esc_html( $email ) . '</strong>'
 300              ) .
 301              ' <a href="' . wp_lostpassword_url() . '">' .
 302              __( 'Lost your password?' ) .
 303              '</a>'
 304          );
 305      }
 306  
 307      if ( wp_password_needs_rehash( $user->user_pass, $user->ID ) ) {
 308          wp_set_password( $password, $user->ID );
 309      }
 310  
 311      return $user;
 312  }
 313  
 314  /**
 315   * Authenticates the user using the WordPress auth cookie.
 316   *
 317   * @since 2.8.0
 318   *
 319   * @global string $auth_secure_cookie
 320   *
 321   * @param WP_User|WP_Error|null $user     WP_User or WP_Error object from a previous callback. Default null.
 322   * @param string                $username Username. If not empty, cancels the cookie authentication.
 323   * @param string                $password Password. If not empty, cancels the cookie authentication.
 324   * @return WP_User|WP_Error WP_User on success, WP_Error on failure.
 325   */
 326  function wp_authenticate_cookie(
 327      $user,
 328      $username,
 329      #[\SensitiveParameter]
 330      $password
 331  ) {
 332      global $auth_secure_cookie;
 333  
 334      if ( $user instanceof WP_User ) {
 335          return $user;
 336      }
 337  
 338      if ( empty( $username ) && empty( $password ) ) {
 339          $user_id = wp_validate_auth_cookie();
 340          if ( $user_id ) {
 341              return new WP_User( $user_id );
 342          }
 343  
 344          if ( $auth_secure_cookie ) {
 345              $auth_cookie = SECURE_AUTH_COOKIE;
 346          } else {
 347              $auth_cookie = AUTH_COOKIE;
 348          }
 349  
 350          if ( ! empty( $_COOKIE[ $auth_cookie ] ) ) {
 351              return new WP_Error( 'expired_session', __( 'Please log in again.' ) );
 352          }
 353  
 354          // If the cookie is not set, be silent.
 355      }
 356  
 357      return $user;
 358  }
 359  
 360  /**
 361   * Authenticates the user using an application password.
 362   *
 363   * @since 5.6.0
 364   *
 365   * @param WP_User|WP_Error|null $input_user WP_User or WP_Error object if a previous
 366   *                                          callback failed authentication.
 367   * @param string                $username   Username for authentication.
 368   * @param string                $password   Password for authentication.
 369   * @return WP_User|WP_Error|null WP_User on success, WP_Error on failure, null if
 370   *                               null is passed in and this isn't an API request.
 371   */
 372  function wp_authenticate_application_password(
 373      $input_user,
 374      $username,
 375      #[\SensitiveParameter]
 376      $password
 377  ) {
 378      if ( $input_user instanceof WP_User ) {
 379          return $input_user;
 380      }
 381  
 382      if ( ! WP_Application_Passwords::is_in_use() ) {
 383          return $input_user;
 384      }
 385  
 386      // The 'REST_REQUEST' check here may happen too early for the constant to be available.
 387      $is_api_request = ( ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) );
 388  
 389      /**
 390       * Filters whether this is an API request that Application Passwords can be used on.
 391       *
 392       * By default, Application Passwords is available for the REST API and XML-RPC.
 393       *
 394       * @since 5.6.0
 395       *
 396       * @param bool $is_api_request If this is an acceptable API request.
 397       */
 398      $is_api_request = apply_filters( 'application_password_is_api_request', $is_api_request );
 399  
 400      if ( ! $is_api_request ) {
 401          return $input_user;
 402      }
 403  
 404      $error = null;
 405      $user  = get_user_by( 'login', $username );
 406  
 407      if ( ! $user && is_email( $username ) ) {
 408          $user = get_user_by( 'email', $username );
 409      }
 410  
 411      // If the login name is invalid, short circuit.
 412      if ( ! $user ) {
 413          if ( is_email( $username ) ) {
 414              $error = new WP_Error(
 415                  'invalid_email',
 416                  __( '<strong>Error:</strong> Unknown email address. Check again or try your username.' )
 417              );
 418          } else {
 419              $error = new WP_Error(
 420                  'invalid_username',
 421                  __( '<strong>Error:</strong> Unknown username. Check again or try your email address.' )
 422              );
 423          }
 424      } elseif ( ! wp_is_application_passwords_available() ) {
 425          $error = new WP_Error(
 426              'application_passwords_disabled',
 427              __( 'Application passwords are not available.' )
 428          );
 429      } elseif ( ! wp_is_application_passwords_available_for_user( $user ) ) {
 430          $error = new WP_Error(
 431              'application_passwords_disabled_for_user',
 432              __( 'Application passwords are not available for your account. Please contact the site administrator for assistance.' )
 433          );
 434      }
 435  
 436      if ( $error ) {
 437          /**
 438           * Fires when an application password failed to authenticate the user.
 439           *
 440           * @since 5.6.0
 441           *
 442           * @param WP_Error $error The authentication error.
 443           */
 444          do_action( 'application_password_failed_authentication', $error );
 445  
 446          return $error;
 447      }
 448  
 449      /*
 450       * Strips out anything non-alphanumeric. This is so passwords can be used with
 451       * or without spaces to indicate the groupings for readability.
 452       *
 453       * Generated application passwords are exclusively alphanumeric.
 454       */
 455      $password = preg_replace( '/[^a-z\d]/i', '', $password );
 456  
 457      $hashed_passwords = WP_Application_Passwords::get_user_application_passwords( $user->ID );
 458  
 459      foreach ( $hashed_passwords as $key => $item ) {
 460          if ( ! WP_Application_Passwords::check_password( $password, $item['password'] ) ) {
 461              continue;
 462          }
 463  
 464          $error = new WP_Error();
 465  
 466          /**
 467           * Fires when an application password has been successfully checked as valid.
 468           *
 469           * This allows for plugins to add additional constraints to prevent an application password from being used.
 470           *
 471           * @since 5.6.0
 472           *
 473           * @param WP_Error $error    The error object.
 474           * @param WP_User  $user     The user authenticating.
 475           * @param array    $item     The details about the application password.
 476           * @param string   $password The raw supplied password.
 477           */
 478          do_action( 'wp_authenticate_application_password_errors', $error, $user, $item, $password );
 479  
 480          if ( $error->has_errors() ) {
 481              /** This action is documented in wp-includes/user.php */
 482              do_action( 'application_password_failed_authentication', $error );
 483  
 484              return $error;
 485          }
 486  
 487          WP_Application_Passwords::record_application_password_usage( $user->ID, $item['uuid'] );
 488  
 489          /**
 490           * Fires after an application password was used for authentication.
 491           *
 492           * @since 5.6.0
 493           *
 494           * @param WP_User $user The user who was authenticated.
 495           * @param array   $item The application password used.
 496           */
 497          do_action( 'application_password_did_authenticate', $user, $item );
 498  
 499          return $user;
 500      }
 501  
 502      $error = new WP_Error(
 503          'incorrect_password',
 504          __( 'The provided password is an invalid application password.' )
 505      );
 506  
 507      /** This action is documented in wp-includes/user.php */
 508      do_action( 'application_password_failed_authentication', $error );
 509  
 510      return $error;
 511  }
 512  
 513  /**
 514   * Validates the application password credentials passed via Basic Authentication.
 515   *
 516   * @since 5.6.0
 517   *
 518   * @param int|false $input_user User ID if one has been determined, false otherwise.
 519   * @return int|false The authenticated user ID if successful, false otherwise.
 520   */
 521  function wp_validate_application_password( $input_user ) {
 522      // Don't authenticate twice.
 523      if ( ! empty( $input_user ) ) {
 524          return $input_user;
 525      }
 526  
 527      if ( ! wp_is_application_passwords_available() ) {
 528          return $input_user;
 529      }
 530  
 531      // Both $_SERVER['PHP_AUTH_USER'] and $_SERVER['PHP_AUTH_PW'] must be set in order to attempt authentication.
 532      if ( ! isset( $_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW'] ) ) {
 533          return $input_user;
 534      }
 535  
 536      $authenticated = wp_authenticate_application_password( null, $_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW'] );
 537  
 538      if ( $authenticated instanceof WP_User ) {
 539          return $authenticated->ID;
 540      }
 541  
 542      // If it wasn't a user what got returned, just pass on what we had received originally.
 543      return $input_user;
 544  }
 545  
 546  /**
 547   * For Multisite blogs, checks if the authenticated user has been marked as a
 548   * spammer, or if the user's primary blog has been marked as spam.
 549   *
 550   * @since 3.7.0
 551   *
 552   * @param WP_User|WP_Error|null $user WP_User or WP_Error object from a previous callback. Default null.
 553   * @return WP_User|WP_Error WP_User on success, WP_Error if the user is considered a spammer.
 554   */
 555  function wp_authenticate_spam_check( $user ) {
 556      if ( $user instanceof WP_User && is_multisite() ) {
 557          /**
 558           * Filters whether the user has been marked as a spammer.
 559           *
 560           * @since 3.7.0
 561           *
 562           * @param bool    $spammed Whether the user is considered a spammer.
 563           * @param WP_User $user    User to check against.
 564           */
 565          $spammed = apply_filters( 'check_is_user_spammed', is_user_spammy( $user ), $user );
 566  
 567          if ( $spammed ) {
 568              return new WP_Error( 'spammer_account', __( '<strong>Error:</strong> Your account has been marked as a spammer.' ) );
 569          }
 570      }
 571      return $user;
 572  }
 573  
 574  /**
 575   * Validates the logged-in cookie.
 576   *
 577   * Checks the logged-in cookie if the previous auth cookie could not be
 578   * validated and parsed.
 579   *
 580   * This is a callback for the {@see 'determine_current_user'} filter, rather than API.
 581   *
 582   * @since 3.9.0
 583   *
 584   * @param int|false $user_id The user ID (or false) as received from
 585   *                           the `determine_current_user` filter.
 586   * @return int|false User ID if validated, false otherwise. If a user ID from
 587   *                   an earlier filter callback is received, that value is returned.
 588   */
 589  function wp_validate_logged_in_cookie( $user_id ) {
 590      if ( $user_id ) {
 591          return $user_id;
 592      }
 593  
 594      if ( is_blog_admin() || is_network_admin() || empty( $_COOKIE[ LOGGED_IN_COOKIE ] ) ) {
 595          return false;
 596      }
 597  
 598      return wp_validate_auth_cookie( $_COOKIE[ LOGGED_IN_COOKIE ], 'logged_in' );
 599  }
 600  
 601  /**
 602   * Gets the number of posts a user has written.
 603   *
 604   * @since 3.0.0
 605   * @since 4.1.0 Added `$post_type` argument.
 606   * @since 4.3.0 Added `$public_only` argument. Added the ability to pass an array
 607   *              of post types to `$post_type`.
 608   *
 609   * @global wpdb $wpdb WordPress database abstraction object.
 610   *
 611   * @param int          $userid      User ID.
 612   * @param array|string $post_type   Optional. Single post type or array of post types to count the number of posts for. Default 'post'.
 613   * @param bool         $public_only Optional. Whether to only return counts for public posts. Default false.
 614   * @return string Number of posts the user has written in this post type.
 615   */
 616  function count_user_posts( $userid, $post_type = 'post', $public_only = false ) {
 617      global $wpdb;
 618  
 619      $post_type = array_unique( (array) $post_type );
 620      sort( $post_type );
 621  
 622      $where = get_posts_by_author_sql( $post_type, true, $userid, $public_only );
 623      $query = "SELECT COUNT(*) FROM $wpdb->posts $where";
 624  
 625      $last_changed = wp_cache_get_last_changed( 'posts' );
 626      $cache_key    = 'count_user_posts:' . md5( $query );
 627      $count        = wp_cache_get_salted( $cache_key, 'post-queries', $last_changed );
 628      if ( false === $count ) {
 629          $count = $wpdb->get_var( $query );
 630          wp_cache_set_salted( $cache_key, $count, 'post-queries', $last_changed );
 631      }
 632  
 633      /**
 634       * Filters the number of posts a user has written.
 635       *
 636       * @since 2.7.0
 637       * @since 4.1.0 Added `$post_type` argument.
 638       * @since 4.3.1 Added `$public_only` argument.
 639       *
 640       * @param string       $count       The user's post count as a numeric string.
 641       * @param int          $userid      User ID.
 642       * @param string|array $post_type   Single post type or array of post types to count the number of posts for.
 643       * @param bool         $public_only Whether to limit counted posts to public posts.
 644       */
 645      return apply_filters( 'get_usernumposts', $count, $userid, $post_type, $public_only );
 646  }
 647  
 648  /**
 649   * Gets the number of posts written by a list of users.
 650   *
 651   * @since 3.0.0
 652   * @since 6.9.0 The results are now cached.
 653   *
 654   * @global wpdb $wpdb WordPress database abstraction object.
 655   *
 656   * @param int[]           $users       Array of user IDs.
 657   * @param string|string[] $post_type   Optional. Single post type or array of post types to check. Defaults to 'post'.
 658   * @param bool            $public_only Optional. Only return counts for public posts.  Defaults to false.
 659   * @return array<int, string> Amount of posts each user has written, as strings, keyed by user ID.
 660   */
 661  function count_many_users_posts( $users, $post_type = 'post', $public_only = false ) {
 662      global $wpdb;
 663  
 664      if ( empty( $users ) || ! is_array( $users ) ) {
 665          return array();
 666      }
 667  
 668      /**
 669       * Filters whether to short-circuit performing the post counts.
 670       *
 671       * When filtering, return an array of posts counts as strings, keyed
 672       * by the user ID.
 673       *
 674       * @since 6.8.0
 675       *
 676       * @param string[]|null   $count       The post counts. Return a non-null value to short-circuit.
 677       * @param int[]           $users       Array of user IDs.
 678       * @param string|string[] $post_type   Single post type or array of post types to check.
 679       * @param bool            $public_only Whether to only return counts for public posts.
 680       */
 681      $pre = apply_filters( 'pre_count_many_users_posts', null, $users, $post_type, $public_only );
 682      if ( null !== $pre ) {
 683          return $pre;
 684      }
 685  
 686      // Cleanup the users array. Remove duplicates and sort for consistent ordering.
 687      $users = array_unique( array_filter( array_map( 'intval', $users ) ) );
 688      sort( $users );
 689  
 690      // Cleanup the post type argument. Remove duplicates and sort for consistent ordering.
 691      $post_type = array_unique( (array) $post_type );
 692      sort( $post_type );
 693  
 694      $userlist    = implode( ',', $users );
 695      $where       = get_posts_by_author_sql( $post_type, true, null, $public_only );
 696      $query       = "SELECT post_author, COUNT(*) FROM $wpdb->posts $where AND post_author IN ($userlist) GROUP BY post_author";
 697      $cache_key   = 'count_many_users_posts:' . md5( $query );
 698      $cache_salts = array( wp_cache_get_last_changed( 'posts' ), wp_cache_get_last_changed( 'users' ) );
 699      $count       = wp_cache_get_salted( $cache_key, 'post-queries', $cache_salts );
 700  
 701      if ( false === $count ) {
 702          $result = $wpdb->get_results( $query, ARRAY_N );
 703  
 704          $count = array_fill_keys( $users, 0 );
 705          foreach ( $result as $row ) {
 706              $count[ $row[0] ] = $row[1];
 707          }
 708  
 709          wp_cache_set_salted( $cache_key, $count, 'post-queries', $cache_salts, HOUR_IN_SECONDS );
 710      }
 711  
 712      return $count;
 713  }
 714  
 715  //
 716  // User option functions.
 717  //
 718  
 719  /**
 720   * Gets the current user's ID.
 721   *
 722   * @since MU (3.0.0)
 723   *
 724   * @return int The current user's ID, or 0 if no user is logged in.
 725   */
 726  function get_current_user_id() {
 727      if ( ! function_exists( 'wp_get_current_user' ) ) {
 728          return 0;
 729      }
 730      $user = wp_get_current_user();
 731      return (int) ( $user->ID ?? 0 );
 732  }
 733  
 734  /**
 735   * Retrieves user option that can be either per Site or per Network.
 736   *
 737   * If the user ID is not given, then the current user will be used instead. If
 738   * the user ID is given, then the user data will be retrieved. The filter for
 739   * the result, will also pass the original option name and finally the user data
 740   * object as the third parameter.
 741   *
 742   * The option will first check for the per site name and then the per Network name.
 743   *
 744   * @since 2.0.0
 745   *
 746   * @global wpdb $wpdb WordPress database abstraction object.
 747   *
 748   * @param string $option     User option name.
 749   * @param int    $user       Optional. User ID.
 750   * @param string $deprecated Use get_option() to check for an option in the options table.
 751   * @return mixed User option value on success, false on failure.
 752   */
 753  function get_user_option( $option, $user = 0, $deprecated = '' ) {
 754      global $wpdb;
 755  
 756      if ( ! empty( $deprecated ) ) {
 757          _deprecated_argument( __FUNCTION__, '3.0.0' );
 758      }
 759  
 760      if ( empty( $user ) ) {
 761          $user = get_current_user_id();
 762      }
 763  
 764      $user = get_userdata( $user );
 765      if ( ! $user ) {
 766          return false;
 767      }
 768  
 769      $prefix = $wpdb->get_blog_prefix();
 770      if ( $user->has_prop( $prefix . $option ) ) { // Blog-specific.
 771          $result = $user->get( $prefix . $option );
 772      } elseif ( $user->has_prop( $option ) ) { // User-specific and cross-blog.
 773          $result = $user->get( $option );
 774      } else {
 775          $result = false;
 776      }
 777  
 778      /**
 779       * Filters a specific user option value.
 780       *
 781       * The dynamic portion of the hook name, `$option`, refers to the user option name.
 782       *
 783       * @since 2.5.0
 784       *
 785       * @param mixed   $result Value for the user's option.
 786       * @param string  $option Name of the option being retrieved.
 787       * @param WP_User $user   WP_User object of the user whose option is being retrieved.
 788       */
 789      return apply_filters( "get_user_option_{$option}", $result, $option, $user );
 790  }
 791  
 792  /**
 793   * Updates user option with global blog capability.
 794   *
 795   * User options are just like user metadata except that they have support for
 796   * global blog options. If the 'is_global' parameter is false, which it is by default,
 797   * it will prepend the WordPress table prefix to the option name.
 798   *
 799   * Deletes the user option if $newvalue is empty.
 800   *
 801   * @since 2.0.0
 802   *
 803   * @global wpdb $wpdb WordPress database abstraction object.
 804   *
 805   * @param int    $user_id     User ID.
 806   * @param string $option_name User option name.
 807   * @param mixed  $newvalue    User option value.
 808   * @param bool   $is_global   Optional. Whether option name is global or blog specific.
 809   *                            Default false (blog specific).
 810   * @return int|bool User meta ID if the option didn't exist, true on successful update,
 811   *                  false on failure.
 812   */
 813  function update_user_option( $user_id, $option_name, $newvalue, $is_global = false ) {
 814      global $wpdb;
 815  
 816      if ( ! $is_global ) {
 817          $option_name = $wpdb->get_blog_prefix() . $option_name;
 818      }
 819  
 820      return update_user_meta( $user_id, $option_name, $newvalue );
 821  }
 822  
 823  /**
 824   * Deletes user option with global blog capability.
 825   *
 826   * User options are just like user metadata except that they have support for
 827   * global blog options. If the 'is_global' parameter is false, which it is by default,
 828   * it will prepend the WordPress table prefix to the option name.
 829   *
 830   * @since 3.0.0
 831   *
 832   * @global wpdb $wpdb WordPress database abstraction object.
 833   *
 834   * @param int    $user_id     User ID
 835   * @param string $option_name User option name.
 836   * @param bool   $is_global   Optional. Whether option name is global or blog specific.
 837   *                            Default false (blog specific).
 838   * @return bool True on success, false on failure.
 839   */
 840  function delete_user_option( $user_id, $option_name, $is_global = false ) {
 841      global $wpdb;
 842  
 843      if ( ! $is_global ) {
 844          $option_name = $wpdb->get_blog_prefix() . $option_name;
 845      }
 846  
 847      return delete_user_meta( $user_id, $option_name );
 848  }
 849  
 850  /**
 851   * Retrieves user info by user ID.
 852   *
 853   * @since 6.7.0
 854   *
 855   * @param int $user_id User ID.
 856   * @return WP_User|false WP_User object on success, false on failure.
 857   */
 858  function get_user( $user_id ) {
 859      return get_user_by( 'id', $user_id );
 860  }
 861  
 862  /**
 863   * Retrieves list of users matching criteria.
 864   *
 865   * @since 3.1.0
 866   *
 867   * @see WP_User_Query
 868   *
 869   * @param array $args Optional. Arguments to retrieve users. See WP_User_Query::prepare_query()
 870   *                    for more information on accepted arguments.
 871   * @return array List of users.
 872   */
 873  function get_users( $args = array() ) {
 874  
 875      $args                = wp_parse_args( $args );
 876      $args['count_total'] = false;
 877  
 878      $user_search = new WP_User_Query( $args );
 879  
 880      return (array) $user_search->get_results();
 881  }
 882  
 883  /**
 884   * Lists all the users of the site, with several options available.
 885   *
 886   * @since 5.9.0
 887   *
 888   * @param string|array $args {
 889   *     Optional. Array or string of default arguments.
 890   *
 891   *     @type string $orderby       How to sort the users. Accepts 'nicename', 'email', 'url', 'registered',
 892   *                                 'user_nicename', 'user_email', 'user_url', 'user_registered', 'name',
 893   *                                 'display_name', 'post_count', 'ID', 'meta_value', 'user_login'. Default 'name'.
 894   *     @type string $order         Sorting direction for $orderby. Accepts 'ASC', 'DESC'. Default 'ASC'.
 895   *     @type int    $number        Maximum users to return or display. Default empty (all users).
 896   *     @type bool   $exclude_admin Whether to exclude the 'admin' account, if it exists. Default true.
 897   *     @type bool   $show_fullname Whether to show the user's full name. Default false.
 898   *     @type string $feed          If not empty, show a link to the user's feed and use this text as the alt
 899   *                                 parameter of the link. Default empty.
 900   *     @type string $feed_image    If not empty, show a link to the user's feed and use this image URL as
 901   *                                 clickable anchor. Default empty.
 902   *     @type string $feed_type     The feed type to link to, such as 'rss2'. Defaults to default feed type.
 903   *     @type bool   $echo          Whether to output the result or instead return it. Default true.
 904   *     @type string $style         If 'list', each user is wrapped in an `<li>` element, otherwise the users
 905   *                                 will be separated by commas.
 906   *     @type bool   $html          Whether to list the items in HTML form or plaintext. Default true.
 907   *     @type string $exclude       An array, comma-, or space-separated list of user IDs to exclude. Default empty.
 908   *     @type string $include       An array, comma-, or space-separated list of user IDs to include. Default empty.
 909   * }
 910   * @return string|void The output if 'echo' is false, nothing otherwise.
 911   * @phpstan-return (
 912   *     $args is array{ echo: false|0|''|'0', ... }
 913   *         ? string
 914   *         : ( $args is ''|'0'|array ? void : string|null )
 915   * )
 916   */
 917  function wp_list_users( $args = array() ) {
 918      $defaults = array(
 919          'orderby'       => 'name',
 920          'order'         => 'ASC',
 921          'number'        => '',
 922          'exclude_admin' => true,
 923          'show_fullname' => false,
 924          'feed'          => '',
 925          'feed_image'    => '',
 926          'feed_type'     => '',
 927          'echo'          => true,
 928          'style'         => 'list',
 929          'html'          => true,
 930          'exclude'       => '',
 931          'include'       => '',
 932      );
 933  
 934      $parsed_args = wp_parse_args( $args, $defaults );
 935  
 936      $return = '';
 937  
 938      $query_args           = wp_array_slice_assoc( $parsed_args, array( 'orderby', 'order', 'number', 'exclude', 'include' ) );
 939      $query_args['fields'] = 'ids';
 940  
 941      /**
 942       * Filters the query arguments for the list of all users of the site.
 943       *
 944       * @since 6.1.0
 945       *
 946       * @param array $query_args  The query arguments for get_users().
 947       * @param array $parsed_args The arguments passed to wp_list_users() combined with the defaults.
 948       */
 949      $query_args = apply_filters( 'wp_list_users_args', $query_args, $parsed_args );
 950  
 951      $users = get_users( $query_args );
 952  
 953      foreach ( $users as $user_id ) {
 954          $user = get_userdata( $user_id );
 955  
 956          if ( $parsed_args['exclude_admin'] && 'admin' === $user->display_name ) {
 957              continue;
 958          }
 959  
 960          if ( $parsed_args['show_fullname'] && '' !== $user->first_name && '' !== $user->last_name ) {
 961              $name = sprintf(
 962                  /* translators: 1: User's first name, 2: Last name. */
 963                  _x( '%1$s %2$s', 'Display name based on first name and last name' ),
 964                  $user->first_name,
 965                  $user->last_name
 966              );
 967          } else {
 968              $name = $user->display_name;
 969          }
 970  
 971          if ( ! $parsed_args['html'] ) {
 972              $return .= $name . ', ';
 973  
 974              continue; // No need to go further to process HTML.
 975          }
 976  
 977          if ( 'list' === $parsed_args['style'] ) {
 978              $return .= '<li>';
 979          }
 980  
 981          $row = $name;
 982  
 983          if ( ! empty( $parsed_args['feed_image'] ) || ! empty( $parsed_args['feed'] ) ) {
 984              $row .= ' ';
 985              if ( empty( $parsed_args['feed_image'] ) ) {
 986                  $row .= '(';
 987              }
 988  
 989              $row .= '<a href="' . get_author_feed_link( $user->ID, $parsed_args['feed_type'] ) . '"';
 990  
 991              $alt = '';
 992              if ( ! empty( $parsed_args['feed'] ) ) {
 993                  $alt  = ' alt="' . esc_attr( $parsed_args['feed'] ) . '"';
 994                  $name = $parsed_args['feed'];
 995              }
 996  
 997              $row .= '>';
 998  
 999              if ( ! empty( $parsed_args['feed_image'] ) ) {
1000                  $row .= '<img src="' . esc_url( $parsed_args['feed_image'] ) . '" style="border: none;"' . $alt . ' />';
1001              } else {
1002                  $row .= $name;
1003              }
1004  
1005              $row .= '</a>';
1006  
1007              if ( empty( $parsed_args['feed_image'] ) ) {
1008                  $row .= ')';
1009              }
1010          }
1011  
1012          $return .= $row;
1013          $return .= ( 'list' === $parsed_args['style'] ) ? '</li>' : ', ';
1014      }
1015  
1016      $return = rtrim( $return, ', ' );
1017  
1018      if ( ! $parsed_args['echo'] ) {
1019          return $return;
1020      }
1021  
1022      echo $return;
1023  }
1024  
1025  /**
1026   * Gets the sites a user belongs to.
1027   *
1028   * @since 3.0.0
1029   * @since 4.7.0 Converted to use `get_sites()`.
1030   *
1031   * @global wpdb $wpdb WordPress database abstraction object.
1032   *
1033   * @param int  $user_id User ID
1034   * @param bool $all     Whether to retrieve all sites, or only sites that are not
1035   *                      marked as deleted, archived, or spam.
1036   * @return object[] A list of the user's sites. An empty array if the user doesn't exist
1037   *                  or belongs to no sites.
1038   */
1039  function get_blogs_of_user( $user_id, $all = false ) {
1040      global $wpdb;
1041  
1042      $user_id = (int) $user_id;
1043  
1044      // Logged out users can't have sites.
1045      if ( empty( $user_id ) ) {
1046          return array();
1047      }
1048  
1049      /**
1050       * Filters the list of a user's sites before it is populated.
1051       *
1052       * Returning a non-null value from the filter will effectively short circuit
1053       * get_blogs_of_user(), returning that value instead.
1054       *
1055       * @since 4.6.0
1056       *
1057       * @param null|object[] $sites   An array of site objects of which the user is a member.
1058       * @param int           $user_id User ID.
1059       * @param bool          $all     Whether the returned array should contain all sites, including
1060       *                               those marked 'deleted', 'archived', or 'spam'. Default false.
1061       */
1062      $sites = apply_filters( 'pre_get_blogs_of_user', null, $user_id, $all );
1063  
1064      if ( null !== $sites ) {
1065          return $sites;
1066      }
1067  
1068      $keys = get_user_meta( $user_id );
1069      if ( empty( $keys ) ) {
1070          return array();
1071      }
1072  
1073      if ( ! is_multisite() ) {
1074          $site_id                        = get_current_blog_id();
1075          $sites                          = array( $site_id => new stdClass() );
1076          $sites[ $site_id ]->userblog_id = $site_id;
1077          $sites[ $site_id ]->blogname    = get_option( 'blogname' );
1078          $sites[ $site_id ]->domain      = '';
1079          $sites[ $site_id ]->path        = '';
1080          $sites[ $site_id ]->site_id     = 1;
1081          $sites[ $site_id ]->siteurl     = get_option( 'siteurl' );
1082          $sites[ $site_id ]->archived    = 0;
1083          $sites[ $site_id ]->spam        = 0;
1084          $sites[ $site_id ]->deleted     = 0;
1085          return $sites;
1086      }
1087  
1088      $site_ids = array();
1089  
1090      if ( isset( $keys[ $wpdb->base_prefix . 'capabilities' ] ) && defined( 'MULTISITE' ) ) {
1091          $site_ids[] = 1;
1092          unset( $keys[ $wpdb->base_prefix . 'capabilities' ] );
1093      }
1094  
1095      $keys = array_keys( $keys );
1096  
1097      foreach ( $keys as $key ) {
1098          if ( ! str_ends_with( $key, 'capabilities' ) ) {
1099              continue;
1100          }
1101          if ( $wpdb->base_prefix && ! str_starts_with( $key, $wpdb->base_prefix ) ) {
1102              continue;
1103          }
1104          $site_id = str_replace( array( $wpdb->base_prefix, '_capabilities' ), '', $key );
1105          if ( ! is_numeric( $site_id ) ) {
1106              continue;
1107          }
1108  
1109          $site_ids[] = (int) $site_id;
1110      }
1111  
1112      $sites = array();
1113  
1114      if ( ! empty( $site_ids ) ) {
1115          $args = array(
1116              'number'   => '',
1117              'site__in' => $site_ids,
1118          );
1119          if ( ! $all ) {
1120              $args['archived'] = 0;
1121              $args['spam']     = 0;
1122              $args['deleted']  = 0;
1123          }
1124  
1125          $_sites = get_sites( $args );
1126  
1127          foreach ( $_sites as $site ) {
1128              $sites[ $site->id ] = (object) array(
1129                  'userblog_id' => $site->id,
1130                  'blogname'    => $site->blogname,
1131                  'domain'      => $site->domain,
1132                  'path'        => $site->path,
1133                  'site_id'     => $site->network_id,
1134                  'siteurl'     => $site->siteurl,
1135                  'archived'    => $site->archived,
1136                  'mature'      => $site->mature,
1137                  'spam'        => $site->spam,
1138                  'deleted'     => $site->deleted,
1139              );
1140          }
1141      }
1142  
1143      /**
1144       * Filters the list of sites a user belongs to.
1145       *
1146       * @since MU (3.0.0)
1147       *
1148       * @param object[] $sites   An array of site objects belonging to the user.
1149       * @param int      $user_id User ID.
1150       * @param bool     $all     Whether the returned sites array should contain all sites, including
1151       *                          those flagged for deletion, archived, or marked as spam.
1152       */
1153      return apply_filters( 'get_blogs_of_user', $sites, $user_id, $all );
1154  }
1155  
1156  /**
1157   * Finds out whether a user is a member of a given blog.
1158   *
1159   * @since MU (3.0.0)
1160   * @since 7.1.0 Introduced the {@see 'is_user_member_of_blog'} filter.
1161   *
1162   * @global wpdb $wpdb WordPress database abstraction object.
1163   *
1164   * @param int $user_id Optional. The unique ID of the user. Defaults to the current user.
1165   * @param int $blog_id Optional. ID of the blog to check. Defaults to the current site.
1166   * @return bool
1167   */
1168  function is_user_member_of_blog( $user_id = 0, $blog_id = 0 ) {
1169      global $wpdb;
1170  
1171      $user_id = (int) $user_id;
1172      $blog_id = (int) $blog_id;
1173  
1174      if ( empty( $user_id ) ) {
1175          $user_id = get_current_user_id();
1176      }
1177  
1178      /*
1179       * Technically not needed, but does save calls to get_site() and get_user_meta()
1180       * in the event that the function is called when a user isn't logged in.
1181       */
1182      if ( empty( $user_id ) ) {
1183          return false;
1184      } else {
1185          $user = get_userdata( $user_id );
1186          if ( ! $user instanceof WP_User ) {
1187              return false;
1188          }
1189      }
1190  
1191      if ( ! is_multisite() ) {
1192          return true;
1193      }
1194  
1195      if ( empty( $blog_id ) ) {
1196          $blog_id = get_current_blog_id();
1197      }
1198  
1199      $blog = get_site( $blog_id );
1200  
1201      if ( ! $blog || ! isset( $blog->domain ) || $blog->archived || $blog->spam || $blog->deleted ) {
1202          return false;
1203      }
1204  
1205      if ( 1 === $blog_id ) {
1206          $capabilities_key = $wpdb->base_prefix . 'capabilities';
1207      } else {
1208          $capabilities_key = $wpdb->base_prefix . $blog_id . '_capabilities';
1209      }
1210  
1211      $has_cap   = get_user_meta( $user_id, $capabilities_key, true );
1212      $is_member = is_array( $has_cap );
1213  
1214      /**
1215       * Filters whether the user is a member of a given blog.
1216       *
1217       * This filter only runs when the user and blog have both been resolved
1218       * to valid records on a multisite installation; it is not invoked for
1219       * logged-out requests, unknown users, or archived/spammed/deleted sites.
1220       *
1221       * @since 7.1.0
1222       *
1223       * @param bool $is_member Whether the user is a member of the blog.
1224       * @param int  $user_id   The user ID being checked.
1225       * @param int  $blog_id   The blog ID being checked.
1226       */
1227      return (bool) apply_filters( 'is_user_member_of_blog', $is_member, $user_id, $blog_id );
1228  }
1229  
1230  /**
1231   * Adds meta data to a user.
1232   *
1233   * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input.
1234   *
1235   * @since 3.0.0
1236   *
1237   * @param int    $user_id    User ID.
1238   * @param string $meta_key   Metadata name.
1239   * @param mixed  $meta_value Metadata value. Arrays and objects are stored as serialized data and
1240   *                           will be returned as the same type when retrieved. Other data types will
1241   *                           be stored as strings in the database:
1242   *                           - false is stored and retrieved as an empty string ('')
1243   *                           - true is stored and retrieved as '1'
1244   *                           - numbers (both integer and float) are stored and retrieved as strings
1245   *                           Must be serializable if non-scalar.
1246   * @param bool   $unique     Optional. Whether the same key should not be added.
1247   *                           Default false.
1248   * @return int|false Meta ID on success, false on failure.
1249   */
1250  function add_user_meta( $user_id, $meta_key, $meta_value, $unique = false ) {
1251      return add_metadata( 'user', $user_id, $meta_key, $meta_value, $unique );
1252  }
1253  
1254  /**
1255   * Removes metadata matching criteria from a user.
1256   *
1257   * You can match based on the key, or key and value. Removing based on key and
1258   * value, will keep from removing duplicate metadata with the same key. It also
1259   * allows removing all metadata matching key, if needed.
1260   *
1261   * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input.
1262   *
1263   * @since 3.0.0
1264   *
1265   * @link https://developer.wordpress.org/reference/functions/delete_user_meta/
1266   *
1267   * @param int    $user_id    User ID
1268   * @param string $meta_key   Metadata name.
1269   * @param mixed  $meta_value Optional. Metadata value. If provided,
1270   *                           rows will only be removed that match the value.
1271   *                           Must be serializable if non-scalar. Default empty.
1272   * @return bool True on success, false on failure.
1273   */
1274  function delete_user_meta( $user_id, $meta_key, $meta_value = '' ) {
1275      return delete_metadata( 'user', $user_id, $meta_key, $meta_value );
1276  }
1277  
1278  /**
1279   * Retrieves user meta field for a user.
1280   *
1281   * @since 3.0.0
1282   *
1283   * @link https://developer.wordpress.org/reference/functions/get_user_meta/
1284   *
1285   * @param int    $user_id User ID.
1286   * @param string $key     Optional. The meta key to retrieve. By default,
1287   *                        returns data for all keys.
1288   * @param bool   $single  Optional. Whether to return a single value.
1289   *                        This parameter has no effect if `$key` is not specified.
1290   *                        Default false.
1291   * @return mixed An array of values if `$single` is false.
1292   *               The value of meta data field if `$single` is true.
1293   *               False for an invalid `$user_id` (non-numeric, zero, or negative value).
1294   *               An empty array if a valid but non-existing user ID is passed and `$single` is false.
1295   *               An empty string if a valid but non-existing user ID is passed and `$single` is true.
1296   *               Note: Non-serialized values are returned as strings:
1297   *               - false values are returned as empty strings ('')
1298   *               - true values are returned as '1'
1299   *               - numbers (both integer and float) are returned as strings
1300   *               Arrays and objects retain their original type.
1301   */
1302  function get_user_meta( $user_id, $key = '', $single = false ) {
1303      return get_metadata( 'user', $user_id, $key, $single );
1304  }
1305  
1306  /**
1307   * Updates user meta field based on user ID.
1308   *
1309   * Use the $prev_value parameter to differentiate between meta fields with the
1310   * same key and user ID.
1311   *
1312   * If the meta field for the user does not exist, it will be added.
1313   *
1314   * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input.
1315   *
1316   * @since 3.0.0
1317   *
1318   * @link https://developer.wordpress.org/reference/functions/update_user_meta/
1319   *
1320   * @param int    $user_id    User ID.
1321   * @param string $meta_key   Metadata key.
1322   * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
1323   * @param mixed  $prev_value Optional. Previous value to check before updating.
1324   *                           If specified, only update existing metadata entries with
1325   *                           this value. Otherwise, update all entries. Default empty.
1326   * @return int|bool Meta ID if the key didn't exist, true on successful update,
1327   *                  false on failure or if the value passed to the function
1328   *                  is the same as the one that is already in the database.
1329   */
1330  function update_user_meta( $user_id, $meta_key, $meta_value, $prev_value = '' ) {
1331      return update_metadata( 'user', $user_id, $meta_key, $meta_value, $prev_value );
1332  }
1333  
1334  /**
1335   * Counts number of users who have each of the user roles.
1336   *
1337   * Assumes there are neither duplicated nor orphaned capabilities meta_values.
1338   * Assumes role names are unique phrases. Same assumption made by WP_User_Query::prepare_query()
1339   * Using $strategy = 'time' this is CPU-intensive and should handle around 10^7 users.
1340   * Using $strategy = 'memory' this is memory-intensive and should handle around 10^5 users, but see WP Bug #12257.
1341   *
1342   * @since 3.0.0
1343   * @since 4.4.0 The number of users with no role is now included in the `none` element.
1344   * @since 4.9.0 The `$site_id` parameter was added to support multisite.
1345   *
1346   * @global wpdb $wpdb WordPress database abstraction object.
1347   *
1348   * @param string   $strategy Optional. The computational strategy to use when counting the users.
1349   *                           Accepts either 'time' or 'memory'. Default 'time'.
1350   * @param int|null $site_id  Optional. The site ID to count users for. Defaults to the current site.
1351   * @return array {
1352   *     User counts.
1353   *
1354   *     @type int   $total_users Total number of users on the site.
1355   *     @type int[] $avail_roles Array of user counts keyed by user role.
1356   * }
1357   */
1358  function count_users( $strategy = 'time', $site_id = null ) {
1359      global $wpdb;
1360  
1361      // Initialize.
1362      if ( ! $site_id ) {
1363          $site_id = get_current_blog_id();
1364      }
1365  
1366      /**
1367       * Filters the user count before queries are run.
1368       *
1369       * Return a non-null value to cause count_users() to return early.
1370       *
1371       * @since 5.1.0
1372       *
1373       * @param null|array $result   The value to return instead. Default null to continue with the query.
1374       * @param string     $strategy Optional. The computational strategy to use when counting the users.
1375       *                             Accepts either 'time' or 'memory'. Default 'time'.
1376       * @param int        $site_id  The site ID to count users for.
1377       */
1378      $pre = apply_filters( 'pre_count_users', null, $strategy, $site_id );
1379  
1380      if ( null !== $pre ) {
1381          return $pre;
1382      }
1383  
1384      $blog_prefix = $wpdb->get_blog_prefix( $site_id );
1385      $result      = array();
1386  
1387      if ( 'time' === $strategy ) {
1388          if ( is_multisite() && get_current_blog_id() !== $site_id ) {
1389              switch_to_blog( $site_id );
1390              $avail_roles = wp_roles()->get_names();
1391              restore_current_blog();
1392          } else {
1393              $avail_roles = wp_roles()->get_names();
1394          }
1395  
1396          // Build a CPU-intensive query that will return concise information.
1397          $select_count = array();
1398          foreach ( $avail_roles as $this_role => $name ) {
1399              $select_count[] = $wpdb->prepare( 'COUNT(NULLIF(`meta_value` LIKE %s, false))', '%' . $wpdb->esc_like( '"' . $this_role . '"' ) . '%' );
1400          }
1401          $select_count[] = "COUNT(NULLIF(`meta_value` = 'a:0:{}', false))";
1402          $select_count   = implode( ', ', $select_count );
1403  
1404          // Add the meta_value index to the selection list, then run the query.
1405          $row = $wpdb->get_row(
1406              "
1407              SELECT {$select_count}, COUNT(*)
1408              FROM {$wpdb->usermeta}
1409              INNER JOIN {$wpdb->users} ON user_id = ID
1410              WHERE meta_key = '{$blog_prefix}capabilities'
1411          ",
1412              ARRAY_N
1413          );
1414  
1415          // Run the previous loop again to associate results with role names.
1416          $col         = 0;
1417          $role_counts = array();
1418          foreach ( $avail_roles as $this_role => $name ) {
1419              $count = (int) $row[ $col++ ];
1420              if ( $count > 0 ) {
1421                  $role_counts[ $this_role ] = $count;
1422              }
1423          }
1424  
1425          $role_counts['none'] = (int) $row[ $col++ ];
1426  
1427          // Get the meta_value index from the end of the result set.
1428          $total_users = (int) $row[ $col ];
1429  
1430          $result['total_users'] = $total_users;
1431          $result['avail_roles'] =& $role_counts;
1432      } else {
1433          $avail_roles = array(
1434              'none' => 0,
1435          );
1436  
1437          $users_of_blog = $wpdb->get_col(
1438              "
1439              SELECT meta_value
1440              FROM {$wpdb->usermeta}
1441              INNER JOIN {$wpdb->users} ON user_id = ID
1442              WHERE meta_key = '{$blog_prefix}capabilities'
1443          "
1444          );
1445  
1446          foreach ( $users_of_blog as $caps_meta ) {
1447              $b_roles = maybe_unserialize( $caps_meta );
1448              if ( ! is_array( $b_roles ) ) {
1449                  continue;
1450              }
1451              if ( empty( $b_roles ) ) {
1452                  ++$avail_roles['none'];
1453              }
1454              foreach ( $b_roles as $b_role => $val ) {
1455                  if ( isset( $avail_roles[ $b_role ] ) ) {
1456                      ++$avail_roles[ $b_role ];
1457                  } else {
1458                      $avail_roles[ $b_role ] = 1;
1459                  }
1460              }
1461          }
1462  
1463          $result['total_users'] = count( $users_of_blog );
1464          $result['avail_roles'] =& $avail_roles;
1465      }
1466  
1467      return $result;
1468  }
1469  
1470  /**
1471   * Returns the number of active users in your installation.
1472   *
1473   * Note that on a large site the count may be cached and only updated twice daily.
1474   *
1475   * @since MU (3.0.0)
1476   * @since 4.8.0 The `$network_id` parameter has been added.
1477   * @since 6.0.0 Moved to wp-includes/user.php.
1478   *
1479   * @param int|null $network_id ID of the network. Defaults to the current network.
1480   * @return int Number of active users on the network.
1481   */
1482  function get_user_count( $network_id = null ) {
1483      if ( ! is_multisite() && null !== $network_id ) {
1484          _doing_it_wrong(
1485              __FUNCTION__,
1486              sprintf(
1487                  /* translators: %s: $network_id */
1488                  __( 'Unable to pass %s if not using multisite.' ),
1489                  '<code>$network_id</code>'
1490              ),
1491              '6.0.0'
1492          );
1493      }
1494  
1495      return (int) get_network_option( $network_id, 'user_count', -1 );
1496  }
1497  
1498  /**
1499   * Updates the total count of users on the site if live user counting is enabled.
1500   *
1501   * @since 6.0.0
1502   *
1503   * @param int|null $network_id ID of the network. Defaults to the current network.
1504   * @return bool Whether the update was successful.
1505   */
1506  function wp_maybe_update_user_counts( $network_id = null ) {
1507      if ( ! is_multisite() && null !== $network_id ) {
1508          _doing_it_wrong(
1509              __FUNCTION__,
1510              sprintf(
1511                  /* translators: %s: $network_id */
1512                  __( 'Unable to pass %s if not using multisite.' ),
1513                  '<code>$network_id</code>'
1514              ),
1515              '6.0.0'
1516          );
1517      }
1518  
1519      $is_small_network = ! wp_is_large_user_count( $network_id );
1520      /** This filter is documented in wp-includes/ms-functions.php */
1521      if ( ! apply_filters( 'enable_live_network_counts', $is_small_network, 'users' ) ) {
1522          return false;
1523      }
1524  
1525      return wp_update_user_counts( $network_id );
1526  }
1527  
1528  /**
1529   * Updates the total count of users on the site.
1530   *
1531   * @global wpdb $wpdb WordPress database abstraction object.
1532   * @since 6.0.0
1533   *
1534   * @param int|null $network_id ID of the network. Defaults to the current network.
1535   * @return bool Whether the update was successful.
1536   */
1537  function wp_update_user_counts( $network_id = null ) {
1538      global $wpdb;
1539  
1540      if ( ! is_multisite() && null !== $network_id ) {
1541          _doing_it_wrong(
1542              __FUNCTION__,
1543              sprintf(
1544                  /* translators: %s: $network_id */
1545                  __( 'Unable to pass %s if not using multisite.' ),
1546                  '<code>$network_id</code>'
1547              ),
1548              '6.0.0'
1549          );
1550      }
1551  
1552      $query = "SELECT COUNT(ID) as c FROM $wpdb->users";
1553      if ( is_multisite() ) {
1554          $query .= " WHERE spam = '0' AND deleted = '0'";
1555      }
1556  
1557      $count = $wpdb->get_var( $query );
1558  
1559      return update_network_option( $network_id, 'user_count', $count );
1560  }
1561  
1562  /**
1563   * Schedules a recurring recalculation of the total count of users.
1564   *
1565   * @since 6.0.0
1566   */
1567  function wp_schedule_update_user_counts() {
1568      if ( ! is_main_site() ) {
1569          return;
1570      }
1571  
1572      if ( ! wp_next_scheduled( 'wp_update_user_counts' ) && ! wp_installing() ) {
1573          wp_schedule_event( time(), 'twicedaily', 'wp_update_user_counts' );
1574      }
1575  }
1576  
1577  /**
1578   * Determines whether the site has a large number of users.
1579   *
1580   * The default criteria for a large site is more than 10,000 users.
1581   *
1582   * @since 6.0.0
1583   *
1584   * @param int|null $network_id ID of the network. Defaults to the current network.
1585   * @return bool Whether the site has a large number of users.
1586   */
1587  function wp_is_large_user_count( $network_id = null ) {
1588      if ( ! is_multisite() && null !== $network_id ) {
1589          _doing_it_wrong(
1590              __FUNCTION__,
1591              sprintf(
1592                  /* translators: %s: $network_id */
1593                  __( 'Unable to pass %s if not using multisite.' ),
1594                  '<code>$network_id</code>'
1595              ),
1596              '6.0.0'
1597          );
1598      }
1599  
1600      $count = get_user_count( $network_id );
1601  
1602      /**
1603       * Filters whether the site is considered large, based on its number of users.
1604       *
1605       * @since 6.0.0
1606       *
1607       * @param bool     $is_large_user_count Whether the site has a large number of users.
1608       * @param int      $count               The total number of users.
1609       * @param int|null $network_id          ID of the network. `null` represents the current network.
1610       */
1611      return apply_filters( 'wp_is_large_user_count', $count > 10000, $count, $network_id );
1612  }
1613  
1614  //
1615  // Private helper functions.
1616  //
1617  
1618  /**
1619   * Sets up global user vars.
1620   *
1621   * Used by wp_set_current_user() for back compat. Might be deprecated in the future.
1622   *
1623   * @since 2.0.4
1624   *
1625   * @global string  $user_login    The user username for logging in
1626   * @global WP_User $userdata      User data.
1627   * @global int     $user_level    The level of the user
1628   * @global int     $user_ID       The ID of the user
1629   * @global string  $user_email    The email address of the user
1630   * @global string  $user_url      The url in the user's profile
1631   * @global string  $user_identity The display name of the user
1632   *
1633   * @param int $for_user_id Optional. User ID to set up global data. Default 0.
1634   */
1635  function setup_userdata( $for_user_id = 0 ) {
1636      global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_identity;
1637  
1638      if ( ! $for_user_id ) {
1639          $for_user_id = get_current_user_id();
1640      }
1641      $user = get_userdata( $for_user_id );
1642  
1643      if ( ! $user ) {
1644          $user_ID       = 0;
1645          $user_level    = 0;
1646          $userdata      = null;
1647          $user_login    = '';
1648          $user_email    = '';
1649          $user_url      = '';
1650          $user_identity = '';
1651          return;
1652      }
1653  
1654      $user_ID       = (int) $user->ID;
1655      $user_level    = (int) $user->user_level;
1656      $userdata      = $user;
1657      $user_login    = $user->user_login;
1658      $user_email    = $user->user_email;
1659      $user_url      = $user->user_url;
1660      $user_identity = $user->display_name;
1661  }
1662  
1663  /**
1664   * Creates dropdown HTML content of users.
1665   *
1666   * The content can either be displayed, which it is by default, or retrieved by
1667   * setting the 'echo' argument to false. The 'include' and 'exclude' arguments
1668   * are optional; if they are not specified, all users will be displayed. Only one
1669   * can be used in a single call, either 'include' or 'exclude', but not both.
1670   *
1671   * @since 2.3.0
1672   * @since 4.5.0 Added the 'display_name_with_login' value for 'show'.
1673   * @since 4.7.0 Added the 'role', 'role__in', and 'role__not_in' parameters.
1674   * @since 5.9.0 Added the 'capability', 'capability__in', and 'capability__not_in' parameters.
1675   *              Deprecated the 'who' parameter.
1676   *
1677   * @param array|string $args {
1678   *     Optional. Array or string of arguments to generate a drop-down of users.
1679   *     See WP_User_Query::prepare_query() for additional available arguments.
1680   *
1681   *     @type string          $show_option_all         Text to show as the drop-down default (all).
1682   *                                                    Default empty.
1683   *     @type string          $show_option_none        Text to show as the drop-down default when no
1684   *                                                    users were found. Default empty.
1685   *     @type int|string      $option_none_value       Value to use for `$show_option_none` when no users
1686   *                                                    were found. Default -1.
1687   *     @type string          $hide_if_only_one_author Whether to skip generating the drop-down
1688   *                                                    if only one user was found. Default empty.
1689   *     @type string          $orderby                 Field to order found users by. Accepts user fields.
1690   *                                                    Default 'display_name'.
1691   *     @type string          $order                   Whether to order users in ascending or descending
1692   *                                                    order. Accepts 'ASC' (ascending) or 'DESC' (descending).
1693   *                                                    Default 'ASC'.
1694   *     @type int[]|string    $include                 Array or comma-separated list of user IDs to include.
1695   *                                                    Default empty.
1696   *     @type int[]|string    $exclude                 Array or comma-separated list of user IDs to exclude.
1697   *                                                    Default empty.
1698   *     @type bool|int        $multi                   Whether to skip the ID attribute on the 'select' element.
1699   *                                                    Accepts 1|true or 0|false. Default 0|false.
1700   *     @type string          $show                    User data to display. If the selected item is empty
1701   *                                                    then the 'user_login' will be displayed in parentheses.
1702   *                                                    Accepts any user field, or 'display_name_with_login' to show
1703   *                                                    the display name with user_login in parentheses.
1704   *                                                    Default 'display_name'.
1705   *     @type int|bool        $echo                    Whether to echo or return the drop-down. Accepts 1|true (echo)
1706   *                                                    or 0|false (return). Default 1|true.
1707   *     @type int             $selected                Which user ID should be selected. Default 0.
1708   *     @type bool            $include_selected        Whether to always include the selected user ID in the drop-
1709   *                                                    down. Default false.
1710   *     @type string          $name                    Name attribute of select element. Default 'user'.
1711   *     @type string          $id                      ID attribute of the select element. Default is the value of `$name`.
1712   *     @type string          $class                   Class attribute of the select element. Default empty.
1713   *     @type int             $blog_id                 ID of blog (Multisite only). Default is ID of the current blog.
1714   *     @type string          $who                     Deprecated, use `$capability` instead.
1715   *                                                    Which type of users to query. Accepts only an empty string or
1716   *                                                    'authors'. Default empty (all users).
1717   *     @type string|string[] $role                    An array or a comma-separated list of role names that users
1718   *                                                    must match to be included in results. Note that this is
1719   *                                                    an inclusive list: users must match *each* role. Default empty.
1720   *     @type string[]        $role__in                An array of role names. Matched users must have at least one
1721   *                                                    of these roles. Default empty array.
1722   *     @type string[]        $role__not_in            An array of role names to exclude. Users matching one or more
1723   *                                                    of these roles will not be included in results. Default empty array.
1724   *     @type string|string[] $capability              An array or a comma-separated list of capability names that users
1725   *                                                    must match to be included in results. Note that this is
1726   *                                                    an inclusive list: users must match *each* capability.
1727   *                                                    Does NOT work for capabilities not in the database or filtered
1728   *                                                    via {@see 'map_meta_cap'}. Default empty.
1729   *     @type string[]        $capability__in          An array of capability names. Matched users must have at least one
1730   *                                                    of these capabilities.
1731   *                                                    Does NOT work for capabilities not in the database or filtered
1732   *                                                    via {@see 'map_meta_cap'}. Default empty array.
1733   *     @type string[]        $capability__not_in      An array of capability names to exclude. Users matching one or more
1734   *                                                    of these capabilities will not be included in results.
1735   *                                                    Does NOT work for capabilities not in the database or filtered
1736   *                                                    via {@see 'map_meta_cap'}. Default empty array.
1737   * }
1738   * @return string HTML dropdown list of users.
1739   */
1740  function wp_dropdown_users( $args = '' ) {
1741      $defaults = array(
1742          'show_option_all'         => '',
1743          'show_option_none'        => '',
1744          'hide_if_only_one_author' => '',
1745          'orderby'                 => 'display_name',
1746          'order'                   => 'ASC',
1747          'include'                 => '',
1748          'exclude'                 => '',
1749          'multi'                   => 0,
1750          'show'                    => 'display_name',
1751          'echo'                    => 1,
1752          'selected'                => 0,
1753          'name'                    => 'user',
1754          'class'                   => '',
1755          'id'                      => '',
1756          'blog_id'                 => get_current_blog_id(),
1757          'who'                     => '',
1758          'include_selected'        => false,
1759          'option_none_value'       => -1,
1760          'role'                    => '',
1761          'role__in'                => array(),
1762          'role__not_in'            => array(),
1763          'capability'              => '',
1764          'capability__in'          => array(),
1765          'capability__not_in'      => array(),
1766      );
1767  
1768      $defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
1769  
1770      $parsed_args = wp_parse_args( $args, $defaults );
1771  
1772      $query_args = wp_array_slice_assoc(
1773          $parsed_args,
1774          array(
1775              'blog_id',
1776              'include',
1777              'exclude',
1778              'orderby',
1779              'order',
1780              'who',
1781              'role',
1782              'role__in',
1783              'role__not_in',
1784              'capability',
1785              'capability__in',
1786              'capability__not_in',
1787          )
1788      );
1789  
1790      $fields = array( 'ID', 'user_login' );
1791  
1792      $show = ! empty( $parsed_args['show'] ) ? $parsed_args['show'] : 'display_name';
1793      if ( 'display_name_with_login' === $show ) {
1794          $fields[] = 'display_name';
1795      } else {
1796          $fields[] = $show;
1797      }
1798  
1799      $query_args['fields'] = $fields;
1800  
1801      $show_option_all   = $parsed_args['show_option_all'];
1802      $show_option_none  = $parsed_args['show_option_none'];
1803      $option_none_value = $parsed_args['option_none_value'];
1804  
1805      /**
1806       * Filters the query arguments for the list of users in the dropdown.
1807       *
1808       * @since 4.4.0
1809       *
1810       * @param array $query_args  The query arguments for get_users().
1811       * @param array $parsed_args The arguments passed to wp_dropdown_users() combined with the defaults.
1812       */
1813      $query_args = apply_filters( 'wp_dropdown_users_args', $query_args, $parsed_args );
1814  
1815      $users = get_users( $query_args );
1816  
1817      $output = '';
1818      if ( ! empty( $users ) && ( empty( $parsed_args['hide_if_only_one_author'] ) || count( $users ) > 1 ) ) {
1819          $name = esc_attr( $parsed_args['name'] );
1820          if ( $parsed_args['multi'] && ! $parsed_args['id'] ) {
1821              $id = '';
1822          } else {
1823              $id = $parsed_args['id'] ? " id='" . esc_attr( $parsed_args['id'] ) . "'" : " id='$name'";
1824          }
1825          $output = "<select name='{$name}'{$id} class='" . $parsed_args['class'] . "'>\n";
1826  
1827          if ( $show_option_all ) {
1828              $output .= "\t<option value='0'>$show_option_all</option>\n";
1829          }
1830  
1831          if ( $show_option_none ) {
1832              $_selected = selected( $option_none_value, $parsed_args['selected'], false );
1833              $output   .= "\t<option value='" . esc_attr( $option_none_value ) . "'$_selected>$show_option_none</option>\n";
1834          }
1835  
1836          if ( $parsed_args['include_selected'] && ( $parsed_args['selected'] > 0 ) ) {
1837              $found_selected          = false;
1838              $parsed_args['selected'] = (int) $parsed_args['selected'];
1839  
1840              foreach ( (array) $users as $user ) {
1841                  $user->ID = (int) $user->ID;
1842                  if ( $user->ID === $parsed_args['selected'] ) {
1843                      $found_selected = true;
1844                  }
1845              }
1846  
1847              if ( ! $found_selected ) {
1848                  $selected_user = get_userdata( $parsed_args['selected'] );
1849                  if ( $selected_user ) {
1850                      $users[] = $selected_user;
1851                  }
1852              }
1853          }
1854  
1855          foreach ( (array) $users as $user ) {
1856              if ( 'display_name_with_login' === $show ) {
1857                  /* translators: 1: User's display name, 2: User login. */
1858                  $display = sprintf( _x( '%1$s (%2$s)', 'user dropdown' ), $user->display_name, $user->user_login );
1859              } elseif ( ! empty( $user->$show ) ) {
1860                  $display = $user->$show;
1861              } else {
1862                  $display = '(' . $user->user_login . ')';
1863              }
1864  
1865              $_selected = selected( $user->ID, $parsed_args['selected'], false );
1866              $output   .= "\t<option value='$user->ID'$_selected>" . esc_html( $display ) . "</option>\n";
1867          }
1868  
1869          $output .= '</select>';
1870      }
1871  
1872      /**
1873       * Filters the wp_dropdown_users() HTML output.
1874       *
1875       * @since 2.3.0
1876       *
1877       * @param string $output HTML output generated by wp_dropdown_users().
1878       */
1879      $html = apply_filters( 'wp_dropdown_users', $output );
1880  
1881      if ( $parsed_args['echo'] ) {
1882          echo $html;
1883      }
1884      return $html;
1885  }
1886  
1887  /**
1888   * Sanitizes user field based on context.
1889   *
1890   * Possible context values are:  'raw', 'edit', 'db', 'display', 'attribute' and 'js'. The
1891   * 'display' context is used by default. 'attribute' and 'js' contexts are treated like 'display'
1892   * when calling filters.
1893   *
1894   * @since 2.3.0
1895   *
1896   * @param string $field   The user Object field name.
1897   * @param mixed  $value   The user Object value.
1898   * @param int    $user_id User ID.
1899   * @param string $context How to sanitize user fields. Looks for 'raw', 'edit', 'db', 'display',
1900   *                        'attribute' and 'js'.
1901   * @return mixed Sanitized value.
1902   */
1903  function sanitize_user_field( $field, $value, $user_id, $context ) {
1904      $int_fields = array( 'ID' );
1905      if ( in_array( $field, $int_fields, true ) ) {
1906          $value = (int) $value;
1907      }
1908  
1909      if ( 'raw' === $context ) {
1910          return $value;
1911      }
1912  
1913      if ( ! is_string( $value ) && ! is_numeric( $value ) ) {
1914          return $value;
1915      }
1916  
1917      $prefixed = str_contains( $field, 'user_' );
1918  
1919      if ( 'edit' === $context ) {
1920          if ( $prefixed ) {
1921  
1922              /** This filter is documented in wp-includes/post.php */
1923              $value = apply_filters( "edit_{$field}", $value, $user_id );
1924          } else {
1925  
1926              /**
1927               * Filters a user field value in the 'edit' context.
1928               *
1929               * The dynamic portion of the hook name, `$field`, refers to the prefixed user
1930               * field being filtered, such as 'user_login', 'user_email', 'first_name', etc.
1931               *
1932               * @since 2.9.0
1933               *
1934               * @param mixed $value   Value of the prefixed user field.
1935               * @param int   $user_id User ID.
1936               */
1937              $value = apply_filters( "edit_user_{$field}", $value, $user_id );
1938          }
1939  
1940          if ( 'description' === $field ) {
1941              $value = esc_html( $value ); // textarea_escaped?
1942          } else {
1943              $value = esc_attr( $value );
1944          }
1945      } elseif ( 'db' === $context ) {
1946          if ( $prefixed ) {
1947              /** This filter is documented in wp-includes/post.php */
1948              $value = apply_filters( "pre_{$field}", $value );
1949          } else {
1950  
1951              /**
1952               * Filters the value of a user field in the 'db' context.
1953               *
1954               * The dynamic portion of the hook name, `$field`, refers to the prefixed user
1955               * field being filtered, such as 'user_login', 'user_email', 'first_name', etc.
1956               *
1957               * @since 2.9.0
1958               *
1959               * @param mixed $value Value of the prefixed user field.
1960               */
1961              $value = apply_filters( "pre_user_{$field}", $value );
1962          }
1963      } else {
1964          // Use display filters by default.
1965          if ( $prefixed ) {
1966  
1967              /** This filter is documented in wp-includes/post.php */
1968              $value = apply_filters( "{$field}", $value, $user_id, $context );
1969          } else {
1970  
1971              /**
1972               * Filters the value of a user field in a standard context.
1973               *
1974               * The dynamic portion of the hook name, `$field`, refers to the prefixed user
1975               * field being filtered, such as 'user_login', 'user_email', 'first_name', etc.
1976               *
1977               * @since 2.9.0
1978               *
1979               * @param mixed  $value   The user object value to sanitize.
1980               * @param int    $user_id User ID.
1981               * @param string $context The context to filter within.
1982               */
1983              $value = apply_filters( "user_{$field}", $value, $user_id, $context );
1984          }
1985      }
1986  
1987      if ( 'user_url' === $field ) {
1988          $value = esc_url( $value );
1989      }
1990  
1991      if ( 'attribute' === $context ) {
1992          $value = esc_attr( $value );
1993      } elseif ( 'js' === $context ) {
1994          $value = esc_js( $value );
1995      }
1996  
1997      // Restore the type for integer fields after esc_attr().
1998      if ( in_array( $field, $int_fields, true ) ) {
1999          $value = (int) $value;
2000      }
2001  
2002      return $value;
2003  }
2004  
2005  /**
2006   * Updates all user caches.
2007   *
2008   * @since 3.0.0
2009   *
2010   * @param object|WP_User $user User object or database row to be cached
2011   * @return void|false Void on success, false on failure.
2012   */
2013  function update_user_caches( $user ) {
2014      if ( $user instanceof WP_User ) {
2015          if ( ! $user->exists() ) {
2016              return false;
2017          }
2018  
2019          $user = $user->data;
2020      }
2021  
2022      wp_cache_add( $user->ID, $user, 'users' );
2023      wp_cache_add( $user->user_login, $user->ID, 'userlogins' );
2024      wp_cache_add( $user->user_nicename, $user->ID, 'userslugs' );
2025  
2026      if ( ! empty( $user->user_email ) ) {
2027          wp_cache_add( $user->user_email, $user->ID, 'useremail' );
2028      }
2029  }
2030  
2031  /**
2032   * Cleans all user caches.
2033   *
2034   * @since 3.0.0
2035   * @since 4.4.0 'clean_user_cache' action was added.
2036   * @since 6.2.0 User metadata caches are now cleared.
2037   *
2038   * @param WP_User|int $user User object or ID to be cleaned from the cache
2039   */
2040  function clean_user_cache( $user ) {
2041      if ( is_numeric( $user ) ) {
2042          $user = new WP_User( $user );
2043      }
2044  
2045      if ( ! $user->exists() ) {
2046          return;
2047      }
2048  
2049      wp_cache_delete( $user->ID, 'users' );
2050      wp_cache_delete( $user->user_login, 'userlogins' );
2051      wp_cache_delete( $user->user_nicename, 'userslugs' );
2052  
2053      if ( ! empty( $user->user_email ) ) {
2054          wp_cache_delete( $user->user_email, 'useremail' );
2055      }
2056  
2057      wp_cache_delete( $user->ID, 'user_meta' );
2058      wp_cache_set_users_last_changed();
2059  
2060      /**
2061       * Fires immediately after the given user's cache is cleaned.
2062       *
2063       * @since 4.4.0
2064       *
2065       * @param int     $user_id User ID.
2066       * @param WP_User $user    User object.
2067       */
2068      do_action( 'clean_user_cache', $user->ID, $user );
2069  }
2070  
2071  /**
2072   * Determines whether the given username exists.
2073   *
2074   * For more information on this and similar theme functions, check out
2075   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
2076   * Conditional Tags} article in the Theme Developer Handbook.
2077   *
2078   * @since 2.0.0
2079   *
2080   * @param string $username The username to check for existence.
2081   * @return int|false The user ID on success, false on failure.
2082   */
2083  function username_exists( $username ) {
2084      $user = get_user_by( 'login', $username );
2085      if ( $user ) {
2086          $user_id = $user->ID;
2087      } else {
2088          $user_id = false;
2089      }
2090  
2091      /**
2092       * Filters whether the given username exists.
2093       *
2094       * @since 4.9.0
2095       *
2096       * @param int|false $user_id  The user ID associated with the username,
2097       *                            or false if the username does not exist.
2098       * @param string    $username The username to check for existence.
2099       */
2100      return apply_filters( 'username_exists', $user_id, $username );
2101  }
2102  
2103  /**
2104   * Determines whether the given email exists.
2105   *
2106   * For more information on this and similar theme functions, check out
2107   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
2108   * Conditional Tags} article in the Theme Developer Handbook.
2109   *
2110   * @since 2.1.0
2111   *
2112   * @param string $email The email to check for existence.
2113   * @return int|false The user ID on success, false on failure.
2114   */
2115  function email_exists( $email ) {
2116      $user = get_user_by( 'email', $email );
2117      if ( $user ) {
2118          $user_id = $user->ID;
2119      } else {
2120          $user_id = false;
2121      }
2122  
2123      /**
2124       * Filters whether the given email exists.
2125       *
2126       * @since 5.6.0
2127       *
2128       * @param int|false $user_id The user ID associated with the email,
2129       *                           or false if the email does not exist.
2130       * @param string    $email   The email to check for existence.
2131       */
2132      return apply_filters( 'email_exists', $user_id, $email );
2133  }
2134  
2135  /**
2136   * Checks whether a username is valid.
2137   *
2138   * @since 2.0.1
2139   * @since 4.4.0 Empty sanitized usernames are now considered invalid.
2140   *
2141   * @param string $username Username.
2142   * @return bool Whether username given is valid.
2143   */
2144  function validate_username( $username ) {
2145      $sanitized = sanitize_user( $username, true );
2146      $valid     = ( $sanitized === $username && ! empty( $sanitized ) );
2147  
2148      /**
2149       * Filters whether the provided username is valid.
2150       *
2151       * @since 2.0.1
2152       *
2153       * @param bool   $valid    Whether given username is valid.
2154       * @param string $username Username to check.
2155       */
2156      return apply_filters( 'validate_username', $valid, $username );
2157  }
2158  
2159  /**
2160   * Inserts a user into the database.
2161   *
2162   * Most of the `$userdata` array fields have filters associated with the values. Exceptions are
2163   * 'ID', 'rich_editing', 'syntax_highlighting', 'comment_shortcuts', 'admin_color', 'use_ssl',
2164   * 'user_registered', 'user_activation_key', 'spam', and 'role'. The filters have the prefix
2165   * 'pre_user_' followed by the field name. An example using 'description' would have the filter
2166   * called 'pre_user_description' that can be hooked into.
2167   *
2168   * @since 2.0.0
2169   * @since 3.6.0 The `aim`, `jabber`, and `yim` fields were removed as default user contact
2170   *              methods for new installations. See wp_get_user_contact_methods().
2171   * @since 4.7.0 The `locale` field can be passed to `$userdata`.
2172   * @since 5.3.0 The `user_activation_key` field can be passed to `$userdata`.
2173   * @since 5.3.0 The `spam` field can be passed to `$userdata` (Multisite only).
2174   * @since 5.9.0 The `meta_input` field can be passed to `$userdata` to allow addition of user meta data.
2175   *
2176   * @global wpdb $wpdb WordPress database abstraction object.
2177   *
2178   * @param array|object|WP_User $userdata {
2179   *     An array, object, or WP_User object of user data arguments.
2180   *
2181   *     @type int    $ID                   User ID. If supplied, the user will be updated.
2182   *     @type string $user_pass            The plain-text user password for new users.
2183   *                                        Hashed password for existing users.
2184   *     @type string $user_login           The user's login username.
2185   *     @type string $user_nicename        The URL-friendly user name.
2186   *     @type string $user_url             The user URL.
2187   *     @type string $user_email           The user email address.
2188   *     @type string $display_name         The user's display name.
2189   *                                        Default is the user's username.
2190   *     @type string $nickname             The user's nickname.
2191   *                                        Default is the user's username.
2192   *     @type string $first_name           The user's first name. For new users, will be used
2193   *                                        to build the first part of the user's display name
2194   *                                        if `$display_name` is not specified.
2195   *     @type string $last_name            The user's last name. For new users, will be used
2196   *                                        to build the second part of the user's display name
2197   *                                        if `$display_name` is not specified.
2198   *     @type string $description          The user's biographical description.
2199   *     @type string $rich_editing         Whether to enable the rich-editor for the user.
2200   *                                        Accepts 'true' or 'false' as a string literal,
2201   *                                        not boolean. Default 'true'.
2202   *     @type string $syntax_highlighting  Whether to enable the rich code editor for the user.
2203   *                                        Accepts 'true' or 'false' as a string literal,
2204   *                                        not boolean. Default 'true'.
2205   *     @type string $comment_shortcuts    Whether to enable comment moderation keyboard
2206   *                                        shortcuts for the user. Accepts 'true' or 'false'
2207   *                                        as a string literal, not boolean. Default 'false'.
2208   *     @type string $admin_color          Admin color scheme for the user. Default 'modern'.
2209   *     @type bool   $use_ssl              Whether the user should always access the admin over
2210   *                                        https. Default false.
2211   *     @type string $user_registered      Date the user registered in UTC. Format is 'Y-m-d H:i:s'.
2212   *     @type string $user_activation_key  Password reset key. Default empty.
2213   *     @type bool   $spam                 Multisite only. Whether the user is marked as spam.
2214   *                                        Default false.
2215   *     @type string $show_admin_bar_front Whether to display the Admin Bar for the user
2216   *                                        on the site's front end. Accepts 'true' or 'false'
2217   *                                        as a string literal, not boolean. Default 'true'.
2218   *     @type string $role                 User's role.
2219   *     @type string $locale               User's locale. Default empty.
2220   *     @type array  $meta_input           Array of custom user meta values keyed by meta key.
2221   *                                        Default empty.
2222   * }
2223   * @return int|WP_Error The newly created user's ID or a WP_Error object if the user could not
2224   *                      be created.
2225   */
2226  function wp_insert_user( $userdata ) {
2227      global $wpdb;
2228  
2229      if ( $userdata instanceof stdClass ) {
2230          $userdata = get_object_vars( $userdata );
2231      } elseif ( $userdata instanceof WP_User ) {
2232          $userdata = $userdata->to_array();
2233      } elseif ( $userdata instanceof Traversable ) {
2234          $userdata = iterator_to_array( $userdata );
2235      } elseif ( $userdata instanceof ArrayAccess ) {
2236          $userdata_obj = $userdata;
2237          $userdata     = array();
2238          foreach (
2239              array(
2240                  'ID',
2241                  'user_pass',
2242                  'user_login',
2243                  'user_nicename',
2244                  'user_url',
2245                  'user_email',
2246                  'display_name',
2247                  'nickname',
2248                  'first_name',
2249                  'last_name',
2250                  'description',
2251                  'rich_editing',
2252                  'syntax_highlighting',
2253                  'infinite_scrolling',
2254                  'comment_shortcuts',
2255                  'admin_color',
2256                  'use_ssl',
2257                  'user_registered',
2258                  'user_activation_key',
2259                  'spam',
2260                  'show_admin_bar_front',
2261                  'role',
2262                  'locale',
2263                  'meta_input',
2264              ) as $key
2265          ) {
2266              if ( isset( $userdata_obj[ $key ] ) ) {
2267                  $userdata[ $key ] = $userdata_obj[ $key ];
2268              }
2269          }
2270      } else {
2271          $userdata = (array) $userdata;
2272      }
2273  
2274      // Are we updating or creating?
2275      if ( ! empty( $userdata['ID'] ) ) {
2276          $user_id       = (int) $userdata['ID'];
2277          $update        = true;
2278          $old_user_data = get_userdata( $user_id );
2279  
2280          if ( ! $old_user_data ) {
2281              return new WP_Error( 'invalid_user_id', __( 'Invalid user ID.' ) );
2282          }
2283  
2284          // Slash current user email to compare it later with slashed new user email.
2285          $old_user_data->user_email = wp_slash( $old_user_data->user_email );
2286  
2287          // Hashed in wp_update_user(), plaintext if called directly.
2288          $user_pass = ! empty( $userdata['user_pass'] ) ? $userdata['user_pass'] : $old_user_data->user_pass;
2289      } else {
2290          $update = false;
2291  
2292          if ( empty( $userdata['user_pass'] ) ) {
2293              wp_trigger_error(
2294                  __FUNCTION__,
2295                  __( 'The user_pass field is required when creating a new user. The user will need to reset their password before logging in.' ),
2296                  E_USER_WARNING
2297              );
2298  
2299              // Set the password as an empty string to force the password reset flow.
2300              $userdata['user_pass'] = '';
2301          }
2302  
2303          // Hash the password.
2304          $user_pass = wp_hash_password( $userdata['user_pass'] );
2305      }
2306  
2307      $sanitized_user_login = sanitize_user( $userdata['user_login'] ?? '', true );
2308  
2309      /**
2310       * Filters a username after it has been sanitized.
2311       *
2312       * This filter is called before the user is created or updated.
2313       *
2314       * @since 2.0.3
2315       *
2316       * @param string $sanitized_user_login Username after it has been sanitized.
2317       */
2318      $pre_user_login = apply_filters( 'pre_user_login', $sanitized_user_login );
2319  
2320      // Remove any non-printable chars from the login string to see if we have ended up with an empty username.
2321      $user_login = trim( $pre_user_login );
2322  
2323      // user_login must be between 0 and 60 characters.
2324      if ( empty( $user_login ) ) {
2325          return new WP_Error( 'empty_user_login', __( 'Cannot create a user with an empty login name.' ) );
2326      } elseif ( mb_strlen( $user_login ) > 60 ) {
2327          return new WP_Error( 'user_login_too_long', __( 'Username may not be longer than 60 characters.' ) );
2328      }
2329  
2330      if ( ! $update && username_exists( $user_login ) ) {
2331          return new WP_Error( 'existing_user_login', __( 'Sorry, that username already exists!' ) );
2332      }
2333  
2334      /**
2335       * Filters the list of disallowed usernames.
2336       *
2337       * @since 4.4.0
2338       *
2339       * @param array $usernames Array of disallowed usernames.
2340       */
2341      $illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
2342  
2343      if ( in_array( strtolower( $user_login ), array_map( 'strtolower', $illegal_logins ), true ) ) {
2344          return new WP_Error( 'invalid_username', __( 'Sorry, that username is not allowed.' ) );
2345      }
2346  
2347      /*
2348       * If a nicename is provided, remove unsafe user characters before using it.
2349       * Otherwise build a nicename from the user_login.
2350       */
2351      if ( ! empty( $userdata['user_nicename'] ) ) {
2352          $user_nicename = sanitize_user( $userdata['user_nicename'], true );
2353      } else {
2354          $user_nicename = mb_substr( $user_login, 0, 50 );
2355      }
2356  
2357      $user_nicename = sanitize_title( $user_nicename );
2358  
2359      /**
2360       * Filters a user's nicename before the user is created or updated.
2361       *
2362       * @since 2.0.3
2363       *
2364       * @param string $user_nicename The user's nicename.
2365       */
2366      $user_nicename = apply_filters( 'pre_user_nicename', $user_nicename );
2367  
2368      // Check if the sanitized nicename is empty.
2369      if ( empty( $user_nicename ) ) {
2370          return new WP_Error( 'empty_user_nicename', __( 'Cannot create a user with an empty nicename.' ) );
2371      } elseif ( mb_strlen( $user_nicename ) > 50 ) {
2372          return new WP_Error( 'user_nicename_too_long', __( 'Nicename may not be longer than 50 characters.' ) );
2373      }
2374  
2375      $user_nicename_check = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->users WHERE user_nicename = %s AND user_login != %s LIMIT 1", $user_nicename, $user_login ) );
2376  
2377      if ( $user_nicename_check ) {
2378          $suffix = 2;
2379          while ( $user_nicename_check ) {
2380              // user_nicename allows 50 chars. Subtract one for a hyphen, plus the length of the suffix.
2381              $base_length         = 49 - mb_strlen( $suffix );
2382              $alt_user_nicename   = mb_substr( $user_nicename, 0, $base_length ) . "-$suffix";
2383              $user_nicename_check = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->users WHERE user_nicename = %s AND user_login != %s LIMIT 1", $alt_user_nicename, $user_login ) );
2384              ++$suffix;
2385          }
2386          $user_nicename = $alt_user_nicename;
2387      }
2388  
2389      $raw_user_email = empty( $userdata['user_email'] ) ? '' : $userdata['user_email'];
2390  
2391      /**
2392       * Filters a user's email before the user is created or updated.
2393       *
2394       * @since 2.0.3
2395       *
2396       * @param string $raw_user_email The user's email.
2397       */
2398      $user_email = apply_filters( 'pre_user_email', $raw_user_email );
2399  
2400      /*
2401       * If there is no update, just check for `email_exists`. If there is an update,
2402       * check if current email and new email are the same, and check `email_exists`
2403       * accordingly.
2404       */
2405      if ( ( ! $update || ( ! empty( $old_user_data ) && 0 !== strcasecmp( $user_email, $old_user_data->user_email ) ) )
2406          && ! defined( 'WP_IMPORTING' )
2407          && email_exists( $user_email )
2408      ) {
2409          return new WP_Error( 'existing_user_email', __( 'Sorry, that email address is already used!' ) );
2410      }
2411  
2412      $raw_user_url = empty( $userdata['user_url'] ) ? '' : $userdata['user_url'];
2413  
2414      /**
2415       * Filters a user's URL before the user is created or updated.
2416       *
2417       * @since 2.0.3
2418       *
2419       * @param string $raw_user_url The user's URL.
2420       */
2421      $user_url = apply_filters( 'pre_user_url', $raw_user_url );
2422  
2423      if ( mb_strlen( $user_url ) > 100 ) {
2424          return new WP_Error( 'user_url_too_long', __( 'User URL may not be longer than 100 characters.' ) );
2425      }
2426  
2427      $user_registered = empty( $userdata['user_registered'] ) ? gmdate( 'Y-m-d H:i:s' ) : $userdata['user_registered'];
2428  
2429      $user_activation_key = empty( $userdata['user_activation_key'] ) ? '' : $userdata['user_activation_key'];
2430  
2431      if ( ! empty( $userdata['spam'] ) && ! is_multisite() ) {
2432          return new WP_Error( 'no_spam', __( 'Sorry, marking a user as spam is only supported on Multisite.' ) );
2433      }
2434  
2435      $spam = empty( $userdata['spam'] ) ? 0 : (bool) $userdata['spam'];
2436  
2437      // Store values to save in user meta.
2438      $meta = array();
2439  
2440      $nickname = empty( $userdata['nickname'] ) ? $user_login : $userdata['nickname'];
2441  
2442      /**
2443       * Filters a user's nickname before the user is created or updated.
2444       *
2445       * @since 2.0.3
2446       *
2447       * @param string $nickname The user's nickname.
2448       */
2449      $meta['nickname'] = apply_filters( 'pre_user_nickname', $nickname );
2450  
2451      $first_name = empty( $userdata['first_name'] ) ? '' : $userdata['first_name'];
2452  
2453      /**
2454       * Filters a user's first name before the user is created or updated.
2455       *
2456       * @since 2.0.3
2457       *
2458       * @param string $first_name The user's first name.
2459       */
2460      $meta['first_name'] = apply_filters( 'pre_user_first_name', $first_name );
2461  
2462      $last_name = empty( $userdata['last_name'] ) ? '' : $userdata['last_name'];
2463  
2464      /**
2465       * Filters a user's last name before the user is created or updated.
2466       *
2467       * @since 2.0.3
2468       *
2469       * @param string $last_name The user's last name.
2470       */
2471      $meta['last_name'] = apply_filters( 'pre_user_last_name', $last_name );
2472  
2473      if ( empty( $userdata['display_name'] ) ) {
2474          if ( $update ) {
2475              $display_name = $user_login;
2476          } elseif ( $meta['first_name'] && $meta['last_name'] ) {
2477              $display_name = sprintf(
2478                  /* translators: 1: User's first name, 2: Last name. */
2479                  _x( '%1$s %2$s', 'Display name based on first name and last name' ),
2480                  $meta['first_name'],
2481                  $meta['last_name']
2482              );
2483          } elseif ( $meta['first_name'] ) {
2484              $display_name = $meta['first_name'];
2485          } elseif ( $meta['last_name'] ) {
2486              $display_name = $meta['last_name'];
2487          } else {
2488              $display_name = $user_login;
2489          }
2490      } else {
2491          $display_name = $userdata['display_name'];
2492      }
2493  
2494      /**
2495       * Filters a user's display name before the user is created or updated.
2496       *
2497       * @since 2.0.3
2498       *
2499       * @param string $display_name The user's display name.
2500       */
2501      $display_name = apply_filters( 'pre_user_display_name', $display_name );
2502  
2503      $description = empty( $userdata['description'] ) ? '' : $userdata['description'];
2504  
2505      /**
2506       * Filters a user's description before the user is created or updated.
2507       *
2508       * @since 2.0.3
2509       *
2510       * @param string $description The user's description.
2511       */
2512      $meta['description'] = apply_filters( 'pre_user_description', $description );
2513  
2514      $meta['rich_editing'] = empty( $userdata['rich_editing'] ) ? 'true' : $userdata['rich_editing'];
2515  
2516      $meta['syntax_highlighting'] = empty( $userdata['syntax_highlighting'] ) ? 'true' : $userdata['syntax_highlighting'];
2517  
2518      $meta['infinite_scrolling'] = empty( $userdata['infinite_scrolling'] ) ? 'true' : $userdata['infinite_scrolling'];
2519  
2520      $meta['comment_shortcuts'] = empty( $userdata['comment_shortcuts'] ) || 'false' === $userdata['comment_shortcuts'] ? 'false' : 'true';
2521  
2522      $admin_color         = empty( $userdata['admin_color'] ) ? 'modern' : $userdata['admin_color'];
2523      $meta['admin_color'] = preg_replace( '|[^a-z0-9 _.\-@]|i', '', $admin_color );
2524  
2525      $meta['use_ssl'] = empty( $userdata['use_ssl'] ) ? '0' : '1';
2526  
2527      $meta['show_admin_bar_front'] = empty( $userdata['show_admin_bar_front'] ) ? 'true' : $userdata['show_admin_bar_front'];
2528  
2529      $meta['locale'] = $userdata['locale'] ?? '';
2530  
2531      $compacted = compact( 'user_pass', 'user_nicename', 'user_email', 'user_url', 'user_registered', 'user_activation_key', 'display_name' );
2532      $data      = wp_unslash( $compacted );
2533  
2534      if ( ! $update ) {
2535          $data = $data + compact( 'user_login' );
2536      }
2537  
2538      if ( is_multisite() ) {
2539          $data = $data + compact( 'spam' );
2540      }
2541  
2542      /**
2543       * Filters user data before the record is created or updated.
2544       *
2545       * It only includes data in the users table, not any user metadata.
2546       *
2547       * @since 4.9.0
2548       * @since 5.8.0 The `$userdata` parameter was added.
2549       * @since 6.8.0 The user's password is now hashed using bcrypt by default instead of phpass.
2550       *
2551       * @param array    $data {
2552       *     Values and keys for the user.
2553       *
2554       *     @type string $user_login      The user's login. Only included if $update == false
2555       *     @type string $user_pass       The user's password.
2556       *     @type string $user_email      The user's email.
2557       *     @type string $user_url        The user's url.
2558       *     @type string $user_nicename   The user's nice name. Defaults to a URL-safe version of user's login.
2559       *     @type string $display_name    The user's display name.
2560       *     @type string $user_registered MySQL timestamp describing the moment when the user registered. Defaults to
2561       *                                   the current UTC timestamp.
2562       * }
2563       * @param bool     $update   Whether the user is being updated rather than created.
2564       * @param int|null $user_id  ID of the user to be updated, or NULL if the user is being created.
2565       * @param array    $userdata The raw array of data passed to wp_insert_user().
2566       */
2567      $data = apply_filters( 'wp_pre_insert_user_data', $data, $update, ( $update ? $user_id : null ), $userdata );
2568  
2569      if ( empty( $data ) || ! is_array( $data ) ) {
2570          return new WP_Error( 'empty_data', __( 'Not enough data to create this user.' ) );
2571      }
2572  
2573      if ( $update ) {
2574          if ( $user_email !== $old_user_data->user_email || $user_pass !== $old_user_data->user_pass ) {
2575              $data['user_activation_key'] = '';
2576          }
2577          $wpdb->update( $wpdb->users, $data, array( 'ID' => $user_id ) );
2578      } else {
2579          $wpdb->insert( $wpdb->users, $data );
2580          $user_id = (int) $wpdb->insert_id;
2581      }
2582  
2583      $user = new WP_User( $user_id );
2584  
2585      if ( ! $update ) {
2586          /** This action is documented in wp-includes/pluggable.php */
2587          do_action( 'wp_set_password', $userdata['user_pass'], $user_id, $user );
2588      }
2589  
2590      /**
2591       * Filters a user's meta values and keys immediately after the user is created or updated
2592       * and before any user meta is inserted or updated.
2593       *
2594       * Does not include contact methods. These are added using `wp_get_user_contact_methods( $user )`.
2595       *
2596       * For custom meta fields, see the {@see 'insert_custom_user_meta'} filter.
2597       *
2598       * @since 4.4.0
2599       * @since 5.8.0 The `$userdata` parameter was added.
2600       *
2601       * @param array   $meta {
2602       *     Default meta values and keys for the user.
2603       *
2604       *     @type string   $nickname             The user's nickname. Default is the user's username.
2605       *     @type string   $first_name           The user's first name.
2606       *     @type string   $last_name            The user's last name.
2607       *     @type string   $description          The user's description.
2608       *     @type string   $rich_editing         Whether to enable the rich-editor for the user. Default 'true'.
2609       *     @type string   $syntax_highlighting  Whether to enable the rich code editor for the user. Default 'true'.
2610       *     @type string   $comment_shortcuts    Whether to enable keyboard shortcuts for the user. Default 'false'.
2611       *     @type string   $admin_color          The color scheme for a user's admin screen. Default 'modern'.
2612       *     @type int|bool $use_ssl              Whether to force SSL on the user's admin area. 0|false if SSL
2613       *                                          is not forced.
2614       *     @type string   $show_admin_bar_front Whether to show the admin bar on the front end for the user.
2615       *                                          Default 'true'.
2616       *     @type string   $locale               User's locale. Default empty.
2617       * }
2618       * @param WP_User $user     User object.
2619       * @param bool    $update   Whether the user is being updated rather than created.
2620       * @param array   $userdata The raw array of data passed to wp_insert_user().
2621       */
2622      $meta = apply_filters( 'insert_user_meta', $meta, $user, $update, $userdata );
2623  
2624      $custom_meta = array();
2625      if ( array_key_exists( 'meta_input', $userdata ) && is_array( $userdata['meta_input'] ) && ! empty( $userdata['meta_input'] ) ) {
2626          $custom_meta = $userdata['meta_input'];
2627      }
2628  
2629      /**
2630       * Filters a user's custom meta values and keys immediately after the user is created or updated
2631       * and before any user meta is inserted or updated.
2632       *
2633       * For non-custom meta fields, see the {@see 'insert_user_meta'} filter.
2634       *
2635       * @since 5.9.0
2636       *
2637       * @param array   $custom_meta Array of custom user meta values keyed by meta key.
2638       * @param WP_User $user        User object.
2639       * @param bool    $update      Whether the user is being updated rather than created.
2640       * @param array   $userdata    The raw array of data passed to wp_insert_user().
2641       */
2642      $custom_meta = apply_filters( 'insert_custom_user_meta', $custom_meta, $user, $update, $userdata );
2643  
2644      $meta = array_merge( $meta, $custom_meta );
2645  
2646      if ( $update ) {
2647          // Update user meta.
2648          foreach ( $meta as $key => $value ) {
2649              update_user_meta( $user_id, $key, $value );
2650          }
2651      } else {
2652          // Add user meta.
2653          foreach ( $meta as $key => $value ) {
2654              add_user_meta( $user_id, $key, $value );
2655          }
2656      }
2657  
2658      foreach ( wp_get_user_contact_methods( $user ) as $key => $value ) {
2659          if ( isset( $userdata[ $key ] ) ) {
2660              update_user_meta( $user_id, $key, $userdata[ $key ] );
2661          }
2662      }
2663  
2664      if ( isset( $userdata['role'] ) ) {
2665          $user->set_role( $userdata['role'] );
2666      } elseif ( ! $update ) {
2667          $user->set_role( get_option( 'default_role' ) );
2668      }
2669  
2670      clean_user_cache( $user_id );
2671  
2672      if ( $update ) {
2673          /**
2674           * Fires immediately after an existing user is updated.
2675           *
2676           * @since 2.0.0
2677           * @since 5.8.0 The `$userdata` parameter was added.
2678           *
2679           * @param int     $user_id       User ID.
2680           * @param WP_User $old_user_data Object containing user's data prior to update.
2681           * @param array   $userdata      The raw array of data passed to wp_insert_user().
2682           */
2683          do_action( 'profile_update', $user_id, $old_user_data, $userdata );
2684  
2685          if ( isset( $userdata['spam'] ) && $userdata['spam'] !== $old_user_data->spam ) {
2686              if ( '1' === $userdata['spam'] ) {
2687                  /**
2688                   * Fires after the user is marked as a SPAM user.
2689                   *
2690                   * @since 3.0.0
2691                   *
2692                   * @param int $user_id ID of the user marked as SPAM.
2693                   */
2694                  do_action( 'make_spam_user', $user_id );
2695              } else {
2696                  /**
2697                   * Fires after the user is marked as a HAM user. Opposite of SPAM.
2698                   *
2699                   * @since 3.0.0
2700                   *
2701                   * @param int $user_id ID of the user marked as HAM.
2702                   */
2703                  do_action( 'make_ham_user', $user_id );
2704              }
2705          }
2706      } else {
2707          /**
2708           * Fires immediately after a new user is registered.
2709           *
2710           * @since 1.5.0
2711           * @since 5.8.0 The `$userdata` parameter was added.
2712           *
2713           * @param int   $user_id  User ID.
2714           * @param array $userdata The raw array of data passed to wp_insert_user().
2715           */
2716          do_action( 'user_register', $user_id, $userdata );
2717      }
2718  
2719      return $user_id;
2720  }
2721  
2722  /**
2723   * Updates a user in the database.
2724   *
2725   * It is possible to update a user's password by specifying the 'user_pass'
2726   * value in the $userdata parameter array.
2727   *
2728   * If current user's password is being updated, then the cookies will be
2729   * cleared.
2730   *
2731   * @since 2.0.0
2732   *
2733   * @see wp_insert_user() For what fields can be set in $userdata.
2734   *
2735   * @param array|object|WP_User $userdata An array of user data or a user object of type stdClass or WP_User.
2736   * @return int|WP_Error The updated user's ID or a WP_Error object if the user could not be updated.
2737   */
2738  function wp_update_user( $userdata ) {
2739      if ( $userdata instanceof stdClass ) {
2740          $userdata = get_object_vars( $userdata );
2741      } elseif ( $userdata instanceof WP_User ) {
2742          $userdata = $userdata->to_array();
2743      }
2744  
2745      $userdata_raw = $userdata;
2746  
2747      $user_id = (int) ( $userdata['ID'] ?? 0 );
2748      if ( ! $user_id ) {
2749          return new WP_Error( 'invalid_user_id', __( 'Invalid user ID.' ) );
2750      }
2751  
2752      // First, get all of the original fields.
2753      $user_obj = get_userdata( $user_id );
2754      if ( ! $user_obj ) {
2755          return new WP_Error( 'invalid_user_id', __( 'Invalid user ID.' ) );
2756      }
2757  
2758      $user = $user_obj->to_array();
2759  
2760      // Add additional custom fields.
2761      foreach ( _get_additional_user_keys( $user_obj ) as $key ) {
2762          $user[ $key ] = get_user_meta( $user_id, $key, true );
2763      }
2764  
2765      // Escape data pulled from DB.
2766      $user = add_magic_quotes( $user );
2767  
2768      if ( ! empty( $userdata['user_pass'] ) && $userdata['user_pass'] !== $user_obj->user_pass ) {
2769          // If password is changing, hash it now.
2770          $plaintext_pass        = $userdata['user_pass'];
2771          $userdata['user_pass'] = wp_hash_password( $userdata['user_pass'] );
2772  
2773          /** This action is documented in wp-includes/pluggable.php */
2774          do_action( 'wp_set_password', $plaintext_pass, $user_id, $user_obj );
2775  
2776          /**
2777           * Filters whether to send the password change email.
2778           *
2779           * @since 4.3.0
2780           *
2781           * @see wp_insert_user() For `$user` and `$userdata` fields.
2782           *
2783           * @param bool  $send     Whether to send the email.
2784           * @param array $user     The original user array.
2785           * @param array $userdata The updated user array.
2786           */
2787          $send_password_change_email = apply_filters( 'send_password_change_email', true, $user, $userdata );
2788      }
2789  
2790      if ( isset( $userdata['user_email'] ) && $user['user_email'] !== $userdata['user_email'] ) {
2791          /**
2792           * Filters whether to send the email change email.
2793           *
2794           * @since 4.3.0
2795           *
2796           * @see wp_insert_user() For `$user` and `$userdata` fields.
2797           *
2798           * @param bool  $send     Whether to send the email.
2799           * @param array $user     The original user array.
2800           * @param array $userdata The updated user array.
2801           */
2802          $send_email_change_email = apply_filters( 'send_email_change_email', true, $user, $userdata );
2803      }
2804  
2805      clean_user_cache( $user_obj );
2806  
2807      // Merge old and new fields with new fields overwriting old ones.
2808      $userdata = array_merge( $user, $userdata );
2809      $user_id  = wp_insert_user( $userdata );
2810  
2811      if ( is_wp_error( $user_id ) ) {
2812          return $user_id;
2813      }
2814  
2815      $blog_name = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
2816  
2817      $switched_locale = false;
2818      if ( ! empty( $send_password_change_email ) || ! empty( $send_email_change_email ) ) {
2819          $switched_locale = switch_to_user_locale( $user_id );
2820      }
2821  
2822      if ( ! empty( $send_password_change_email ) ) {
2823          /* translators: Do not translate USERNAME, ADMIN_EMAIL, EMAIL, SITENAME, SITEURL: those are placeholders. */
2824          $pass_change_text = __(
2825              'Hi ###USERNAME###,
2826  
2827  This notice confirms that your password was changed on ###SITENAME###.
2828  
2829  If you did not change your password, please contact the Site Administrator at
2830  ###ADMIN_EMAIL###
2831  
2832  This email has been sent to ###EMAIL###
2833  
2834  Regards,
2835  All at ###SITENAME###
2836  ###SITEURL###'
2837          );
2838  
2839          $pass_change_email = array(
2840              'to'      => $user['user_email'],
2841              /* translators: Password change notification email subject. %s: Site title. */
2842              'subject' => __( '[%s] Password Changed' ),
2843              'message' => $pass_change_text,
2844              'headers' => '',
2845          );
2846  
2847          /**
2848           * Filters the contents of the email sent when the user's password is changed.
2849           *
2850           * @since 4.3.0
2851           *
2852           * @param array $pass_change_email {
2853           *     Used to build wp_mail().
2854           *
2855           *     @type string $to      The intended recipients. Add emails in a comma separated string.
2856           *     @type string $subject The subject of the email.
2857           *     @type string $message The content of the email.
2858           *         The following strings have a special meaning and will get replaced dynamically:
2859           *          - `###USERNAME###`    The current user's username.
2860           *          - `###ADMIN_EMAIL###` The admin email in case this was unexpected.
2861           *          - `###EMAIL###`       The user's email address.
2862           *          - `###SITENAME###`    The name of the site.
2863           *          - `###SITEURL###`     The URL to the site.
2864           *     @type string $headers Headers. Add headers in a newline (\r\n) separated string.
2865           * }
2866           * @param array $user     The original user array.
2867           * @param array $userdata The updated user array.
2868           */
2869          $pass_change_email = apply_filters( 'password_change_email', $pass_change_email, $user, $userdata );
2870  
2871          $pass_change_email['message'] = str_replace( '###USERNAME###', $user['user_login'], $pass_change_email['message'] );
2872          $pass_change_email['message'] = str_replace( '###ADMIN_EMAIL###', get_option( 'admin_email' ), $pass_change_email['message'] );
2873          $pass_change_email['message'] = str_replace( '###EMAIL###', $user['user_email'], $pass_change_email['message'] );
2874          $pass_change_email['message'] = str_replace( '###SITENAME###', $blog_name, $pass_change_email['message'] );
2875          $pass_change_email['message'] = str_replace( '###SITEURL###', home_url(), $pass_change_email['message'] );
2876  
2877          wp_mail( $pass_change_email['to'], sprintf( $pass_change_email['subject'], $blog_name ), $pass_change_email['message'], $pass_change_email['headers'] );
2878      }
2879  
2880      if ( ! empty( $send_email_change_email ) ) {
2881          /* translators: Do not translate USERNAME, ADMIN_EMAIL, NEW_EMAIL, EMAIL, SITENAME, SITEURL: those are placeholders. */
2882          $email_change_text = __(
2883              'Hi ###USERNAME###,
2884  
2885  This notice confirms that your email address on ###SITENAME### was changed to ###NEW_EMAIL###.
2886  
2887  If you did not change your email, please contact the Site Administrator at
2888  ###ADMIN_EMAIL###
2889  
2890  This email has been sent to ###EMAIL###
2891  
2892  Regards,
2893  All at ###SITENAME###
2894  ###SITEURL###'
2895          );
2896  
2897          $email_change_email = array(
2898              'to'      => $user['user_email'],
2899              /* translators: Email change notification email subject. %s: Site title. */
2900              'subject' => __( '[%s] Email Changed' ),
2901              'message' => $email_change_text,
2902              'headers' => '',
2903          );
2904  
2905          /**
2906           * Filters the contents of the email sent when the user's email is changed.
2907           *
2908           * @since 4.3.0
2909           *
2910           * @param array $email_change_email {
2911           *     Used to build wp_mail().
2912           *
2913           *     @type string $to      The intended recipients.
2914           *     @type string $subject The subject of the email.
2915           *     @type string $message The content of the email.
2916           *         The following strings have a special meaning and will get replaced dynamically:
2917           *          - `###USERNAME###`    The current user's username.
2918           *          - `###ADMIN_EMAIL###` The admin email in case this was unexpected.
2919           *          - `###NEW_EMAIL###`   The new email address.
2920           *          - `###EMAIL###`       The old email address.
2921           *          - `###SITENAME###`    The name of the site.
2922           *          - `###SITEURL###`     The URL to the site.
2923           *     @type string $headers Headers.
2924           * }
2925           * @param array $user     The original user array.
2926           * @param array $userdata The updated user array.
2927           */
2928          $email_change_email = apply_filters( 'email_change_email', $email_change_email, $user, $userdata );
2929  
2930          $email_change_email['message'] = str_replace( '###USERNAME###', $user['user_login'], $email_change_email['message'] );
2931          $email_change_email['message'] = str_replace( '###ADMIN_EMAIL###', get_option( 'admin_email' ), $email_change_email['message'] );
2932          $email_change_email['message'] = str_replace( '###NEW_EMAIL###', $userdata['user_email'], $email_change_email['message'] );
2933          $email_change_email['message'] = str_replace( '###EMAIL###', $user['user_email'], $email_change_email['message'] );
2934          $email_change_email['message'] = str_replace( '###SITENAME###', $blog_name, $email_change_email['message'] );
2935          $email_change_email['message'] = str_replace( '###SITEURL###', home_url(), $email_change_email['message'] );
2936  
2937          wp_mail( $email_change_email['to'], sprintf( $email_change_email['subject'], $blog_name ), $email_change_email['message'], $email_change_email['headers'] );
2938      }
2939  
2940      if ( $switched_locale ) {
2941          restore_previous_locale();
2942      }
2943  
2944      // Update the cookies if the password changed.
2945      $current_user = wp_get_current_user();
2946      if ( $current_user->ID === $user_id ) {
2947          if ( isset( $plaintext_pass ) ) {
2948              /*
2949               * Here we calculate the expiration length of the current auth cookie and compare it to the default expiration.
2950               * If it's greater than this, then we know the user checked 'Remember Me' when they logged in.
2951               */
2952              $logged_in_cookie = wp_parse_auth_cookie( '', 'logged_in' );
2953              /** This filter is documented in wp-includes/pluggable.php */
2954              $default_cookie_life = apply_filters( 'auth_cookie_expiration', ( 2 * DAY_IN_SECONDS ), $user_id, false );
2955  
2956              wp_clear_auth_cookie();
2957  
2958              $remember = false;
2959              $token    = '';
2960  
2961              if ( false !== $logged_in_cookie ) {
2962                  $token = $logged_in_cookie['token'];
2963              }
2964  
2965              if ( false !== $logged_in_cookie && ( (int) $logged_in_cookie['expiration'] - time() ) > $default_cookie_life ) {
2966                  $remember = true;
2967              }
2968  
2969              wp_set_auth_cookie( $user_id, $remember, '', $token );
2970          }
2971      }
2972  
2973      /**
2974       * Fires after the user has been updated and emails have been sent.
2975       *
2976       * @since 6.3.0
2977       *
2978       * @param int   $user_id      The ID of the user that was just updated.
2979       * @param array $userdata     The array of user data that was updated.
2980       * @param array $userdata_raw The unedited array of user data that was updated.
2981       */
2982      do_action( 'wp_update_user', $user_id, $userdata, $userdata_raw );
2983  
2984      return $user_id;
2985  }
2986  
2987  /**
2988   * Provides a simpler way of inserting a user into the database.
2989   *
2990   * Creates a new user with just the username, password, and email. For more
2991   * complex user creation use wp_insert_user() to specify more information.
2992   *
2993   * @since 2.0.0
2994   *
2995   * @see wp_insert_user() More complete way to create a new user.
2996   *
2997   * @param string $username The user's username.
2998   * @param string $password The user's password.
2999   * @param string $email    Optional. The user's email. Default empty.
3000   * @return int|WP_Error The newly created user's ID or a WP_Error object if the user could not
3001   *                      be created.
3002   */
3003  function wp_create_user(
3004      $username,
3005      #[\SensitiveParameter]
3006      $password,
3007      $email = ''
3008  ) {
3009      $user_login = wp_slash( $username );
3010      $user_email = wp_slash( $email );
3011      $user_pass  = $password;
3012  
3013      $userdata = compact( 'user_login', 'user_email', 'user_pass' );
3014      return wp_insert_user( $userdata );
3015  }
3016  
3017  /**
3018   * Returns a list of meta keys to be (maybe) populated in wp_update_user().
3019   *
3020   * The list of keys returned via this function are dependent on the presence
3021   * of those keys in the user meta data to be set.
3022   *
3023   * @since 3.3.0
3024   * @access private
3025   *
3026   * @param WP_User $user WP_User instance.
3027   * @return string[] List of user keys to be populated in wp_update_user().
3028   */
3029  function _get_additional_user_keys( $user ) {
3030      $keys = array( 'first_name', 'last_name', 'nickname', 'description', 'rich_editing', 'syntax_highlighting', 'infinite_scrolling', 'comment_shortcuts', 'admin_color', 'use_ssl', 'show_admin_bar_front', 'locale' );
3031      return array_merge( $keys, array_keys( wp_get_user_contact_methods( $user ) ) );
3032  }
3033  
3034  /**
3035   * Sets up the user contact methods.
3036   *
3037   * Default contact methods were removed for new installations in WordPress 3.6
3038   * and completely removed from the codebase in WordPress 6.9.
3039   *
3040   * Use the {@see 'user_contactmethods'} filter to add or remove contact methods.
3041   *
3042   * @since 3.7.0
3043   * @since 6.9.0 Removed references to `aim`, `jabber`, and `yim` contact methods.
3044   *
3045   * @param WP_User|null $user Optional. WP_User object.
3046   * @return string[] Array of contact method labels keyed by contact method.
3047   */
3048  function wp_get_user_contact_methods( $user = null ) {
3049      $methods = array();
3050  
3051      /**
3052       * Filters the user contact methods.
3053       *
3054       * @since 2.9.0
3055       *
3056       * @param string[]     $methods Array of contact method labels keyed by contact method.
3057       * @param WP_User|null $user    WP_User object or null if none was provided.
3058       */
3059      return apply_filters( 'user_contactmethods', $methods, $user );
3060  }
3061  
3062  /**
3063   * The old private function for setting up user contact methods.
3064   *
3065   * Use wp_get_user_contact_methods() instead.
3066   *
3067   * @since 2.9.0
3068   * @access private
3069   *
3070   * @param WP_User|null $user Optional. WP_User object. Default null.
3071   * @return string[] Array of contact method labels keyed by contact method.
3072   */
3073  function _wp_get_user_contactmethods( $user = null ) {
3074      return wp_get_user_contact_methods( $user );
3075  }
3076  
3077  /**
3078   * Gets the text suggesting how to create strong passwords.
3079   *
3080   * @since 4.1.0
3081   *
3082   * @return string The password hint text.
3083   */
3084  function wp_get_password_hint() {
3085      $hint = __( 'Hint: The password should be at least twelve characters long. To make it stronger, use upper and lower case letters, numbers, and symbols like ! " ? $ % ^ &amp; ).' );
3086  
3087      /**
3088       * Filters the text describing the site's password complexity policy.
3089       *
3090       * @since 4.1.0
3091       *
3092       * @param string $hint The password hint text.
3093       */
3094      return apply_filters( 'password_hint', $hint );
3095  }
3096  
3097  /**
3098   * Creates, stores, then returns a password reset key for user.
3099   *
3100   * @since 4.4.0
3101   *
3102   * @param WP_User $user User to retrieve password reset key for.
3103   * @return string|WP_Error Password reset key on success. WP_Error on error.
3104   */
3105  function get_password_reset_key( $user ) {
3106      if ( ! ( $user instanceof WP_User ) ) {
3107          return new WP_Error( 'invalidcombo', __( '<strong>Error:</strong> There is no account with that username or email address.' ) );
3108      }
3109  
3110      /**
3111       * Fires before a new password is retrieved.
3112       *
3113       * Use the {@see 'retrieve_password'} hook instead.
3114       *
3115       * @since 1.5.0
3116       * @deprecated 1.5.1 Misspelled. Use {@see 'retrieve_password'} hook instead.
3117       *
3118       * @param string $user_login The user login name.
3119       */
3120      do_action_deprecated( 'retreive_password', array( $user->user_login ), '1.5.1', 'retrieve_password' );
3121  
3122      /**
3123       * Fires before a new password is retrieved.
3124       *
3125       * @since 1.5.1
3126       *
3127       * @param string $user_login The user login name.
3128       */
3129      do_action( 'retrieve_password', $user->user_login );
3130  
3131      $password_reset_allowed = wp_is_password_reset_allowed_for_user( $user );
3132      if ( ! $password_reset_allowed ) {
3133          return new WP_Error( 'no_password_reset', __( 'Password reset is not allowed for this user' ) );
3134      } elseif ( is_wp_error( $password_reset_allowed ) ) {
3135          return $password_reset_allowed;
3136      }
3137  
3138      // Generate something random for a password reset key.
3139      $key = wp_generate_password( 20, false );
3140  
3141      /**
3142       * Fires when a password reset key is generated.
3143       *
3144       * @since 2.5.0
3145       *
3146       * @param string $user_login The username for the user.
3147       * @param string $key        The generated password reset key.
3148       */
3149      do_action( 'retrieve_password_key', $user->user_login, $key );
3150  
3151      $hashed = time() . ':' . wp_fast_hash( $key );
3152  
3153      $key_saved = wp_update_user(
3154          array(
3155              'ID'                  => $user->ID,
3156              'user_activation_key' => $hashed,
3157          )
3158      );
3159  
3160      if ( is_wp_error( $key_saved ) ) {
3161          return $key_saved;
3162      }
3163  
3164      return $key;
3165  }
3166  
3167  /**
3168   * Retrieves a user row based on password reset key and login.
3169   *
3170   * A key is considered 'expired' if it exactly matches the value of the
3171   * user_activation_key field, rather than being matched after going through the
3172   * hashing process. This field is now hashed; old values are no longer accepted
3173   * but have a different WP_Error code so good user feedback can be provided.
3174   *
3175   * @since 3.1.0
3176   *
3177   * @param string $key       The password reset key.
3178   * @param string $login     The user login.
3179   * @return WP_User|WP_Error WP_User object on success, WP_Error object for invalid or expired keys.
3180   */
3181  function check_password_reset_key(
3182      #[\SensitiveParameter]
3183      $key,
3184      $login
3185  ) {
3186      $key = preg_replace( '/[^a-z0-9]/i', '', $key );
3187  
3188      if ( empty( $key ) || ! is_string( $key ) ) {
3189          return new WP_Error( 'invalid_key', __( 'Invalid key.' ) );
3190      }
3191  
3192      if ( empty( $login ) || ! is_string( $login ) ) {
3193          return new WP_Error( 'invalid_key', __( 'Invalid key.' ) );
3194      }
3195  
3196      $user = get_user_by( 'login', $login );
3197  
3198      if ( ! $user ) {
3199          return new WP_Error( 'invalid_key', __( 'Invalid key.' ) );
3200      }
3201  
3202      /**
3203       * Filters the expiration time of password reset keys.
3204       *
3205       * @since 4.3.0
3206       *
3207       * @param int $expiration The expiration time in seconds.
3208       */
3209      $expiration_duration = apply_filters( 'password_reset_expiration', DAY_IN_SECONDS );
3210  
3211      if ( str_contains( $user->user_activation_key, ':' ) ) {
3212          list( $pass_request_time, $pass_key ) = explode( ':', $user->user_activation_key, 2 );
3213          $expiration_time                      = $pass_request_time + $expiration_duration;
3214      } else {
3215          $pass_key        = $user->user_activation_key;
3216          $expiration_time = false;
3217      }
3218  
3219      if ( ! $pass_key ) {
3220          return new WP_Error( 'invalid_key', __( 'Invalid key.' ) );
3221      }
3222  
3223      $hash_is_correct = wp_verify_fast_hash( $key, $pass_key );
3224  
3225      if ( $hash_is_correct && $expiration_time && time() < $expiration_time ) {
3226          return $user;
3227      } elseif ( $hash_is_correct && $expiration_time ) {
3228          // Key has an expiration time that's passed.
3229          return new WP_Error( 'expired_key', __( 'Invalid key.' ) );
3230      }
3231  
3232      if ( hash_equals( $user->user_activation_key, $key ) || ( $hash_is_correct && ! $expiration_time ) ) {
3233          $return  = new WP_Error( 'expired_key', __( 'Invalid key.' ) );
3234          $user_id = $user->ID;
3235  
3236          /**
3237           * Filters the return value of check_password_reset_key() when an
3238           * old-style key or an expired key is used.
3239           *
3240           * Prior to 3.7, plain-text keys were stored in the database.
3241           *
3242           * @since 3.7.0
3243           * @since 4.3.0 Previously key hashes were stored without an expiration time.
3244           *
3245           * @param WP_Error $return  A WP_Error object denoting an expired key.
3246           *                          Return a WP_User object to validate the key.
3247           * @param int      $user_id The matched user ID.
3248           */
3249          return apply_filters( 'password_reset_key_expired', $return, $user_id );
3250      }
3251  
3252      return new WP_Error( 'invalid_key', __( 'Invalid key.' ) );
3253  }
3254  
3255  /**
3256   * Handles sending a password retrieval email to a user.
3257   *
3258   * @since 2.5.0
3259   * @since 5.7.0 Added `$user_login` parameter.
3260   *
3261   * @global wpdb $wpdb WordPress database abstraction object.
3262   *
3263   * @param string $user_login Optional. Username to send a password retrieval email for.
3264   *                           Defaults to `$_POST['user_login']` if not set.
3265   * @return true|WP_Error True when finished, WP_Error object on error.
3266   */
3267  function retrieve_password( $user_login = '' ) {
3268      $errors    = new WP_Error();
3269      $user_data = false;
3270  
3271      // Use the passed $user_login if available, otherwise use $_POST['user_login'].
3272      if ( ! $user_login && ! empty( $_POST['user_login'] ) && is_string( $_POST['user_login'] ) ) {
3273          $user_login = $_POST['user_login'];
3274      }
3275  
3276      $user_login = trim( wp_unslash( $user_login ) );
3277  
3278      if ( empty( $user_login ) ) {
3279          $errors->add( 'empty_username', __( '<strong>Error:</strong> Please enter a username or email address.' ) );
3280      } elseif ( strpos( $user_login, '@' ) ) {
3281          $user_data = get_user_by( 'email', $user_login );
3282  
3283          if ( empty( $user_data ) ) {
3284              $user_data = get_user_by( 'login', $user_login );
3285          }
3286  
3287          if ( empty( $user_data ) ) {
3288              $errors->add( 'invalid_email', __( '<strong>Error:</strong> There is no account with that username or email address.' ) );
3289          }
3290      } else {
3291          $user_data = get_user_by( 'login', $user_login );
3292      }
3293  
3294      /**
3295       * Filters the user data during a password reset request.
3296       *
3297       * Allows, for example, custom validation using data other than username or email address.
3298       *
3299       * @since 5.7.0
3300       *
3301       * @param WP_User|false $user_data WP_User object if found, false if the user does not exist.
3302       * @param WP_Error      $errors    A WP_Error object containing any errors generated
3303       *                                 by using invalid credentials.
3304       */
3305      $user_data = apply_filters( 'lostpassword_user_data', $user_data, $errors );
3306  
3307      /**
3308       * Fires before errors are returned from a password reset request.
3309       *
3310       * @since 2.1.0
3311       * @since 4.4.0 Added the `$errors` parameter.
3312       * @since 5.4.0 Added the `$user_data` parameter.
3313       *
3314       * @param WP_Error      $errors    A WP_Error object containing any errors generated
3315       *                                 by using invalid credentials.
3316       * @param WP_User|false $user_data WP_User object if found, false if the user does not exist.
3317       */
3318      do_action( 'lostpassword_post', $errors, $user_data );
3319  
3320      /**
3321       * Filters the errors encountered on a password reset request.
3322       *
3323       * The filtered WP_Error object may, for example, contain errors for an invalid
3324       * username or email address. A WP_Error object should always be returned,
3325       * but may or may not contain errors.
3326       *
3327       * If any errors are present in $errors, this will abort the password reset request.
3328       *
3329       * @since 5.5.0
3330       *
3331       * @param WP_Error      $errors    A WP_Error object containing any errors generated
3332       *                                 by using invalid credentials.
3333       * @param WP_User|false $user_data WP_User object if found, false if the user does not exist.
3334       */
3335      $errors = apply_filters( 'lostpassword_errors', $errors, $user_data );
3336  
3337      if ( $errors->has_errors() ) {
3338          return $errors;
3339      }
3340  
3341      if ( ! $user_data ) {
3342          $errors->add( 'invalidcombo', __( '<strong>Error:</strong> There is no account with that username or email address.' ) );
3343          return $errors;
3344      }
3345  
3346      /**
3347       * Filters whether to send the retrieve password email.
3348       *
3349       * Return false to disable sending the email.
3350       *
3351       * @since 6.0.0
3352       *
3353       * @param bool    $send       Whether to send the email.
3354       * @param string  $user_login The username for the user.
3355       * @param WP_User $user_data  WP_User object.
3356       */
3357      if ( ! apply_filters( 'send_retrieve_password_email', true, $user_login, $user_data ) ) {
3358          return true;
3359      }
3360  
3361      // Redefining user_login ensures we return the right case in the email.
3362      $user_login = $user_data->user_login;
3363      $user_email = $user_data->user_email;
3364      $key        = get_password_reset_key( $user_data );
3365  
3366      if ( is_wp_error( $key ) ) {
3367          return $key;
3368      }
3369  
3370      // Localize password reset message content for user.
3371      $locale = get_user_locale( $user_data );
3372  
3373      $switched_locale = switch_to_user_locale( $user_data->ID );
3374  
3375      if ( is_multisite() ) {
3376          $site_name = get_network()->site_name;
3377      } else {
3378          /*
3379           * The blogname option is escaped with esc_html on the way into the database
3380           * in sanitize_option. We want to reverse this for the plain text arena of emails.
3381           */
3382          $site_name = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
3383      }
3384  
3385      $message = __( 'Someone has requested a password reset for the following account:' ) . "\r\n\r\n";
3386      /* translators: %s: Site name. */
3387      $message .= sprintf( __( 'Site Name: %s' ), $site_name ) . "\r\n\r\n";
3388      /* translators: %s: User login. */
3389      $message .= sprintf( __( 'Username: %s' ), $user_login ) . "\r\n\r\n";
3390      $message .= __( 'If this was a mistake, ignore this email and nothing will happen.' ) . "\r\n\r\n";
3391      $message .= __( 'To reset your password, visit the following address:' ) . "\r\n\r\n";
3392  
3393      /*
3394       * Since some user login names end in a period, this could produce ambiguous URLs that
3395       * end in a period. To avoid the ambiguity, ensure that the login is not the last query
3396       * arg in the URL. If moving it to the end, a trailing period will need to be escaped.
3397       *
3398       * @see https://core.trac.wordpress.org/tickets/42957
3399       */
3400      $message .= network_site_url( 'wp-login.php?login=' . rawurlencode( $user_login ) . "&key=$key&action=rp", 'login' ) . '&wp_lang=' . $locale . "\r\n\r\n";
3401  
3402      if ( ! is_user_logged_in() ) {
3403          $requester_ip = $_SERVER['REMOTE_ADDR'];
3404          if ( $requester_ip ) {
3405              $message .= sprintf(
3406                  /* translators: %s: IP address of password reset requester. */
3407                  __( 'This password reset request originated from the IP address %s.' ),
3408                  $requester_ip
3409              ) . "\r\n";
3410          }
3411      }
3412  
3413      /* translators: Password reset notification email subject. %s: Site title. */
3414      $title = sprintf( __( '[%s] Password Reset' ), $site_name );
3415  
3416      /**
3417       * Filters the subject of the password reset email.
3418       *
3419       * @since 2.8.0
3420       * @since 4.4.0 Added the `$user_login` and `$user_data` parameters.
3421       *
3422       * @param string  $title      Email subject.
3423       * @param string  $user_login The username for the user.
3424       * @param WP_User $user_data  WP_User object.
3425       */
3426      $title = apply_filters( 'retrieve_password_title', $title, $user_login, $user_data );
3427  
3428      /**
3429       * Filters the message body of the password reset mail.
3430       *
3431       * If the filtered message is empty, the password reset email will not be sent.
3432       *
3433       * @since 2.8.0
3434       * @since 4.1.0 Added `$user_login` and `$user_data` parameters.
3435       *
3436       * @param string  $message    Email message.
3437       * @param string  $key        The activation key.
3438       * @param string  $user_login The username for the user.
3439       * @param WP_User $user_data  WP_User object.
3440       */
3441      $message = apply_filters( 'retrieve_password_message', $message, $key, $user_login, $user_data );
3442  
3443      // Short-circuit on falsey $message value for backwards compatibility.
3444      if ( ! $message ) {
3445          return true;
3446      }
3447  
3448      /*
3449       * Wrap the single notification email arguments in an array
3450       * to pass them to the retrieve_password_notification_email filter.
3451       */
3452      $defaults = array(
3453          'to'      => $user_email,
3454          'subject' => $title,
3455          'message' => $message,
3456          'headers' => '',
3457      );
3458  
3459      /**
3460       * Filters the contents of the reset password notification email sent to the user.
3461       *
3462       * @since 6.0.0
3463       *
3464       * @param array   $defaults {
3465       *     The default notification email arguments. Used to build wp_mail().
3466       *
3467       *     @type string $to      The intended recipient - user email address.
3468       *     @type string $subject The subject of the email.
3469       *     @type string $message The body of the email.
3470       *     @type string $headers The headers of the email.
3471       * }
3472       * @param string  $key        The activation key.
3473       * @param string  $user_login The username for the user.
3474       * @param WP_User $user_data  WP_User object.
3475       */
3476      $notification_email = apply_filters( 'retrieve_password_notification_email', $defaults, $key, $user_login, $user_data );
3477  
3478      if ( $switched_locale ) {
3479          restore_previous_locale();
3480      }
3481  
3482      if ( is_array( $notification_email ) ) {
3483          // Force key order and merge defaults in case any value is missing in the filtered array.
3484          $notification_email = array_merge( $defaults, $notification_email );
3485      } else {
3486          $notification_email = $defaults;
3487      }
3488  
3489      list( $to, $subject, $message, $headers ) = array_values( $notification_email );
3490  
3491      $subject = wp_specialchars_decode( $subject );
3492  
3493      if ( ! wp_mail( $to, $subject, $message, $headers ) ) {
3494          $errors->add(
3495              'retrieve_password_email_failure',
3496              sprintf(
3497                  /* translators: %s: Documentation URL. */
3498                  __( '<strong>Error:</strong> The email could not be sent. Your site may not be correctly configured to send emails. <a href="%s">Get support for resetting your password</a>.' ),
3499                  esc_url( __( 'https://wordpress.org/documentation/article/reset-your-password/' ) )
3500              )
3501          );
3502          return $errors;
3503      }
3504  
3505      return true;
3506  }
3507  
3508  /**
3509   * Handles resetting the user's password.
3510   *
3511   * @since 2.5.0
3512   *
3513   * @param WP_User $user     The user
3514   * @param string  $new_pass New password for the user in plaintext
3515   */
3516  function reset_password(
3517      $user,
3518      #[\SensitiveParameter]
3519      $new_pass
3520  ) {
3521      /**
3522       * Fires before the user's password is reset.
3523       *
3524       * @since 1.5.0
3525       *
3526       * @param WP_User $user     The user.
3527       * @param string  $new_pass New user password.
3528       */
3529      do_action( 'password_reset', $user, $new_pass );
3530  
3531      wp_set_password( $new_pass, $user->ID );
3532      update_user_meta( $user->ID, 'default_password_nag', false );
3533  
3534      /**
3535       * Fires after the user's password is reset.
3536       *
3537       * @since 4.4.0
3538       *
3539       * @param WP_User $user     The user.
3540       * @param string  $new_pass New user password.
3541       */
3542      do_action( 'after_password_reset', $user, $new_pass );
3543  }
3544  
3545  /**
3546   * Handles registering a new user.
3547   *
3548   * @since 2.5.0
3549   *
3550   * @param string $user_login User's username for logging in
3551   * @param string $user_email User's email address to send password and add
3552   * @return int|WP_Error Either user's ID or error on failure.
3553   */
3554  function register_new_user( $user_login, $user_email ) {
3555      $errors = new WP_Error();
3556  
3557      $sanitized_user_login = sanitize_user( $user_login );
3558      /**
3559       * Filters the email address of a user being registered.
3560       *
3561       * @since 2.1.0
3562       *
3563       * @param string $user_email The email address of the new user.
3564       */
3565      $user_email = apply_filters( 'user_registration_email', $user_email );
3566  
3567      // Check the username.
3568      if ( '' === $sanitized_user_login ) {
3569          $errors->add( 'empty_username', __( '<strong>Error:</strong> Please enter a username.' ) );
3570      } elseif ( ! validate_username( $user_login ) ) {
3571          $errors->add( 'invalid_username', __( '<strong>Error:</strong> This username is invalid because it uses illegal characters. Please enter a valid username.' ) );
3572          $sanitized_user_login = '';
3573      } elseif ( username_exists( $sanitized_user_login ) ) {
3574          $errors->add( 'username_exists', __( '<strong>Error:</strong> This username is already registered. Please choose another one.' ) );
3575      } else {
3576          /** This filter is documented in wp-includes/user.php */
3577          $illegal_user_logins = (array) apply_filters( 'illegal_user_logins', array() );
3578          if ( in_array( strtolower( $sanitized_user_login ), array_map( 'strtolower', $illegal_user_logins ), true ) ) {
3579              $errors->add( 'invalid_username', __( '<strong>Error:</strong> Sorry, that username is not allowed.' ) );
3580          }
3581      }
3582  
3583      // Check the email address.
3584      if ( '' === $user_email ) {
3585          $errors->add( 'empty_email', __( '<strong>Error:</strong> Please type your email address.' ) );
3586      } elseif ( ! is_email( $user_email ) ) {
3587          $errors->add( 'invalid_email', __( '<strong>Error:</strong> The email address is not correct.' ) );
3588          $user_email = '';
3589      } elseif ( email_exists( $user_email ) ) {
3590          $errors->add(
3591              'email_exists',
3592              sprintf(
3593                  /* translators: %s: Link to the login page. */
3594                  __( '<strong>Error:</strong> This email address is already registered. <a href="%s">Log in</a> with this address or choose another one.' ),
3595                  esc_url( wp_login_url() )
3596              )
3597          );
3598      }
3599  
3600      /**
3601       * Fires when submitting registration form data, before the user is created.
3602       *
3603       * @since 2.1.0
3604       *
3605       * @param string   $sanitized_user_login The submitted username after being sanitized.
3606       * @param string   $user_email           The submitted email.
3607       * @param WP_Error $errors               Contains any errors with submitted username and email,
3608       *                                       e.g., an empty field, an invalid username or email,
3609       *                                       or an existing username or email.
3610       */
3611      do_action( 'register_post', $sanitized_user_login, $user_email, $errors );
3612  
3613      /**
3614       * Filters the errors encountered when a new user is being registered.
3615       *
3616       * The filtered WP_Error object may, for example, contain errors for an invalid
3617       * or existing username or email address. A WP_Error object should always be returned,
3618       * but may or may not contain errors.
3619       *
3620       * If any errors are present in $errors, this will abort the user's registration.
3621       *
3622       * @since 2.1.0
3623       *
3624       * @param WP_Error $errors               A WP_Error object containing any errors encountered
3625       *                                       during registration.
3626       * @param string   $sanitized_user_login User's username after it has been sanitized.
3627       * @param string   $user_email           User's email.
3628       */
3629      $errors = apply_filters( 'registration_errors', $errors, $sanitized_user_login, $user_email );
3630  
3631      if ( $errors->has_errors() ) {
3632          return $errors;
3633      }
3634  
3635      $user_pass = wp_generate_password( 12, false );
3636      $user_id   = wp_create_user( $sanitized_user_login, $user_pass, $user_email );
3637      if ( ! $user_id || is_wp_error( $user_id ) ) {
3638          $errors->add(
3639              'registerfail',
3640              sprintf(
3641                  /* translators: %s: Admin email address. */
3642                  __( '<strong>Error:</strong> Could not register you&hellip; please contact the <a href="mailto:%s">site admin</a>!' ),
3643                  esc_attr( get_option( 'admin_email' ) )
3644              )
3645          );
3646          return $errors;
3647      }
3648  
3649      update_user_meta( $user_id, 'default_password_nag', true ); // Set up the password change nag.
3650  
3651      if ( ! empty( $_COOKIE['wp_lang'] ) ) {
3652          $wp_lang = sanitize_text_field( $_COOKIE['wp_lang'] );
3653          if ( in_array( $wp_lang, get_available_languages(), true ) ) {
3654              update_user_meta( $user_id, 'locale', $wp_lang ); // Set user locale if defined on registration.
3655          }
3656      }
3657  
3658      /**
3659       * Fires after a new user registration has been recorded.
3660       *
3661       * @since 4.4.0
3662       *
3663       * @param int $user_id ID of the newly registered user.
3664       */
3665      do_action( 'register_new_user', $user_id );
3666  
3667      return $user_id;
3668  }
3669  
3670  /**
3671   * Initiates email notifications related to the creation of new users.
3672   *
3673   * Notifications are sent both to the site admin and to the newly created user.
3674   *
3675   * @since 4.4.0
3676   * @since 4.6.0 Converted the `$notify` parameter to accept 'user' for sending
3677   *              notifications only to the user created.
3678   *
3679   * @param int    $user_id ID of the newly created user.
3680   * @param string $notify  Optional. Type of notification that should happen. Accepts 'admin'
3681   *                        or an empty string (admin only), 'user', or 'both' (admin and user).
3682   *                        Default 'both'.
3683   */
3684  function wp_send_new_user_notifications( $user_id, $notify = 'both' ) {
3685      wp_new_user_notification( $user_id, null, $notify );
3686  }
3687  
3688  /**
3689   * Retrieves the current session token from the logged_in cookie.
3690   *
3691   * @since 4.0.0
3692   *
3693   * @return string Token.
3694   */
3695  function wp_get_session_token() {
3696      $cookie = wp_parse_auth_cookie( '', 'logged_in' );
3697      return ! empty( $cookie['token'] ) ? $cookie['token'] : '';
3698  }
3699  
3700  /**
3701   * Retrieves a list of sessions for the current user.
3702   *
3703   * @since 4.0.0
3704   *
3705   * @return array Array of sessions.
3706   */
3707  function wp_get_all_sessions() {
3708      $manager = WP_Session_Tokens::get_instance( get_current_user_id() );
3709      return $manager->get_all();
3710  }
3711  
3712  /**
3713   * Removes the current session token from the database.
3714   *
3715   * @since 4.0.0
3716   */
3717  function wp_destroy_current_session() {
3718      $token = wp_get_session_token();
3719      if ( $token ) {
3720          $manager = WP_Session_Tokens::get_instance( get_current_user_id() );
3721          $manager->destroy( $token );
3722      }
3723  }
3724  
3725  /**
3726   * Removes all but the current session token for the current user for the database.
3727   *
3728   * @since 4.0.0
3729   */
3730  function wp_destroy_other_sessions() {
3731      $token = wp_get_session_token();
3732      if ( $token ) {
3733          $manager = WP_Session_Tokens::get_instance( get_current_user_id() );
3734          $manager->destroy_others( $token );
3735      }
3736  }
3737  
3738  /**
3739   * Removes all session tokens for the current user from the database.
3740   *
3741   * @since 4.0.0
3742   */
3743  function wp_destroy_all_sessions() {
3744      $manager = WP_Session_Tokens::get_instance( get_current_user_id() );
3745      $manager->destroy_all();
3746  }
3747  
3748  /**
3749   * Gets the user IDs of all users with no role on this site.
3750   *
3751   * @since 4.4.0
3752   * @since 4.9.0 The `$site_id` parameter was added to support multisite.
3753   *
3754   * @global wpdb $wpdb WordPress database abstraction object.
3755   *
3756   * @param int|null $site_id Optional. The site ID to get users with no role for. Defaults to the current site.
3757   * @return string[] Array of user IDs as strings.
3758   */
3759  function wp_get_users_with_no_role( $site_id = null ) {
3760      global $wpdb;
3761  
3762      if ( ! $site_id ) {
3763          $site_id = get_current_blog_id();
3764      }
3765  
3766      $prefix = $wpdb->get_blog_prefix( $site_id );
3767  
3768      if ( is_multisite() && get_current_blog_id() !== $site_id ) {
3769          switch_to_blog( $site_id );
3770          $role_names = wp_roles()->get_names();
3771          restore_current_blog();
3772      } else {
3773          $role_names = wp_roles()->get_names();
3774      }
3775  
3776      $regex = implode( '|', array_keys( $role_names ) );
3777      $regex = preg_replace( '/[^a-zA-Z_\|-]/', '', $regex );
3778      $users = $wpdb->get_col(
3779          $wpdb->prepare(
3780              "SELECT user_id
3781              FROM $wpdb->usermeta
3782              WHERE meta_key = '{$prefix}capabilities'
3783              AND meta_value NOT REGEXP %s",
3784              $regex
3785          )
3786      );
3787  
3788      return $users;
3789  }
3790  
3791  /**
3792   * Retrieves the current user object.
3793   *
3794   * Will set the current user, if the current user is not set. The current user
3795   * will be set to the logged-in person. If no user is logged-in, then it will
3796   * set the current user to 0, which is invalid and won't have any permissions.
3797   *
3798   * This function is used by the pluggable functions wp_get_current_user() and
3799   * get_currentuserinfo(), the latter of which is deprecated but used for backward
3800   * compatibility.
3801   *
3802   * @since 4.5.0
3803   * @access private
3804   *
3805   * @see wp_get_current_user()
3806   * @global WP_User $current_user Checks if the current user is set.
3807   *
3808   * @return WP_User Current WP_User instance.
3809   */
3810  function _wp_get_current_user() {
3811      global $current_user;
3812  
3813      if ( ! empty( $current_user ) ) {
3814          if ( $current_user instanceof WP_User ) {
3815              return $current_user;
3816          }
3817  
3818          // Upgrade stdClass to WP_User.
3819          if ( is_object( $current_user ) && isset( $current_user->ID ) ) {
3820              $cur_id       = $current_user->ID;
3821              $current_user = null;
3822              wp_set_current_user( $cur_id );
3823              return $current_user;
3824          }
3825  
3826          // $current_user has a junk value. Force to WP_User with ID 0.
3827          $current_user = null;
3828          wp_set_current_user( 0 );
3829          return $current_user;
3830      }
3831  
3832      if ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) {
3833          wp_set_current_user( 0 );
3834          return $current_user;
3835      }
3836  
3837      /**
3838       * Filters the current user.
3839       *
3840       * The default filters use this to determine the current user from the
3841       * request's cookies, if available.
3842       *
3843       * Returning a value of false will effectively short-circuit setting
3844       * the current user.
3845       *
3846       * @since 3.9.0
3847       *
3848       * @param int|false $user_id User ID if one has been determined, false otherwise.
3849       */
3850      $user_id = apply_filters( 'determine_current_user', false );
3851      if ( ! $user_id ) {
3852          wp_set_current_user( 0 );
3853          return $current_user;
3854      }
3855  
3856      wp_set_current_user( $user_id );
3857  
3858      return $current_user;
3859  }
3860  
3861  /**
3862   * Sends a confirmation request email when a change of user email address is attempted.
3863   *
3864   * @since 3.0.0
3865   * @since 4.9.0 This function was moved from wp-admin/includes/ms.php so it's no longer Multisite specific.
3866   * @since 7.0.3 Added the `$user_id` parameter, which is sent with the `personal_options_update` action.
3867   *
3868   * @global WP_Error $errors WP_Error object.
3869   *
3870   * @param int $user_id Optional. The ID of the user whose email is being changed. Defaults to `$_POST['user_id']` if set, otherwise 0.
3871   */
3872  function send_confirmation_on_profile_email( $user_id = 0 ) {
3873      global $errors;
3874  
3875      // Maintain backward compatibility for those relying on a check based on $_POST['user_id'].
3876      if ( ! $user_id && isset( $_POST['user_id'] ) ) {
3877          $user_id = absint( $_POST['user_id'] );
3878      }
3879  
3880      $current_user = wp_get_current_user();
3881      if ( ! is_object( $errors ) ) {
3882          $errors = new WP_Error();
3883      }
3884  
3885      if ( 0 === $current_user->ID || $current_user->ID !== (int) $user_id ) {
3886          return false;
3887      }
3888  
3889      if ( $current_user->user_email !== $_POST['email'] ) {
3890          if ( ! is_email( $_POST['email'] ) ) {
3891              $errors->add(
3892                  'user_email',
3893                  __( '<strong>Error:</strong> The email address is not correct.' ),
3894                  array(
3895                      'form-field' => 'email',
3896                  )
3897              );
3898  
3899              $_POST['email'] = addslashes( $current_user->user_email );
3900              return;
3901          }
3902  
3903          if ( email_exists( $_POST['email'] ) ) {
3904              $errors->add(
3905                  'user_email',
3906                  __( '<strong>Error:</strong> The email address is already used.' ),
3907                  array(
3908                      'form-field' => 'email',
3909                  )
3910              );
3911              delete_user_meta( $current_user->ID, '_new_email' );
3912  
3913              $_POST['email'] = addslashes( $current_user->user_email );
3914              return;
3915          }
3916  
3917          $hash           = md5( $_POST['email'] . time() . wp_rand() );
3918          $new_user_email = array(
3919              'hash'     => $hash,
3920              'newemail' => $_POST['email'],
3921          );
3922          update_user_meta( $current_user->ID, '_new_email', $new_user_email );
3923  
3924          $sitename = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
3925  
3926          /* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
3927          $email_text = __(
3928              'Howdy ###USERNAME###,
3929  
3930  You recently requested to have the email address on your account changed.
3931  
3932  If this is correct, please click on the following link to change it:
3933  ###ADMIN_URL###
3934  
3935  You can safely ignore and delete this email if you do not want to
3936  take this action.
3937  
3938  This email has been sent to ###EMAIL###
3939  
3940  Regards,
3941  All at ###SITENAME###
3942  ###SITEURL###'
3943          );
3944  
3945          /**
3946           * Filters the text of the email sent when a change of user email address is attempted.
3947           *
3948           * The following strings have a special meaning and will get replaced dynamically:
3949           *
3950           *  - `###USERNAME###`  The current user's username.
3951           *  - `###ADMIN_URL###` The link to click on to confirm the email change.
3952           *  - `###EMAIL###`     The new email.
3953           *  - `###SITENAME###`  The name of the site.
3954           *  - `###SITEURL###`   The URL to the site.
3955           *
3956           * @since MU (3.0.0)
3957           * @since 4.9.0 This filter is no longer Multisite specific.
3958           *
3959           * @param string $email_text     Text in the email.
3960           * @param array  $new_user_email {
3961           *     Data relating to the new user email address.
3962           *
3963           *     @type string $hash     The secure hash used in the confirmation link URL.
3964           *     @type string $newemail The proposed new email address.
3965           * }
3966           */
3967          $content = apply_filters( 'new_user_email_content', $email_text, $new_user_email );
3968  
3969          $content = str_replace( '###USERNAME###', $current_user->user_login, $content );
3970          $content = str_replace( '###ADMIN_URL###', esc_url( self_admin_url( 'profile.php?newuseremail=' . $hash ) ), $content );
3971          $content = str_replace( '###EMAIL###', $_POST['email'], $content );
3972          $content = str_replace( '###SITENAME###', $sitename, $content );
3973          $content = str_replace( '###SITEURL###', home_url(), $content );
3974  
3975          /* translators: New email address notification email subject. %s: Site title. */
3976          wp_mail( $_POST['email'], sprintf( __( '[%s] Email Change Request' ), $sitename ), $content );
3977  
3978          $_POST['email'] = $current_user->user_email;
3979      }
3980  }
3981  
3982  /**
3983   * Adds an admin notice alerting the user to check for confirmation request email
3984   * after email address change.
3985   *
3986   * @since 3.0.0
3987   * @since 4.9.0 This function was moved from wp-admin/includes/ms.php so it's no longer Multisite specific.
3988   *
3989   * @global string $pagenow The filename of the current screen.
3990   */
3991  function new_user_email_admin_notice() {
3992      global $pagenow;
3993  
3994      if ( 'profile.php' === $pagenow && isset( $_GET['updated'] ) ) {
3995          $email = get_user_meta( get_current_user_id(), '_new_email', true );
3996          if ( $email ) {
3997              $message = sprintf(
3998                  /* translators: %s: New email address. */
3999                  __( 'Your email address has not been updated yet. Please check your inbox at %s for a confirmation email.' ),
4000                  '<code>' . esc_html( $email['newemail'] ) . '</code>'
4001              );
4002              wp_admin_notice( $message, array( 'type' => 'info' ) );
4003          }
4004      }
4005  }
4006  
4007  /**
4008   * Gets all personal data request types.
4009   *
4010   * @since 4.9.6
4011   * @access private
4012   *
4013   * @return string[] List of core privacy action types.
4014   */
4015  function _wp_privacy_action_request_types() {
4016      return array(
4017          'export_personal_data',
4018          'remove_personal_data',
4019      );
4020  }
4021  
4022  /**
4023   * Registers the personal data exporter for users.
4024   *
4025   * @since 4.9.6
4026   *
4027   * @param array[] $exporters An array of personal data exporters.
4028   * @return array[] An array of personal data exporters.
4029   */
4030  function wp_register_user_personal_data_exporter( $exporters ) {
4031      $exporters['wordpress-user'] = array(
4032          'exporter_friendly_name' => __( 'WordPress User' ),
4033          'callback'               => 'wp_user_personal_data_exporter',
4034      );
4035  
4036      return $exporters;
4037  }
4038  
4039  /**
4040   * Finds and exports personal data associated with an email address from the user and user_meta table.
4041   *
4042   * @since 4.9.6
4043   * @since 5.4.0 Added 'Community Events Location' group to the export data.
4044   * @since 5.4.0 Added 'Session Tokens' group to the export data.
4045   *
4046   * @param string $email_address  The user's email address.
4047   * @return array {
4048   *     An array of personal data.
4049   *
4050   *     @type array[] $data An array of personal data arrays.
4051   *     @type bool    $done Whether the exporter is finished.
4052   * }
4053   */
4054  function wp_user_personal_data_exporter( $email_address ) {
4055      $email_address = trim( $email_address );
4056  
4057      $data_to_export = array();
4058  
4059      $user = get_user_by( 'email', $email_address );
4060  
4061      if ( ! $user ) {
4062          return array(
4063              'data' => array(),
4064              'done' => true,
4065          );
4066      }
4067  
4068      $user_meta = get_user_meta( $user->ID );
4069  
4070      $user_props_to_export = array(
4071          'ID'              => __( 'User ID' ),
4072          'user_login'      => __( 'User Login Name' ),
4073          'user_nicename'   => __( 'User Nice Name' ),
4074          'user_email'      => __( 'User Email' ),
4075          'user_url'        => __( 'User URL' ),
4076          'user_registered' => __( 'User Registration Date' ),
4077          'display_name'    => __( 'User Display Name' ),
4078          'nickname'        => __( 'User Nickname' ),
4079          'first_name'      => __( 'User First Name' ),
4080          'last_name'       => __( 'User Last Name' ),
4081          'description'     => __( 'User Description' ),
4082      );
4083  
4084      $user_data_to_export = array();
4085  
4086      foreach ( $user_props_to_export as $key => $name ) {
4087          $value = '';
4088  
4089          switch ( $key ) {
4090              case 'ID':
4091              case 'user_login':
4092              case 'user_nicename':
4093              case 'user_email':
4094              case 'user_url':
4095              case 'user_registered':
4096              case 'display_name':
4097                  $value = $user->data->$key;
4098                  break;
4099              case 'nickname':
4100              case 'first_name':
4101              case 'last_name':
4102              case 'description':
4103                  $value = $user_meta[ $key ][0];
4104                  break;
4105          }
4106  
4107          if ( ! empty( $value ) ) {
4108              $user_data_to_export[] = array(
4109                  'name'  => $name,
4110                  'value' => $value,
4111              );
4112          }
4113      }
4114  
4115      // Get the list of reserved names.
4116      $reserved_names = array_values( $user_props_to_export );
4117  
4118      /**
4119       * Filters the user's profile data for the privacy exporter.
4120       *
4121       * @since 5.4.0
4122       *
4123       * @param array    $additional_user_profile_data {
4124       *     An array of name-value pairs of additional user data items. Default empty array.
4125       *
4126       *     @type string $name  The user-facing name of an item name-value pair,e.g. 'IP Address'.
4127       *     @type string $value The user-facing value of an item data pair, e.g. '50.60.70.0'.
4128       * }
4129       * @param WP_User  $user           The user whose data is being exported.
4130       * @param string[] $reserved_names An array of reserved names. Any item in `$additional_user_data`
4131       *                                 that uses one of these for its `name` will not be included in the export.
4132       */
4133      $_extra_data = apply_filters( 'wp_privacy_additional_user_profile_data', array(), $user, $reserved_names );
4134  
4135      if ( is_array( $_extra_data ) && ! empty( $_extra_data ) ) {
4136          // Remove items that use reserved names.
4137          $extra_data = array_filter(
4138              $_extra_data,
4139              static function ( $item ) use ( $reserved_names ) {
4140                  return ! in_array( $item['name'], $reserved_names, true );
4141              }
4142          );
4143  
4144          if ( count( $extra_data ) !== count( $_extra_data ) ) {
4145              _doing_it_wrong(
4146                  __FUNCTION__,
4147                  sprintf(
4148                      /* translators: %s: wp_privacy_additional_user_profile_data */
4149                      __( 'Filter %s returned items with reserved names.' ),
4150                      '<code>wp_privacy_additional_user_profile_data</code>'
4151                  ),
4152                  '5.4.0'
4153              );
4154          }
4155  
4156          if ( ! empty( $extra_data ) ) {
4157              $user_data_to_export = array_merge( $user_data_to_export, $extra_data );
4158          }
4159      }
4160  
4161      $data_to_export[] = array(
4162          'group_id'          => 'user',
4163          'group_label'       => __( 'User' ),
4164          'group_description' => __( 'User&#8217;s profile data.' ),
4165          'item_id'           => "user-{$user->ID}",
4166          'data'              => $user_data_to_export,
4167      );
4168  
4169      if ( isset( $user_meta['community-events-location'] ) ) {
4170          $location = maybe_unserialize( $user_meta['community-events-location'][0] );
4171  
4172          $location_props_to_export = array(
4173              'description' => __( 'City' ),
4174              'country'     => __( 'Country' ),
4175              'latitude'    => __( 'Latitude' ),
4176              'longitude'   => __( 'Longitude' ),
4177              'ip'          => __( 'IP' ),
4178          );
4179  
4180          $location_data_to_export = array();
4181  
4182          foreach ( $location_props_to_export as $key => $name ) {
4183              if ( ! empty( $location[ $key ] ) ) {
4184                  $location_data_to_export[] = array(
4185                      'name'  => $name,
4186                      'value' => $location[ $key ],
4187                  );
4188              }
4189          }
4190  
4191          $data_to_export[] = array(
4192              'group_id'          => 'community-events-location',
4193              'group_label'       => __( 'Community Events Location' ),
4194              'group_description' => __( 'User&#8217;s location data used for the Community Events in the WordPress Events and News dashboard widget.' ),
4195              'item_id'           => "community-events-location-{$user->ID}",
4196              'data'              => $location_data_to_export,
4197          );
4198      }
4199  
4200      if ( isset( $user_meta['session_tokens'] ) ) {
4201          $session_tokens = maybe_unserialize( $user_meta['session_tokens'][0] );
4202  
4203          $session_tokens_props_to_export = array(
4204              'expiration' => __( 'Expiration' ),
4205              'ip'         => __( 'IP' ),
4206              'ua'         => __( 'User Agent' ),
4207              'login'      => __( 'Last Login' ),
4208          );
4209  
4210          foreach ( $session_tokens as $token_key => $session_token ) {
4211              $session_tokens_data_to_export = array();
4212  
4213              foreach ( $session_tokens_props_to_export as $key => $name ) {
4214                  if ( ! empty( $session_token[ $key ] ) ) {
4215                      $value = $session_token[ $key ];
4216                      if ( in_array( $key, array( 'expiration', 'login' ), true ) ) {
4217                          $value = date_i18n( 'F d, Y H:i A', $value );
4218                      }
4219                      $session_tokens_data_to_export[] = array(
4220                          'name'  => $name,
4221                          'value' => $value,
4222                      );
4223                  }
4224              }
4225  
4226              $data_to_export[] = array(
4227                  'group_id'          => 'session-tokens',
4228                  'group_label'       => __( 'Session Tokens' ),
4229                  'group_description' => __( 'User&#8217;s Session Tokens data.' ),
4230                  'item_id'           => "session-tokens-{$user->ID}-{$token_key}",
4231                  'data'              => $session_tokens_data_to_export,
4232              );
4233          }
4234      }
4235  
4236      return array(
4237          'data' => $data_to_export,
4238          'done' => true,
4239      );
4240  }
4241  
4242  /**
4243   * Updates log when privacy request is confirmed.
4244   *
4245   * @since 4.9.6
4246   * @access private
4247   *
4248   * @param int $request_id ID of the request.
4249   */
4250  function _wp_privacy_account_request_confirmed( $request_id ) {
4251      $request = wp_get_user_request( $request_id );
4252  
4253      if ( ! $request ) {
4254          return;
4255      }
4256  
4257      if ( ! in_array( $request->status, array( 'request-pending', 'request-failed' ), true ) ) {
4258          return;
4259      }
4260  
4261      update_post_meta( $request_id, '_wp_user_request_confirmed_timestamp', time() );
4262      wp_update_post(
4263          array(
4264              'ID'          => $request_id,
4265              'post_status' => 'request-confirmed',
4266          )
4267      );
4268  }
4269  
4270  /**
4271   * Notifies the site administrator via email when a request is confirmed.
4272   *
4273   * Without this, the admin would have to manually check the site to see if any
4274   * action was needed on their part yet.
4275   *
4276   * @since 4.9.6
4277   *
4278   * @param int $request_id The ID of the request.
4279   */
4280  function _wp_privacy_send_request_confirmation_notification( $request_id ) {
4281      $request = wp_get_user_request( $request_id );
4282  
4283      if ( ! ( $request instanceof WP_User_Request ) || 'request-confirmed' !== $request->status ) {
4284          return;
4285      }
4286  
4287      $already_notified = (bool) get_post_meta( $request_id, '_wp_admin_notified', true );
4288  
4289      if ( $already_notified ) {
4290          return;
4291      }
4292  
4293      if ( 'export_personal_data' === $request->action_name ) {
4294          $manage_url = admin_url( 'export-personal-data.php' );
4295      } elseif ( 'remove_personal_data' === $request->action_name ) {
4296          $manage_url = admin_url( 'erase-personal-data.php' );
4297      }
4298      $action_description = wp_user_request_action_description( $request->action_name );
4299  
4300      /**
4301       * Filters the recipient of the data request confirmation notification.
4302       *
4303       * In a Multisite environment, this will default to the email address of the
4304       * network admin because, by default, single site admins do not have the
4305       * capabilities required to process requests. Some networks may wish to
4306       * delegate those capabilities to a single-site admin, or a dedicated person
4307       * responsible for managing privacy requests.
4308       *
4309       * @since 4.9.6
4310       *
4311       * @param string          $admin_email The email address of the notification recipient.
4312       * @param WP_User_Request $request     The request that is initiating the notification.
4313       */
4314      $admin_email = apply_filters( 'user_request_confirmed_email_to', get_site_option( 'admin_email' ), $request );
4315  
4316      $email_data = array(
4317          'request'     => $request,
4318          'user_email'  => $request->email,
4319          'description' => $action_description,
4320          'manage_url'  => $manage_url,
4321          'sitename'    => wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ),
4322          'siteurl'     => home_url(),
4323          'admin_email' => $admin_email,
4324      );
4325  
4326      $subject = sprintf(
4327          /* translators: Privacy data request confirmed notification email subject. 1: Site title, 2: Name of the confirmed action. */
4328          __( '[%1$s] Action Confirmed: %2$s' ),
4329          $email_data['sitename'],
4330          $action_description
4331      );
4332  
4333      /**
4334       * Filters the subject of the user request confirmation email.
4335       *
4336       * @since 4.9.8
4337       *
4338       * @param string $subject    The email subject.
4339       * @param string $sitename   The name of the site.
4340       * @param array  $email_data {
4341       *     Data relating to the account action email.
4342       *
4343       *     @type WP_User_Request $request     User request object.
4344       *     @type string          $user_email  The email address confirming a request.
4345       *     @type string          $description Description of the action being performed so the user knows what the email is for.
4346       *     @type string          $manage_url  The link to click manage privacy requests of this type.
4347       *     @type string          $sitename    The site name sending the mail.
4348       *     @type string          $siteurl     The site URL sending the mail.
4349       *     @type string          $admin_email The administrator email receiving the mail.
4350       * }
4351       */
4352      $subject = apply_filters( 'user_request_confirmed_email_subject', $subject, $email_data['sitename'], $email_data );
4353  
4354      /* translators: Do not translate SITENAME, USER_EMAIL, DESCRIPTION, MANAGE_URL, SITEURL; those are placeholders. */
4355      $content = __(
4356          'Howdy,
4357  
4358  A user data privacy request has been confirmed on ###SITENAME###:
4359  
4360  User: ###USER_EMAIL###
4361  Request: ###DESCRIPTION###
4362  
4363  You can view and manage these data privacy requests here:
4364  
4365  ###MANAGE_URL###
4366  
4367  Regards,
4368  All at ###SITENAME###
4369  ###SITEURL###'
4370      );
4371  
4372      /**
4373       * Filters the body of the user request confirmation email.
4374       *
4375       * The email is sent to an administrator when a user request is confirmed.
4376       *
4377       * The following strings have a special meaning and will get replaced dynamically:
4378       *
4379       *  - `###SITENAME###`    The name of the site.
4380       *  - `###USER_EMAIL###`  The user email for the request.
4381       *  - `###DESCRIPTION###` Description of the action being performed so the user knows what the email is for.
4382       *  - `###MANAGE_URL###`  The URL to manage requests.
4383       *  - `###SITEURL###`     The URL to the site.
4384       *
4385       * @since 4.9.6
4386       * @deprecated 5.8.0 Use {@see 'user_request_confirmed_email_content'} instead.
4387       *                   For user erasure fulfillment email content
4388       *                   use {@see 'user_erasure_fulfillment_email_content'} instead.
4389       *
4390       * @param string $content    The email content.
4391       * @param array  $email_data {
4392       *     Data relating to the account action email.
4393       *
4394       *     @type WP_User_Request $request     User request object.
4395       *     @type string          $user_email  The email address confirming a request.
4396       *     @type string          $description Description of the action being performed
4397       *                                        so the user knows what the email is for.
4398       *     @type string          $manage_url  The link to click manage privacy requests of this type.
4399       *     @type string          $sitename    The site name sending the mail.
4400       *     @type string          $siteurl     The site URL sending the mail.
4401       *     @type string          $admin_email The administrator email receiving the mail.
4402       * }
4403       */
4404      $content = apply_filters_deprecated(
4405          'user_confirmed_action_email_content',
4406          array( $content, $email_data ),
4407          '5.8.0',
4408          sprintf(
4409              /* translators: 1 & 2: Deprecation replacement options. */
4410              __( '%1$s or %2$s' ),
4411              'user_request_confirmed_email_content',
4412              'user_erasure_fulfillment_email_content'
4413          )
4414      );
4415  
4416      /**
4417       * Filters the body of the user request confirmation email.
4418       *
4419       * The email is sent to an administrator when a user request is confirmed.
4420       * The following strings have a special meaning and will get replaced dynamically:
4421       *
4422       *  - `###SITENAME###`    The name of the site.
4423       *  - `###USER_EMAIL###`  The user email for the request.
4424       *  - `###DESCRIPTION###` Description of the action being performed so the user knows what the email is for.
4425       *  - `###MANAGE_URL###`  The URL to manage requests.
4426       *  - `###SITEURL###`     The URL to the site.
4427       *
4428       * @since 5.8.0
4429       *
4430       * @param string $content    The email content.
4431       * @param array  $email_data {
4432       *     Data relating to the account action email.
4433       *
4434       *     @type WP_User_Request $request     User request object.
4435       *     @type string          $user_email  The email address confirming a request.
4436       *     @type string          $description Description of the action being performed so the user knows what the email is for.
4437       *     @type string          $manage_url  The link to click manage privacy requests of this type.
4438       *     @type string          $sitename    The site name sending the mail.
4439       *     @type string          $siteurl     The site URL sending the mail.
4440       *     @type string          $admin_email The administrator email receiving the mail.
4441       * }
4442       */
4443      $content = apply_filters( 'user_request_confirmed_email_content', $content, $email_data );
4444  
4445      $content = str_replace( '###SITENAME###', $email_data['sitename'], $content );
4446      $content = str_replace( '###USER_EMAIL###', $email_data['user_email'], $content );
4447      $content = str_replace( '###DESCRIPTION###', $email_data['description'], $content );
4448      $content = str_replace( '###MANAGE_URL###', sanitize_url( $email_data['manage_url'] ), $content );
4449      $content = str_replace( '###SITEURL###', sanitize_url( $email_data['siteurl'] ), $content );
4450  
4451      $headers = '';
4452  
4453      /**
4454       * Filters the headers of the user request confirmation email.
4455       *
4456       * @since 5.4.0
4457       *
4458       * @param string|array $headers    The email headers.
4459       * @param string       $subject    The email subject.
4460       * @param string       $content    The email content.
4461       * @param int          $request_id The request ID.
4462       * @param array        $email_data {
4463       *     Data relating to the account action email.
4464       *
4465       *     @type WP_User_Request $request     User request object.
4466       *     @type string          $user_email  The email address confirming a request.
4467       *     @type string          $description Description of the action being performed so the user knows what the email is for.
4468       *     @type string          $manage_url  The link to click manage privacy requests of this type.
4469       *     @type string          $sitename    The site name sending the mail.
4470       *     @type string          $siteurl     The site URL sending the mail.
4471       *     @type string          $admin_email The administrator email receiving the mail.
4472       * }
4473       */
4474      $headers = apply_filters( 'user_request_confirmed_email_headers', $headers, $subject, $content, $request_id, $email_data );
4475  
4476      $email_sent = wp_mail( $email_data['admin_email'], $subject, $content, $headers );
4477  
4478      if ( $email_sent ) {
4479          update_post_meta( $request_id, '_wp_admin_notified', true );
4480      }
4481  }
4482  
4483  /**
4484   * Notifies the user when their erasure request is fulfilled.
4485   *
4486   * Without this, the user would never know if their data was actually erased.
4487   *
4488   * @since 4.9.6
4489   *
4490   * @param int $request_id The privacy request post ID associated with this request.
4491   */
4492  function _wp_privacy_send_erasure_fulfillment_notification( $request_id ) {
4493      $request = wp_get_user_request( $request_id );
4494  
4495      if ( ! ( $request instanceof WP_User_Request ) || 'request-completed' !== $request->status ) {
4496          return;
4497      }
4498  
4499      $already_notified = (bool) get_post_meta( $request_id, '_wp_user_notified', true );
4500  
4501      if ( $already_notified ) {
4502          return;
4503      }
4504  
4505      // Localize message content for user; fallback to site default for visitors.
4506      if ( ! empty( $request->user_id ) ) {
4507          $switched_locale = switch_to_user_locale( $request->user_id );
4508      } else {
4509          $switched_locale = switch_to_locale( get_locale() );
4510      }
4511  
4512      /**
4513       * Filters the recipient of the data erasure fulfillment notification.
4514       *
4515       * @since 4.9.6
4516       *
4517       * @param string          $user_email The email address of the notification recipient.
4518       * @param WP_User_Request $request    The request that is initiating the notification.
4519       */
4520      $user_email = apply_filters( 'user_erasure_fulfillment_email_to', $request->email, $request );
4521  
4522      $email_data = array(
4523          'request'            => $request,
4524          'message_recipient'  => $user_email,
4525          'privacy_policy_url' => get_privacy_policy_url(),
4526          'sitename'           => wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ),
4527          'siteurl'            => home_url(),
4528      );
4529  
4530      $subject = sprintf(
4531          /* translators: Erasure request fulfilled notification email subject. %s: Site title. */
4532          __( '[%s] Erasure Request Fulfilled' ),
4533          $email_data['sitename']
4534      );
4535  
4536      /**
4537       * Filters the subject of the email sent when an erasure request is completed.
4538       *
4539       * @since 4.9.8
4540       * @deprecated 5.8.0 Use {@see 'user_erasure_fulfillment_email_subject'} instead.
4541       *
4542       * @param string $subject    The email subject.
4543       * @param string $sitename   The name of the site.
4544       * @param array  $email_data {
4545       *     Data relating to the account action email.
4546       *
4547       *     @type WP_User_Request $request            User request object.
4548       *     @type string          $message_recipient  The address that the email will be sent to. Defaults
4549       *                                               to the value of `$request->email`, but can be changed
4550       *                                               by the `user_erasure_fulfillment_email_to` filter.
4551       *     @type string          $privacy_policy_url Privacy policy URL.
4552       *     @type string          $sitename           The site name sending the mail.
4553       *     @type string          $siteurl            The site URL sending the mail.
4554       * }
4555       */
4556      $subject = apply_filters_deprecated(
4557          'user_erasure_complete_email_subject',
4558          array( $subject, $email_data['sitename'], $email_data ),
4559          '5.8.0',
4560          'user_erasure_fulfillment_email_subject'
4561      );
4562  
4563      /**
4564       * Filters the subject of the email sent when an erasure request is completed.
4565       *
4566       * @since 5.8.0
4567       *
4568       * @param string $subject    The email subject.
4569       * @param string $sitename   The name of the site.
4570       * @param array  $email_data {
4571       *     Data relating to the account action email.
4572       *
4573       *     @type WP_User_Request $request            User request object.
4574       *     @type string          $message_recipient  The address that the email will be sent to. Defaults
4575       *                                               to the value of `$request->email`, but can be changed
4576       *                                               by the `user_erasure_fulfillment_email_to` filter.
4577       *     @type string          $privacy_policy_url Privacy policy URL.
4578       *     @type string          $sitename           The site name sending the mail.
4579       *     @type string          $siteurl            The site URL sending the mail.
4580       * }
4581       */
4582      $subject = apply_filters( 'user_erasure_fulfillment_email_subject', $subject, $email_data['sitename'], $email_data );
4583  
4584      /* translators: Do not translate SITENAME, SITEURL; those are placeholders. */
4585      $content = __(
4586          'Howdy,
4587  
4588  Your request to erase your personal data on ###SITENAME### has been completed.
4589  
4590  If you have any follow-up questions or concerns, please contact the site administrator.
4591  
4592  Regards,
4593  All at ###SITENAME###
4594  ###SITEURL###'
4595      );
4596  
4597      if ( ! empty( $email_data['privacy_policy_url'] ) ) {
4598          /* translators: Do not translate SITENAME, SITEURL, PRIVACY_POLICY_URL; those are placeholders. */
4599          $content = __(
4600              'Howdy,
4601  
4602  Your request to erase your personal data on ###SITENAME### has been completed.
4603  
4604  If you have any follow-up questions or concerns, please contact the site administrator.
4605  
4606  For more information, you can also read our privacy policy: ###PRIVACY_POLICY_URL###
4607  
4608  Regards,
4609  All at ###SITENAME###
4610  ###SITEURL###'
4611          );
4612      }
4613  
4614      /**
4615       * Filters the body of the data erasure fulfillment notification.
4616       *
4617       * The email is sent to a user when their data erasure request is fulfilled
4618       * by an administrator.
4619       *
4620       * The following strings have a special meaning and will get replaced dynamically:
4621       *
4622       *  - `###SITENAME###`           The name of the site.
4623       *  - `###PRIVACY_POLICY_URL###` Privacy policy page URL.
4624       *  - `###SITEURL###`            The URL to the site.
4625       *
4626       * @since 4.9.6
4627       * @deprecated 5.8.0 Use {@see 'user_erasure_fulfillment_email_content'} instead.
4628       *                   For user request confirmation email content
4629       *                   use {@see 'user_request_confirmed_email_content'} instead.
4630       *
4631       * @param string $content The email content.
4632       * @param array  $email_data {
4633       *     Data relating to the account action email.
4634       *
4635       *     @type WP_User_Request $request            User request object.
4636       *     @type string          $message_recipient  The address that the email will be sent to. Defaults
4637       *                                               to the value of `$request->email`, but can be changed
4638       *                                               by the `user_erasure_fulfillment_email_to` filter.
4639       *     @type string          $privacy_policy_url Privacy policy URL.
4640       *     @type string          $sitename           The site name sending the mail.
4641       *     @type string          $siteurl            The site URL sending the mail.
4642       * }
4643       */
4644      $content = apply_filters_deprecated(
4645          'user_confirmed_action_email_content',
4646          array( $content, $email_data ),
4647          '5.8.0',
4648          sprintf(
4649              /* translators: 1 & 2: Deprecation replacement options. */
4650              __( '%1$s or %2$s' ),
4651              'user_erasure_fulfillment_email_content',
4652              'user_request_confirmed_email_content'
4653          )
4654      );
4655  
4656      /**
4657       * Filters the body of the data erasure fulfillment notification.
4658       *
4659       * The email is sent to a user when their data erasure request is fulfilled
4660       * by an administrator.
4661       *
4662       * The following strings have a special meaning and will get replaced dynamically:
4663       *
4664       *  - `###SITENAME###`           The name of the site.
4665       *  - `###PRIVACY_POLICY_URL###` Privacy policy page URL.
4666       *  - `###SITEURL###`            The URL to the site.
4667       *
4668       * @since 5.8.0
4669       *
4670       * @param string $content The email content.
4671       * @param array  $email_data {
4672       *     Data relating to the account action email.
4673       *
4674       *     @type WP_User_Request $request            User request object.
4675       *     @type string          $message_recipient  The address that the email will be sent to. Defaults
4676       *                                               to the value of `$request->email`, but can be changed
4677       *                                               by the `user_erasure_fulfillment_email_to` filter.
4678       *     @type string          $privacy_policy_url Privacy policy URL.
4679       *     @type string          $sitename           The site name sending the mail.
4680       *     @type string          $siteurl            The site URL sending the mail.
4681       * }
4682       */
4683      $content = apply_filters( 'user_erasure_fulfillment_email_content', $content, $email_data );
4684  
4685      $content = str_replace( '###SITENAME###', $email_data['sitename'], $content );
4686      $content = str_replace( '###PRIVACY_POLICY_URL###', $email_data['privacy_policy_url'], $content );
4687      $content = str_replace( '###SITEURL###', sanitize_url( $email_data['siteurl'] ), $content );
4688  
4689      $headers = '';
4690  
4691      /**
4692       * Filters the headers of the data erasure fulfillment notification.
4693       *
4694       * @since 5.4.0
4695       * @deprecated 5.8.0 Use {@see 'user_erasure_fulfillment_email_headers'} instead.
4696       *
4697       * @param string|array $headers    The email headers.
4698       * @param string       $subject    The email subject.
4699       * @param string       $content    The email content.
4700       * @param int          $request_id The request ID.
4701       * @param array        $email_data {
4702       *     Data relating to the account action email.
4703       *
4704       *     @type WP_User_Request $request            User request object.
4705       *     @type string          $message_recipient  The address that the email will be sent to. Defaults
4706       *                                               to the value of `$request->email`, but can be changed
4707       *                                               by the `user_erasure_fulfillment_email_to` filter.
4708       *     @type string          $privacy_policy_url Privacy policy URL.
4709       *     @type string          $sitename           The site name sending the mail.
4710       *     @type string          $siteurl            The site URL sending the mail.
4711       * }
4712       */
4713      $headers = apply_filters_deprecated(
4714          'user_erasure_complete_email_headers',
4715          array( $headers, $subject, $content, $request_id, $email_data ),
4716          '5.8.0',
4717          'user_erasure_fulfillment_email_headers'
4718      );
4719  
4720      /**
4721       * Filters the headers of the data erasure fulfillment notification.
4722       *
4723       * @since 5.8.0
4724       *
4725       * @param string|array $headers    The email headers.
4726       * @param string       $subject    The email subject.
4727       * @param string       $content    The email content.
4728       * @param int          $request_id The request ID.
4729       * @param array        $email_data {
4730       *     Data relating to the account action email.
4731       *
4732       *     @type WP_User_Request $request            User request object.
4733       *     @type string          $message_recipient  The address that the email will be sent to. Defaults
4734       *                                               to the value of `$request->email`, but can be changed
4735       *                                               by the `user_erasure_fulfillment_email_to` filter.
4736       *     @type string          $privacy_policy_url Privacy policy URL.
4737       *     @type string          $sitename           The site name sending the mail.
4738       *     @type string          $siteurl            The site URL sending the mail.
4739       * }
4740       */
4741      $headers = apply_filters( 'user_erasure_fulfillment_email_headers', $headers, $subject, $content, $request_id, $email_data );
4742  
4743      $email_sent = wp_mail( $user_email, $subject, $content, $headers );
4744  
4745      if ( $switched_locale ) {
4746          restore_previous_locale();
4747      }
4748  
4749      if ( $email_sent ) {
4750          update_post_meta( $request_id, '_wp_user_notified', true );
4751      }
4752  }
4753  
4754  /**
4755   * Returns request confirmation message HTML.
4756   *
4757   * @since 4.9.6
4758   * @access private
4759   *
4760   * @param int $request_id The request ID being confirmed.
4761   * @return string The confirmation message.
4762   */
4763  function _wp_privacy_account_request_confirmed_message( $request_id ) {
4764      $request = wp_get_user_request( $request_id );
4765  
4766      $message  = '<p class="success">' . __( 'Action has been confirmed.' ) . '</p>';
4767      $message .= '<p>' . __( 'The site administrator has been notified and will fulfill your request as soon as possible.' ) . '</p>';
4768  
4769      if ( $request && in_array( $request->action_name, _wp_privacy_action_request_types(), true ) ) {
4770          if ( 'export_personal_data' === $request->action_name ) {
4771              $message  = '<p class="success">' . __( 'Thanks for confirming your export request.' ) . '</p>';
4772              $message .= '<p>' . __( 'The site administrator has been notified. You will receive a link to download your export via email when they fulfill your request.' ) . '</p>';
4773          } elseif ( 'remove_personal_data' === $request->action_name ) {
4774              $message  = '<p class="success">' . __( 'Thanks for confirming your erasure request.' ) . '</p>';
4775              $message .= '<p>' . __( 'The site administrator has been notified. You will receive an email confirmation when they erase your data.' ) . '</p>';
4776          }
4777      }
4778  
4779      /**
4780       * Filters the message displayed to a user when they confirm a data request.
4781       *
4782       * @since 4.9.6
4783       *
4784       * @param string $message    The message to the user.
4785       * @param int    $request_id The ID of the request being confirmed.
4786       */
4787      $message = apply_filters( 'user_request_action_confirmed_message', $message, $request_id );
4788  
4789      return $message;
4790  }
4791  
4792  /**
4793   * Creates and logs a user request to perform a specific action.
4794   *
4795   * Requests are stored inside a post type named `user_request` since they can apply to both
4796   * users on the site, or guests without a user account.
4797   *
4798   * @since 4.9.6
4799   * @since 5.7.0 Added the `$status` parameter.
4800   *
4801   * @param string $email_address           User email address. This can be the address of a registered
4802   *                                        or non-registered user.
4803   * @param string $action_name             Name of the action that is being confirmed. Required.
4804   * @param array  $request_data            Misc data you want to send with the verification request and pass
4805   *                                        to the actions once the request is confirmed.
4806   * @param string $status                  Optional request status (pending or confirmed). Default 'pending'.
4807   * @return int|WP_Error                   Returns the request ID if successful, or a WP_Error object on failure.
4808   */
4809  function wp_create_user_request( $email_address = '', $action_name = '', $request_data = array(), $status = 'pending' ) {
4810      $email_address = sanitize_email( $email_address );
4811      $action_name   = sanitize_key( $action_name );
4812  
4813      if ( ! is_email( $email_address ) ) {
4814          return new WP_Error( 'invalid_email', __( 'Invalid email address.' ) );
4815      }
4816  
4817      if ( ! in_array( $action_name, _wp_privacy_action_request_types(), true ) ) {
4818          return new WP_Error( 'invalid_action', __( 'Invalid action name.' ) );
4819      }
4820  
4821      if ( ! in_array( $status, array( 'pending', 'confirmed' ), true ) ) {
4822          return new WP_Error( 'invalid_status', __( 'Invalid request status.' ) );
4823      }
4824  
4825      $user    = get_user_by( 'email', $email_address );
4826      $user_id = $user && ! is_wp_error( $user ) ? $user->ID : 0;
4827  
4828      // Check for duplicates.
4829      $requests_query = new WP_Query(
4830          array(
4831              'post_type'     => 'user_request',
4832              'post_name__in' => array( $action_name ), // Action name stored in post_name column.
4833              'title'         => $email_address,        // Email address stored in post_title column.
4834              'post_status'   => array(
4835                  'request-pending',
4836                  'request-confirmed',
4837              ),
4838              'fields'        => 'ids',
4839          )
4840      );
4841  
4842      if ( $requests_query->found_posts ) {
4843          return new WP_Error( 'duplicate_request', __( 'An incomplete personal data request for this email address already exists.' ) );
4844      }
4845  
4846      $request_id = wp_insert_post(
4847          array(
4848              'post_author'   => $user_id,
4849              'post_name'     => $action_name,
4850              'post_title'    => $email_address,
4851              'post_content'  => wp_json_encode( $request_data ),
4852              'post_status'   => 'request-' . $status,
4853              'post_type'     => 'user_request',
4854              'post_date'     => current_time( 'mysql', false ),
4855              'post_date_gmt' => current_time( 'mysql', true ),
4856          ),
4857          true
4858      );
4859  
4860      return $request_id;
4861  }
4862  
4863  /**
4864   * Gets action description from the name and return a string.
4865   *
4866   * @since 4.9.6
4867   *
4868   * @param string $action_name Action name of the request.
4869   * @return string Human readable action name.
4870   */
4871  function wp_user_request_action_description( $action_name ) {
4872      switch ( $action_name ) {
4873          case 'export_personal_data':
4874              $description = __( 'Export Personal Data' );
4875              break;
4876          case 'remove_personal_data':
4877              $description = __( 'Erase Personal Data' );
4878              break;
4879          default:
4880              /* translators: %s: Action name. */
4881              $description = sprintf( __( 'Confirm the "%s" action' ), $action_name );
4882              break;
4883      }
4884  
4885      /**
4886       * Filters the user action description.
4887       *
4888       * @since 4.9.6
4889       *
4890       * @param string $description The default description.
4891       * @param string $action_name The name of the request.
4892       */
4893      return apply_filters( 'user_request_action_description', $description, $action_name );
4894  }
4895  
4896  /**
4897   * Send a confirmation request email to confirm an action.
4898   *
4899   * If the request is not already pending, it will be updated.
4900   *
4901   * @since 4.9.6
4902   *
4903   * @param int $request_id ID of the request created via wp_create_user_request().
4904   * @return true|WP_Error True on success, `WP_Error` on failure.
4905   */
4906  function wp_send_user_request( $request_id ) {
4907      $request_id = absint( $request_id );
4908      $request    = wp_get_user_request( $request_id );
4909  
4910      if ( ! $request ) {
4911          return new WP_Error( 'invalid_request', __( 'Invalid personal data request.' ) );
4912      }
4913  
4914      // Localize message content for user; fallback to site default for visitors.
4915      if ( ! empty( $request->user_id ) ) {
4916          $switched_locale = switch_to_user_locale( $request->user_id );
4917      } else {
4918          $switched_locale = switch_to_locale( get_locale() );
4919      }
4920  
4921      /*
4922       * Generate the new user request key first, as it is used by both the $request
4923       * object and the confirm_url array.
4924       * See https://core.trac.wordpress.org/ticket/44940
4925       */
4926      $request->confirm_key = wp_generate_user_request_key( $request_id );
4927  
4928      $email_data = array(
4929          'request'     => $request,
4930          'email'       => $request->email,
4931          'description' => wp_user_request_action_description( $request->action_name ),
4932          'confirm_url' => add_query_arg(
4933              array(
4934                  'action'      => 'confirmaction',
4935                  'request_id'  => $request_id,
4936                  'confirm_key' => $request->confirm_key,
4937              ),
4938              wp_login_url()
4939          ),
4940          'sitename'    => wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ),
4941          'siteurl'     => home_url(),
4942      );
4943  
4944      /* translators: Confirm privacy data request notification email subject. 1: Site title, 2: Name of the action. */
4945      $subject = sprintf( __( '[%1$s] Confirm Action: %2$s' ), $email_data['sitename'], $email_data['description'] );
4946  
4947      /**
4948       * Filters the subject of the email sent when an account action is attempted.
4949       *
4950       * @since 4.9.6
4951       *
4952       * @param string $subject    The email subject.
4953       * @param string $sitename   The name of the site.
4954       * @param array  $email_data {
4955       *     Data relating to the account action email.
4956       *
4957       *     @type WP_User_Request $request     User request object.
4958       *     @type string          $email       The email address this is being sent to.
4959       *     @type string          $description Description of the action being performed so the user knows what the email is for.
4960       *     @type string          $confirm_url The link to click on to confirm the account action.
4961       *     @type string          $sitename    The site name sending the mail.
4962       *     @type string          $siteurl     The site URL sending the mail.
4963       * }
4964       */
4965      $subject = apply_filters( 'user_request_action_email_subject', $subject, $email_data['sitename'], $email_data );
4966  
4967      /* translators: Do not translate DESCRIPTION, CONFIRM_URL, SITENAME, SITEURL: those are placeholders. */
4968      $content = __(
4969          'Howdy,
4970  
4971  A request has been made to perform the following action on your account:
4972  
4973       ###DESCRIPTION###
4974  
4975  To confirm this, please click on the following link:
4976  ###CONFIRM_URL###
4977  
4978  You can safely ignore and delete this email if you do not want to
4979  take this action.
4980  
4981  Regards,
4982  All at ###SITENAME###
4983  ###SITEURL###'
4984      );
4985  
4986      /**
4987       * Filters the text of the email sent when an account action is attempted.
4988       *
4989       * The following strings have a special meaning and will get replaced dynamically:
4990       *
4991       *  - `###DESCRIPTION###` Description of the action being performed so the user knows what the email is for.
4992       *  - `###CONFIRM_URL###` The link to click on to confirm the account action.
4993       *  - `###SITENAME###`    The name of the site.
4994       *  - `###SITEURL###`     The URL to the site.
4995       *
4996       * @since 4.9.6
4997       *
4998       * @param string $content Text in the email.
4999       * @param array  $email_data {
5000       *     Data relating to the account action email.
5001       *
5002       *     @type WP_User_Request $request     User request object.
5003       *     @type string          $email       The email address this is being sent to.
5004       *     @type string          $description Description of the action being performed so the user knows what the email is for.
5005       *     @type string          $confirm_url The link to click on to confirm the account action.
5006       *     @type string          $sitename    The site name sending the mail.
5007       *     @type string          $siteurl     The site URL sending the mail.
5008       * }
5009       */
5010      $content = apply_filters( 'user_request_action_email_content', $content, $email_data );
5011  
5012      $content = str_replace( '###DESCRIPTION###', $email_data['description'], $content );
5013      $content = str_replace( '###CONFIRM_URL###', sanitize_url( $email_data['confirm_url'] ), $content );
5014      $content = str_replace( '###EMAIL###', $email_data['email'], $content );
5015      $content = str_replace( '###SITENAME###', $email_data['sitename'], $content );
5016      $content = str_replace( '###SITEURL###', sanitize_url( $email_data['siteurl'] ), $content );
5017  
5018      $headers = '';
5019  
5020      /**
5021       * Filters the headers of the email sent when an account action is attempted.
5022       *
5023       * @since 5.4.0
5024       *
5025       * @param string|array $headers    The email headers.
5026       * @param string       $subject    The email subject.
5027       * @param string       $content    The email content.
5028       * @param int          $request_id The request ID.
5029       * @param array        $email_data {
5030       *     Data relating to the account action email.
5031       *
5032       *     @type WP_User_Request $request     User request object.
5033       *     @type string          $email       The email address this is being sent to.
5034       *     @type string          $description Description of the action being performed so the user knows what the email is for.
5035       *     @type string          $confirm_url The link to click on to confirm the account action.
5036       *     @type string          $sitename    The site name sending the mail.
5037       *     @type string          $siteurl     The site URL sending the mail.
5038       * }
5039       */
5040      $headers = apply_filters( 'user_request_action_email_headers', $headers, $subject, $content, $request_id, $email_data );
5041  
5042      $email_sent = wp_mail( $email_data['email'], $subject, $content, $headers );
5043  
5044      if ( $switched_locale ) {
5045          restore_previous_locale();
5046      }
5047  
5048      if ( ! $email_sent ) {
5049          return new WP_Error( 'privacy_email_error', __( 'Unable to send personal data export confirmation email.' ) );
5050      }
5051  
5052      return true;
5053  }
5054  
5055  /**
5056   * Returns a confirmation key for a user action and stores the hashed version for future comparison.
5057   *
5058   * @since 4.9.6
5059   *
5060   * @param int $request_id Request ID.
5061   * @return string Confirmation key.
5062   */
5063  function wp_generate_user_request_key( $request_id ) {
5064      // Generate something random for a confirmation key.
5065      $key = wp_generate_password( 20, false );
5066  
5067      // Save the key, hashed.
5068      wp_update_post(
5069          array(
5070              'ID'            => $request_id,
5071              'post_status'   => 'request-pending',
5072              'post_password' => wp_fast_hash( $key ),
5073          )
5074      );
5075  
5076      return $key;
5077  }
5078  
5079  /**
5080   * Validates a user request by comparing the key with the request's key.
5081   *
5082   * @since 4.9.6
5083   *
5084   * @param int    $request_id ID of the request being confirmed.
5085   * @param string $key        Provided key to validate.
5086   * @return true|WP_Error True on success, WP_Error on failure.
5087   */
5088  function wp_validate_user_request_key(
5089      $request_id,
5090      #[\SensitiveParameter]
5091      $key
5092  ) {
5093      $request_id       = absint( $request_id );
5094      $request          = wp_get_user_request( $request_id );
5095      $saved_key        = $request->confirm_key;
5096      $key_request_time = $request->modified_timestamp;
5097  
5098      if ( ! $request || ! $saved_key || ! $key_request_time ) {
5099          return new WP_Error( 'invalid_request', __( 'Invalid personal data request.' ) );
5100      }
5101  
5102      if ( ! in_array( $request->status, array( 'request-pending', 'request-failed' ), true ) ) {
5103          return new WP_Error( 'expired_request', __( 'This personal data request has expired.' ) );
5104      }
5105  
5106      if ( empty( $key ) ) {
5107          return new WP_Error( 'missing_key', __( 'The confirmation key is missing from this personal data request.' ) );
5108      }
5109  
5110      /**
5111       * Filters the expiration time of confirm keys.
5112       *
5113       * @since 4.9.6
5114       *
5115       * @param int $expiration The expiration time in seconds.
5116       */
5117      $expiration_duration = (int) apply_filters( 'user_request_key_expiration', DAY_IN_SECONDS );
5118      $expiration_time     = $key_request_time + $expiration_duration;
5119  
5120      if ( ! wp_verify_fast_hash( $key, $saved_key ) ) {
5121          return new WP_Error( 'invalid_key', __( 'The confirmation key is invalid for this personal data request.' ) );
5122      }
5123  
5124      if ( ! $expiration_time || time() > $expiration_time ) {
5125          return new WP_Error( 'expired_key', __( 'The confirmation key has expired for this personal data request.' ) );
5126      }
5127  
5128      return true;
5129  }
5130  
5131  /**
5132   * Returns the user request object for the specified request ID.
5133   *
5134   * @since 5.4.0
5135   *
5136   * @param int $request_id The ID of the user request.
5137   * @return WP_User_Request|false
5138   */
5139  function wp_get_user_request( $request_id ) {
5140      $request_id = absint( $request_id );
5141      $post       = get_post( $request_id );
5142  
5143      if ( ! $post || 'user_request' !== $post->post_type ) {
5144          return false;
5145      }
5146  
5147      return new WP_User_Request( $post );
5148  }
5149  
5150  /**
5151   * Checks if Application Passwords is supported.
5152   *
5153   * Application Passwords is supported only by sites using SSL or local environments
5154   * but may be made available using the {@see 'wp_is_application_passwords_available'} filter.
5155   *
5156   * @since 5.9.0
5157   *
5158   * @return bool
5159   */
5160  function wp_is_application_passwords_supported() {
5161      return is_ssl() || 'local' === wp_get_environment_type();
5162  }
5163  
5164  /**
5165   * Checks if Application Passwords is globally available.
5166   *
5167   * By default, Application Passwords is available to all sites using SSL or to local environments.
5168   * Use the {@see 'wp_is_application_passwords_available'} filter to adjust its availability.
5169   *
5170   * @since 5.6.0
5171   *
5172   * @return bool
5173   */
5174  function wp_is_application_passwords_available() {
5175      /**
5176       * Filters whether Application Passwords is available.
5177       *
5178       * @since 5.6.0
5179       *
5180       * @param bool $available True if available, false otherwise.
5181       */
5182      return apply_filters( 'wp_is_application_passwords_available', wp_is_application_passwords_supported() );
5183  }
5184  
5185  /**
5186   * Checks if Application Passwords is available for a specific user.
5187   *
5188   * By default all users can use Application Passwords. Use {@see 'wp_is_application_passwords_available_for_user'}
5189   * to restrict availability to certain users.
5190   *
5191   * @since 5.6.0
5192   *
5193   * @param int|WP_User $user The user to check.
5194   * @return bool
5195   */
5196  function wp_is_application_passwords_available_for_user( $user ) {
5197      if ( ! wp_is_application_passwords_available() ) {
5198          return false;
5199      }
5200  
5201      if ( ! is_object( $user ) ) {
5202          $user = get_userdata( $user );
5203      }
5204  
5205      if ( ! $user || ! $user->exists() ) {
5206          return false;
5207      }
5208  
5209      /**
5210       * Filters whether Application Passwords is available for a specific user.
5211       *
5212       * @since 5.6.0
5213       *
5214       * @param bool    $available True if available, false otherwise.
5215       * @param WP_User $user      The user to check.
5216       */
5217      return apply_filters( 'wp_is_application_passwords_available_for_user', true, $user );
5218  }
5219  
5220  /**
5221   * Registers the user meta property for persisted preferences.
5222   *
5223   * This property is used to store user preferences across page reloads and is
5224   * currently used by the block editor for preferences like 'fullscreenMode' and
5225   * 'fixedToolbar'.
5226   *
5227   * @since 6.1.0
5228   * @access private
5229   *
5230   * @global wpdb $wpdb WordPress database abstraction object.
5231   */
5232  function wp_register_persisted_preferences_meta() {
5233      /*
5234       * Create a meta key that incorporates the blog prefix so that each site
5235       * on a multisite can have distinct user preferences.
5236       */
5237      global $wpdb;
5238      $meta_key = $wpdb->get_blog_prefix() . 'persisted_preferences';
5239  
5240      register_meta(
5241          'user',
5242          $meta_key,
5243          array(
5244              'type'         => 'object',
5245              'single'       => true,
5246              'show_in_rest' => array(
5247                  'name'   => 'persisted_preferences',
5248                  'type'   => 'object',
5249                  'schema' => array(
5250                      'type'                 => 'object',
5251                      'context'              => array( 'edit' ),
5252                      'properties'           => array(
5253                          '_modified' => array(
5254                              'description' => __( 'The date and time the preferences were updated.' ),
5255                              'type'        => 'string',
5256                              'format'      => 'date-time',
5257                              'readonly'    => false,
5258                          ),
5259                      ),
5260                      'additionalProperties' => true,
5261                  ),
5262              ),
5263          )
5264      );
5265  }
5266  
5267  /**
5268   * Sets the last changed time for the 'users' cache group.
5269   *
5270   * @since 6.3.0
5271   */
5272  function wp_cache_set_users_last_changed() {
5273      wp_cache_set_last_changed( 'users' );
5274  }
5275  
5276  /**
5277   * Checks if password reset is allowed for a specific user.
5278   *
5279   * @since 6.3.0
5280   *
5281   * @param int|WP_User $user The user to check.
5282   * @return bool|WP_Error True if allowed, false or WP_Error otherwise.
5283   */
5284  function wp_is_password_reset_allowed_for_user( $user ) {
5285      if ( ! is_object( $user ) ) {
5286          $user = get_userdata( $user );
5287      }
5288  
5289      if ( ! $user || ! $user->exists() ) {
5290          return false;
5291      }
5292      $allow = true;
5293      if ( is_multisite() && is_user_spammy( $user ) ) {
5294          $allow = false;
5295      }
5296  
5297      /**
5298       * Filters whether to allow a password to be reset.
5299       *
5300       * @since 2.7.0
5301       *
5302       * @param bool $allow   Whether to allow the password to be reset. Default true.
5303       * @param int  $user_id The ID of the user attempting to reset a password.
5304       */
5305      return apply_filters( 'allow_password_reset', $allow, $user->ID );
5306  }


Generated : Sun Sep 6 08:20:27 2026 Cross-referenced by PHPXref