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


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