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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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1 <?php 2 /** 3 * These functions are needed to load WordPress. 4 * 5 * @package WordPress 6 */ 7 8 /** 9 * Returns the HTTP protocol sent by the server. 10 * 11 * @since 4.4.0 12 * 13 * @return string The HTTP protocol. Default: HTTP/1.0. 14 */ 15 function wp_get_server_protocol() { 16 $protocol = isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : ''; 17 18 if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0', 'HTTP/3' ), true ) ) { 19 $protocol = 'HTTP/1.0'; 20 } 21 22 return $protocol; 23 } 24 25 /** 26 * Fixes `$_SERVER` variables for various setups. 27 * 28 * @since 3.0.0 29 * @access private 30 * 31 * @global string $PHP_SELF The filename of the currently executing script, 32 * relative to the document root. 33 */ 34 function wp_fix_server_vars() { 35 global $PHP_SELF; 36 37 $default_server_values = array( 38 'SERVER_SOFTWARE' => '', 39 'REQUEST_URI' => '', 40 ); 41 42 $_SERVER = array_merge( $default_server_values, $_SERVER ); 43 44 // Fix for IIS when running with PHP ISAPI. 45 if ( empty( $_SERVER['REQUEST_URI'] ) 46 || ( 'cgi-fcgi' !== PHP_SAPI && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) ) 47 ) { 48 49 if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) { 50 // IIS Mod-Rewrite. 51 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL']; 52 } elseif ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) { 53 // IIS Isapi_Rewrite. 54 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL']; 55 } else { 56 // Use ORIG_PATH_INFO if there is no PATH_INFO. 57 if ( ! isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) ) { 58 $_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO']; 59 } 60 61 // Some IIS + PHP configurations put the script-name in the path-info (no need to append it twice). 62 if ( isset( $_SERVER['PATH_INFO'] ) ) { 63 if ( $_SERVER['PATH_INFO'] === $_SERVER['SCRIPT_NAME'] ) { 64 $_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO']; 65 } else { 66 $_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO']; 67 } 68 } 69 70 // Append the query string if it exists and isn't null. 71 if ( ! empty( $_SERVER['QUERY_STRING'] ) ) { 72 $_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING']; 73 } 74 } 75 } 76 77 // Fix for PHP as CGI hosts that set SCRIPT_FILENAME to something ending in php.cgi for all requests. 78 if ( isset( $_SERVER['SCRIPT_FILENAME'] ) && str_ends_with( $_SERVER['SCRIPT_FILENAME'], 'php.cgi' ) ) { 79 $_SERVER['SCRIPT_FILENAME'] = $_SERVER['PATH_TRANSLATED']; 80 } 81 82 // Fix for Dreamhost and other PHP as CGI hosts. 83 if ( isset( $_SERVER['SCRIPT_NAME'] ) && str_contains( $_SERVER['SCRIPT_NAME'], 'php.cgi' ) ) { 84 unset( $_SERVER['PATH_INFO'] ); 85 } 86 87 // Fix empty PHP_SELF. 88 $PHP_SELF = $_SERVER['PHP_SELF']; 89 if ( empty( $PHP_SELF ) ) { 90 $_SERVER['PHP_SELF'] = preg_replace( '/(\?.*)?$/', '', $_SERVER['REQUEST_URI'] ); 91 $PHP_SELF = $_SERVER['PHP_SELF']; 92 } 93 94 wp_populate_basic_auth_from_authorization_header(); 95 } 96 97 /** 98 * Populates the Basic Auth server details from the Authorization header. 99 * 100 * Some servers running in CGI or FastCGI mode don't pass the Authorization 101 * header on to WordPress. If it's been rewritten to the `HTTP_AUTHORIZATION` header, 102 * fill in the proper $_SERVER variables instead. 103 * 104 * @since 5.6.0 105 */ 106 function wp_populate_basic_auth_from_authorization_header() { 107 // If we don't have anything to pull from, return early. 108 if ( ! isset( $_SERVER['HTTP_AUTHORIZATION'] ) && ! isset( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ) ) { 109 return; 110 } 111 112 // If either PHP_AUTH key is already set, do nothing. 113 if ( isset( $_SERVER['PHP_AUTH_USER'] ) || isset( $_SERVER['PHP_AUTH_PW'] ) ) { 114 return; 115 } 116 117 // From our prior conditional, one of these must be set. 118 $header = isset( $_SERVER['HTTP_AUTHORIZATION'] ) ? $_SERVER['HTTP_AUTHORIZATION'] : $_SERVER['REDIRECT_HTTP_AUTHORIZATION']; 119 120 // Test to make sure the pattern matches expected. 121 if ( ! preg_match( '%^Basic [a-z\d/+]*={0,2}$%i', $header ) ) { 122 return; 123 } 124 125 // Removing `Basic ` the token would start six characters in. 126 $token = substr( $header, 6 ); 127 $userpass = base64_decode( $token ); 128 129 // There must be at least one colon in the string. 130 if ( ! str_contains( $userpass, ':' ) ) { 131 return; 132 } 133 134 list( $user, $pass ) = explode( ':', $userpass, 2 ); 135 136 // Now shove them in the proper keys where we're expecting later on. 137 $_SERVER['PHP_AUTH_USER'] = $user; 138 $_SERVER['PHP_AUTH_PW'] = $pass; 139 } 140 141 /** 142 * Checks for the required PHP version, and the mysqli extension or 143 * a database drop-in. 144 * 145 * Dies if requirements are not met. 146 * 147 * @since 3.0.0 148 * @access private 149 * 150 * @global string $required_php_version The required PHP version string. 151 * @global string $wp_version The WordPress version string. 152 */ 153 function wp_check_php_mysql_versions() { 154 global $required_php_version, $wp_version; 155 156 $php_version = PHP_VERSION; 157 158 if ( version_compare( $required_php_version, $php_version, '>' ) ) { 159 $protocol = wp_get_server_protocol(); 160 header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 ); 161 header( 'Content-Type: text/html; charset=utf-8' ); 162 printf( 163 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.', 164 $php_version, 165 $wp_version, 166 $required_php_version 167 ); 168 exit( 1 ); 169 } 170 171 // This runs before default constants are defined, so we can't assume WP_CONTENT_DIR is set yet. 172 $wp_content_dir = defined( 'WP_CONTENT_DIR' ) ? WP_CONTENT_DIR : ABSPATH . 'wp-content'; 173 174 if ( ! function_exists( 'mysqli_connect' ) 175 && ! file_exists( $wp_content_dir . '/db.php' ) 176 ) { 177 require_once ABSPATH . WPINC . '/functions.php'; 178 wp_load_translations_early(); 179 180 $message = '<p>' . __( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ) . "</p>\n"; 181 182 $message .= '<p>' . sprintf( 183 /* translators: %s: mysqli. */ 184 __( 'Please check that the %s PHP extension is installed and enabled.' ), 185 '<code>mysqli</code>' 186 ) . "</p>\n"; 187 188 $message .= '<p>' . sprintf( 189 /* translators: %s: Support forums URL. */ 190 __( 'If you are unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href="%s">WordPress support forums</a>.' ), 191 __( 'https://wordpress.org/support/forums/' ) 192 ) . "</p>\n"; 193 194 $args = array( 195 'exit' => false, 196 'code' => 'mysql_not_found', 197 ); 198 wp_die( 199 $message, 200 __( 'Requirements Not Met' ), 201 $args 202 ); 203 exit( 1 ); 204 } 205 } 206 207 /** 208 * Retrieves the current environment type. 209 * 210 * The type can be set via the `WP_ENVIRONMENT_TYPE` global system variable, 211 * or a constant of the same name. 212 * 213 * Possible values are 'local', 'development', 'staging', and 'production'. 214 * If not set, the type defaults to 'production'. 215 * 216 * @since 5.5.0 217 * @since 5.5.1 Added the 'local' type. 218 * @since 5.5.1 Removed the ability to alter the list of types. 219 * 220 * @return string The current environment type. 221 */ 222 function wp_get_environment_type() { 223 static $current_env = ''; 224 225 if ( ! defined( 'WP_RUN_CORE_TESTS' ) && $current_env ) { 226 return $current_env; 227 } 228 229 $wp_environments = array( 230 'local', 231 'development', 232 'staging', 233 'production', 234 ); 235 236 // Add a note about the deprecated WP_ENVIRONMENT_TYPES constant. 237 if ( defined( 'WP_ENVIRONMENT_TYPES' ) && function_exists( '_deprecated_argument' ) ) { 238 if ( function_exists( '__' ) ) { 239 /* translators: %s: WP_ENVIRONMENT_TYPES */ 240 $message = sprintf( __( 'The %s constant is no longer supported.' ), 'WP_ENVIRONMENT_TYPES' ); 241 } else { 242 $message = sprintf( 'The %s constant is no longer supported.', 'WP_ENVIRONMENT_TYPES' ); 243 } 244 245 _deprecated_argument( 246 'define()', 247 '5.5.1', 248 $message 249 ); 250 } 251 252 // Check if the environment variable has been set, if `getenv` is available on the system. 253 if ( function_exists( 'getenv' ) ) { 254 $has_env = getenv( 'WP_ENVIRONMENT_TYPE' ); 255 if ( false !== $has_env ) { 256 $current_env = $has_env; 257 } 258 } 259 260 // Fetch the environment from a constant, this overrides the global system variable. 261 if ( defined( 'WP_ENVIRONMENT_TYPE' ) && WP_ENVIRONMENT_TYPE ) { 262 $current_env = WP_ENVIRONMENT_TYPE; 263 } 264 265 // Make sure the environment is an allowed one, and not accidentally set to an invalid value. 266 if ( ! in_array( $current_env, $wp_environments, true ) ) { 267 $current_env = 'production'; 268 } 269 270 return $current_env; 271 } 272 273 /** 274 * Retrieves the current development mode. 275 * 276 * The development mode affects how certain parts of the WordPress application behave, 277 * which is relevant when developing for WordPress. 278 * 279 * Development mode can be set via the `WP_DEVELOPMENT_MODE` constant in `wp-config.php`. 280 * Possible values are 'core', 'plugin', 'theme', 'all', or an empty string to disable 281 * development mode. 'all' is a special value to signify that all three development modes 282 * ('core', 'plugin', and 'theme') are enabled. 283 * 284 * Development mode is considered separately from `WP_DEBUG` and wp_get_environment_type(). 285 * It does not affect debugging output, but rather functional nuances in WordPress. 286 * 287 * This function retrieves the currently set development mode value. To check whether 288 * a specific development mode is enabled, use wp_is_development_mode(). 289 * 290 * @since 6.3.0 291 * 292 * @return string The current development mode. 293 */ 294 function wp_get_development_mode() { 295 static $current_mode = null; 296 297 if ( ! defined( 'WP_RUN_CORE_TESTS' ) && null !== $current_mode ) { 298 return $current_mode; 299 } 300 301 $development_mode = WP_DEVELOPMENT_MODE; 302 303 // Exclusively for core tests, rely on the `$_wp_tests_development_mode` global. 304 if ( defined( 'WP_RUN_CORE_TESTS' ) && isset( $GLOBALS['_wp_tests_development_mode'] ) ) { 305 $development_mode = $GLOBALS['_wp_tests_development_mode']; 306 } 307 308 $valid_modes = array( 309 'core', 310 'plugin', 311 'theme', 312 'all', 313 '', 314 ); 315 316 if ( ! in_array( $development_mode, $valid_modes, true ) ) { 317 $development_mode = ''; 318 } 319 320 $current_mode = $development_mode; 321 322 return $current_mode; 323 } 324 325 /** 326 * Checks whether the site is in the given development mode. 327 * 328 * @since 6.3.0 329 * 330 * @param string $mode Development mode to check for. Either 'core', 'plugin', 'theme', or 'all'. 331 * @return bool True if the given mode is covered by the current development mode, false otherwise. 332 */ 333 function wp_is_development_mode( $mode ) { 334 $current_mode = wp_get_development_mode(); 335 if ( empty( $current_mode ) ) { 336 return false; 337 } 338 339 // Return true if the current mode encompasses all modes. 340 if ( 'all' === $current_mode ) { 341 return true; 342 } 343 344 // Return true if the current mode is the given mode. 345 return $mode === $current_mode; 346 } 347 348 /** 349 * Ensures all of WordPress is not loaded when handling a favicon.ico request. 350 * 351 * Instead, send the headers for a zero-length favicon and bail. 352 * 353 * @since 3.0.0 354 * @deprecated 5.4.0 Deprecated in favor of do_favicon(). 355 */ 356 function wp_favicon_request() { 357 if ( '/favicon.ico' === $_SERVER['REQUEST_URI'] ) { 358 header( 'Content-Type: image/vnd.microsoft.icon' ); 359 exit; 360 } 361 } 362 363 /** 364 * Dies with a maintenance message when conditions are met. 365 * 366 * The default message can be replaced by using a drop-in (maintenance.php in 367 * the wp-content directory). 368 * 369 * @since 3.0.0 370 * @access private 371 */ 372 function wp_maintenance() { 373 // Return if maintenance mode is disabled. 374 if ( ! wp_is_maintenance_mode() ) { 375 return; 376 } 377 378 if ( file_exists( WP_CONTENT_DIR . '/maintenance.php' ) ) { 379 require_once WP_CONTENT_DIR . '/maintenance.php'; 380 die(); 381 } 382 383 require_once ABSPATH . WPINC . '/functions.php'; 384 wp_load_translations_early(); 385 386 header( 'Retry-After: 600' ); 387 388 wp_die( 389 __( 'Briefly unavailable for scheduled maintenance. Check back in a minute.' ), 390 __( 'Maintenance' ), 391 503 392 ); 393 } 394 395 /** 396 * Checks if maintenance mode is enabled. 397 * 398 * Checks for a file in the WordPress root directory named ".maintenance". 399 * This file will contain the variable $upgrading, set to the time the file 400 * was created. If the file was created less than 10 minutes ago, WordPress 401 * is in maintenance mode. 402 * 403 * @since 5.5.0 404 * 405 * @global int $upgrading The Unix timestamp marking when upgrading WordPress began. 406 * 407 * @return bool True if maintenance mode is enabled, false otherwise. 408 */ 409 function wp_is_maintenance_mode() { 410 global $upgrading; 411 412 if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) { 413 return false; 414 } 415 416 require ABSPATH . '.maintenance'; 417 418 // If the $upgrading timestamp is older than 10 minutes, consider maintenance over. 419 if ( ( time() - $upgrading ) >= 10 * MINUTE_IN_SECONDS ) { 420 return false; 421 } 422 423 // Don't enable maintenance mode while scraping for fatal errors. 424 if ( is_int( $upgrading ) && isset( $_REQUEST['wp_scrape_key'], $_REQUEST['wp_scrape_nonce'] ) ) { 425 $key = stripslashes( $_REQUEST['wp_scrape_key'] ); 426 $nonce = stripslashes( $_REQUEST['wp_scrape_nonce'] ); 427 428 if ( md5( $upgrading ) === $key && (int) $nonce === $upgrading ) { 429 return false; 430 } 431 } 432 433 /** 434 * Filters whether to enable maintenance mode. 435 * 436 * This filter runs before it can be used by plugins. It is designed for 437 * non-web runtimes. If this filter returns true, maintenance mode will be 438 * active and the request will end. If false, the request will be allowed to 439 * continue processing even if maintenance mode should be active. 440 * 441 * @since 4.6.0 442 * 443 * @param bool $enable_checks Whether to enable maintenance mode. Default true. 444 * @param int $upgrading The timestamp set in the .maintenance file. 445 */ 446 if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) { 447 return false; 448 } 449 450 return true; 451 } 452 453 /** 454 * Gets the time elapsed so far during this PHP script. 455 * 456 * @since 5.8.0 457 * 458 * @return float Seconds since the PHP script started. 459 */ 460 function timer_float() { 461 return microtime( true ) - $_SERVER['REQUEST_TIME_FLOAT']; 462 } 463 464 /** 465 * Starts the WordPress micro-timer. 466 * 467 * @since 0.71 468 * @access private 469 * 470 * @global float $timestart Unix timestamp set at the beginning of the page load. 471 * @see timer_stop() 472 * 473 * @return bool Always returns true. 474 */ 475 function timer_start() { 476 global $timestart; 477 478 $timestart = microtime( true ); 479 480 return true; 481 } 482 483 /** 484 * Retrieves or displays the time from the page start to when function is called. 485 * 486 * @since 0.71 487 * 488 * @global float $timestart Seconds from when timer_start() is called. 489 * @global float $timeend Seconds from when function is called. 490 * 491 * @param int|bool $display Whether to echo or return the results. Accepts 0|false for return, 492 * 1|true for echo. Default 0|false. 493 * @param int $precision The number of digits from the right of the decimal to display. 494 * Default 3. 495 * @return string The "second.microsecond" finished time calculation. The number is formatted 496 * for human consumption, both localized and rounded. 497 */ 498 function timer_stop( $display = 0, $precision = 3 ) { 499 global $timestart, $timeend; 500 501 $timeend = microtime( true ); 502 $timetotal = $timeend - $timestart; 503 504 if ( function_exists( 'number_format_i18n' ) ) { 505 $r = number_format_i18n( $timetotal, $precision ); 506 } else { 507 $r = number_format( $timetotal, $precision ); 508 } 509 510 if ( $display ) { 511 echo $r; 512 } 513 514 return $r; 515 } 516 517 /** 518 * Sets PHP error reporting based on WordPress debug settings. 519 * 520 * Uses three constants: `WP_DEBUG`, `WP_DEBUG_DISPLAY`, and `WP_DEBUG_LOG`. 521 * All three can be defined in wp-config.php. By default, `WP_DEBUG` and 522 * `WP_DEBUG_LOG` are set to false, and `WP_DEBUG_DISPLAY` is set to true. 523 * 524 * When `WP_DEBUG` is true, all PHP notices are reported. WordPress will also 525 * display internal notices: when a deprecated WordPress function, function 526 * argument, or file is used. Deprecated code may be removed from a later 527 * version. 528 * 529 * It is strongly recommended that plugin and theme developers use `WP_DEBUG` 530 * in their development environments. 531 * 532 * `WP_DEBUG_DISPLAY` and `WP_DEBUG_LOG` perform no function unless `WP_DEBUG` 533 * is true. 534 * 535 * When `WP_DEBUG_DISPLAY` is true, WordPress will force errors to be displayed. 536 * `WP_DEBUG_DISPLAY` defaults to true. Defining it as null prevents WordPress 537 * from changing the global configuration setting. Defining `WP_DEBUG_DISPLAY` 538 * as false will force errors to be hidden. 539 * 540 * When `WP_DEBUG_LOG` is true, errors will be logged to `wp-content/debug.log`. 541 * When `WP_DEBUG_LOG` is a valid path, errors will be logged to the specified file. 542 * 543 * Errors are never displayed for XML-RPC, REST, `ms-files.php`, and Ajax requests. 544 * 545 * @since 3.0.0 546 * @since 5.1.0 `WP_DEBUG_LOG` can be a file path. 547 * @access private 548 */ 549 function wp_debug_mode() { 550 /** 551 * Filters whether to allow the debug mode check to occur. 552 * 553 * This filter runs before it can be used by plugins. It is designed for 554 * non-web runtimes. Returning false causes the `WP_DEBUG` and related 555 * constants to not be checked and the default PHP values for errors 556 * will be used unless you take care to update them yourself. 557 * 558 * To use this filter you must define a `$wp_filter` global before 559 * WordPress loads, usually in `wp-config.php`. 560 * 561 * Example: 562 * 563 * $GLOBALS['wp_filter'] = array( 564 * 'enable_wp_debug_mode_checks' => array( 565 * 10 => array( 566 * array( 567 * 'accepted_args' => 0, 568 * 'function' => function() { 569 * return false; 570 * }, 571 * ), 572 * ), 573 * ), 574 * ); 575 * 576 * @since 4.6.0 577 * 578 * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true. 579 */ 580 if ( ! apply_filters( 'enable_wp_debug_mode_checks', true ) ) { 581 return; 582 } 583 584 if ( WP_DEBUG ) { 585 error_reporting( E_ALL ); 586 587 if ( WP_DEBUG_DISPLAY ) { 588 ini_set( 'display_errors', 1 ); 589 } elseif ( null !== WP_DEBUG_DISPLAY ) { 590 ini_set( 'display_errors', 0 ); 591 } 592 593 if ( in_array( strtolower( (string) WP_DEBUG_LOG ), array( 'true', '1' ), true ) ) { 594 $log_path = WP_CONTENT_DIR . '/debug.log'; 595 } elseif ( is_string( WP_DEBUG_LOG ) ) { 596 $log_path = WP_DEBUG_LOG; 597 } else { 598 $log_path = false; 599 } 600 601 if ( $log_path ) { 602 ini_set( 'log_errors', 1 ); 603 ini_set( 'error_log', $log_path ); 604 } 605 } else { 606 error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR ); 607 } 608 609 /* 610 * The 'REST_REQUEST' check here is optimistic as the constant is most 611 * likely not set at this point even if it is in fact a REST request. 612 */ 613 if ( defined( 'XMLRPC_REQUEST' ) || defined( 'REST_REQUEST' ) || defined( 'MS_FILES_REQUEST' ) 614 || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) 615 || wp_doing_ajax() || wp_is_json_request() 616 ) { 617 ini_set( 'display_errors', 0 ); 618 } 619 } 620 621 /** 622 * Sets the location of the language directory. 623 * 624 * To set directory manually, define the `WP_LANG_DIR` constant 625 * in wp-config.php. 626 * 627 * If the language directory exists within `WP_CONTENT_DIR`, it 628 * is used. Otherwise the language directory is assumed to live 629 * in `WPINC`. 630 * 631 * @since 3.0.0 632 * @access private 633 */ 634 function wp_set_lang_dir() { 635 if ( ! defined( 'WP_LANG_DIR' ) ) { 636 if ( file_exists( WP_CONTENT_DIR . '/languages' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) 637 || ! @is_dir( ABSPATH . WPINC . '/languages' ) 638 ) { 639 /** 640 * Server path of the language directory. 641 * 642 * No leading slash, no trailing slash, full path, not relative to ABSPATH 643 * 644 * @since 2.1.0 645 */ 646 define( 'WP_LANG_DIR', WP_CONTENT_DIR . '/languages' ); 647 648 if ( ! defined( 'LANGDIR' ) ) { 649 // Old static relative path maintained for limited backward compatibility - won't work in some cases. 650 define( 'LANGDIR', 'wp-content/languages' ); 651 } 652 } else { 653 /** 654 * Server path of the language directory. 655 * 656 * No leading slash, no trailing slash, full path, not relative to `ABSPATH`. 657 * 658 * @since 2.1.0 659 */ 660 define( 'WP_LANG_DIR', ABSPATH . WPINC . '/languages' ); 661 662 if ( ! defined( 'LANGDIR' ) ) { 663 // Old relative path maintained for backward compatibility. 664 define( 'LANGDIR', WPINC . '/languages' ); 665 } 666 } 667 } 668 } 669 670 /** 671 * Loads the database class file and instantiates the `$wpdb` global. 672 * 673 * @since 2.5.0 674 * 675 * @global wpdb $wpdb WordPress database abstraction object. 676 */ 677 function require_wp_db() { 678 global $wpdb; 679 680 require_once ABSPATH . WPINC . '/class-wpdb.php'; 681 682 if ( file_exists( WP_CONTENT_DIR . '/db.php' ) ) { 683 require_once WP_CONTENT_DIR . '/db.php'; 684 } 685 686 if ( isset( $wpdb ) ) { 687 return; 688 } 689 690 $dbuser = defined( 'DB_USER' ) ? DB_USER : ''; 691 $dbpassword = defined( 'DB_PASSWORD' ) ? DB_PASSWORD : ''; 692 $dbname = defined( 'DB_NAME' ) ? DB_NAME : ''; 693 $dbhost = defined( 'DB_HOST' ) ? DB_HOST : ''; 694 695 $wpdb = new wpdb( $dbuser, $dbpassword, $dbname, $dbhost ); 696 } 697 698 /** 699 * Sets the database table prefix and the format specifiers for database 700 * table columns. 701 * 702 * Columns not listed here default to `%s`. 703 * 704 * @since 3.0.0 705 * @access private 706 * 707 * @global wpdb $wpdb WordPress database abstraction object. 708 * @global string $table_prefix The database table prefix. 709 */ 710 function wp_set_wpdb_vars() { 711 global $wpdb, $table_prefix; 712 713 if ( ! empty( $wpdb->error ) ) { 714 dead_db(); 715 } 716 717 $wpdb->field_types = array( 718 'post_author' => '%d', 719 'post_parent' => '%d', 720 'menu_order' => '%d', 721 'term_id' => '%d', 722 'term_group' => '%d', 723 'term_taxonomy_id' => '%d', 724 'parent' => '%d', 725 'count' => '%d', 726 'object_id' => '%d', 727 'term_order' => '%d', 728 'ID' => '%d', 729 'comment_ID' => '%d', 730 'comment_post_ID' => '%d', 731 'comment_parent' => '%d', 732 'user_id' => '%d', 733 'link_id' => '%d', 734 'link_owner' => '%d', 735 'link_rating' => '%d', 736 'option_id' => '%d', 737 'blog_id' => '%d', 738 'meta_id' => '%d', 739 'post_id' => '%d', 740 'user_status' => '%d', 741 'umeta_id' => '%d', 742 'comment_karma' => '%d', 743 'comment_count' => '%d', 744 // Multisite: 745 'active' => '%d', 746 'cat_id' => '%d', 747 'deleted' => '%d', 748 'lang_id' => '%d', 749 'mature' => '%d', 750 'public' => '%d', 751 'site_id' => '%d', 752 'spam' => '%d', 753 ); 754 755 $prefix = $wpdb->set_prefix( $table_prefix ); 756 757 if ( is_wp_error( $prefix ) ) { 758 wp_load_translations_early(); 759 wp_die( 760 sprintf( 761 /* translators: 1: $table_prefix, 2: wp-config.php */ 762 __( '<strong>Error:</strong> %1$s in %2$s can only contain numbers, letters, and underscores.' ), 763 '<code>$table_prefix</code>', 764 '<code>wp-config.php</code>' 765 ) 766 ); 767 } 768 } 769 770 /** 771 * Toggles `$_wp_using_ext_object_cache` on and off without directly 772 * touching global. 773 * 774 * @since 3.7.0 775 * 776 * @global bool $_wp_using_ext_object_cache 777 * 778 * @param bool $using Whether external object cache is being used. 779 * @return bool The current 'using' setting. 780 */ 781 function wp_using_ext_object_cache( $using = null ) { 782 global $_wp_using_ext_object_cache; 783 784 $current_using = $_wp_using_ext_object_cache; 785 786 if ( null !== $using ) { 787 $_wp_using_ext_object_cache = $using; 788 } 789 790 return $current_using; 791 } 792 793 /** 794 * Starts the WordPress object cache. 795 * 796 * If an object-cache.php file exists in the wp-content directory, 797 * it uses that drop-in as an external object cache. 798 * 799 * @since 3.0.0 800 * @access private 801 * 802 * @global array $wp_filter Stores all of the filters. 803 */ 804 function wp_start_object_cache() { 805 global $wp_filter; 806 static $first_init = true; 807 808 // Only perform the following checks once. 809 810 /** 811 * Filters whether to enable loading of the object-cache.php drop-in. 812 * 813 * This filter runs before it can be used by plugins. It is designed for non-web 814 * runtimes. If false is returned, object-cache.php will never be loaded. 815 * 816 * @since 5.8.0 817 * 818 * @param bool $enable_object_cache Whether to enable loading object-cache.php (if present). 819 * Default true. 820 */ 821 if ( $first_init && apply_filters( 'enable_loading_object_cache_dropin', true ) ) { 822 if ( ! function_exists( 'wp_cache_init' ) ) { 823 /* 824 * This is the normal situation. First-run of this function. No 825 * caching backend has been loaded. 826 * 827 * We try to load a custom caching backend, and then, if it 828 * results in a wp_cache_init() function existing, we note 829 * that an external object cache is being used. 830 */ 831 if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { 832 require_once WP_CONTENT_DIR . '/object-cache.php'; 833 834 if ( function_exists( 'wp_cache_init' ) ) { 835 wp_using_ext_object_cache( true ); 836 } 837 838 // Re-initialize any hooks added manually by object-cache.php. 839 if ( $wp_filter ) { 840 $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter ); 841 } 842 } 843 } elseif ( ! wp_using_ext_object_cache() && file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) { 844 /* 845 * Sometimes advanced-cache.php can load object-cache.php before 846 * this function is run. This breaks the function_exists() check 847 * above and can result in wp_using_ext_object_cache() returning 848 * false when actually an external cache is in use. 849 */ 850 wp_using_ext_object_cache( true ); 851 } 852 } 853 854 if ( ! wp_using_ext_object_cache() ) { 855 require_once ABSPATH . WPINC . '/cache.php'; 856 } 857 858 require_once ABSPATH . WPINC . '/cache-compat.php'; 859 860 /* 861 * If cache supports reset, reset instead of init if already 862 * initialized. Reset signals to the cache that global IDs 863 * have changed and it may need to update keys and cleanup caches. 864 */ 865 if ( ! $first_init && function_exists( 'wp_cache_switch_to_blog' ) ) { 866 wp_cache_switch_to_blog( get_current_blog_id() ); 867 } elseif ( function_exists( 'wp_cache_init' ) ) { 868 wp_cache_init(); 869 } 870 871 if ( function_exists( 'wp_cache_add_global_groups' ) ) { 872 wp_cache_add_global_groups( 873 array( 874 'blog-details', 875 'blog-id-cache', 876 'blog-lookup', 877 'blog_meta', 878 'global-posts', 879 'image_editor', 880 'networks', 881 'network-queries', 882 'sites', 883 'site-details', 884 'site-options', 885 'site-queries', 886 'site-transient', 887 'theme_files', 888 'translation_files', 889 'rss', 890 'users', 891 'user-queries', 892 'user_meta', 893 'useremail', 894 'userlogins', 895 'userslugs', 896 ) 897 ); 898 899 wp_cache_add_non_persistent_groups( array( 'counts', 'plugins', 'theme_json' ) ); 900 } 901 902 $first_init = false; 903 } 904 905 /** 906 * Redirects to the installer if WordPress is not installed. 907 * 908 * Dies with an error message when Multisite is enabled. 909 * 910 * @since 3.0.0 911 * @access private 912 */ 913 function wp_not_installed() { 914 if ( is_blog_installed() || wp_installing() ) { 915 return; 916 } 917 918 nocache_headers(); 919 920 if ( is_multisite() ) { 921 wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) ); 922 } 923 924 require ABSPATH . WPINC . '/kses.php'; 925 require ABSPATH . WPINC . '/pluggable.php'; 926 927 $link = wp_guess_url() . '/wp-admin/install.php'; 928 929 wp_redirect( $link ); 930 die(); 931 } 932 933 /** 934 * Retrieves an array of must-use plugin files. 935 * 936 * The default directory is wp-content/mu-plugins. To change the default 937 * directory manually, define `WPMU_PLUGIN_DIR` and `WPMU_PLUGIN_URL` 938 * in wp-config.php. 939 * 940 * @since 3.0.0 941 * @access private 942 * 943 * @return string[] Array of absolute paths of files to include. 944 */ 945 function wp_get_mu_plugins() { 946 $mu_plugins = array(); 947 948 if ( ! is_dir( WPMU_PLUGIN_DIR ) ) { 949 return $mu_plugins; 950 } 951 952 $dh = opendir( WPMU_PLUGIN_DIR ); 953 if ( ! $dh ) { 954 return $mu_plugins; 955 } 956 957 while ( ( $plugin = readdir( $dh ) ) !== false ) { 958 if ( str_ends_with( $plugin, '.php' ) ) { 959 $mu_plugins[] = WPMU_PLUGIN_DIR . '/' . $plugin; 960 } 961 } 962 963 closedir( $dh ); 964 965 sort( $mu_plugins ); 966 967 return $mu_plugins; 968 } 969 970 /** 971 * Retrieves an array of active and valid plugin files. 972 * 973 * While upgrading or installing WordPress, no plugins are returned. 974 * 975 * The default directory is `wp-content/plugins`. To change the default 976 * directory manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL` 977 * in `wp-config.php`. 978 * 979 * @since 3.0.0 980 * @access private 981 * 982 * @return string[] Array of paths to plugin files relative to the plugins directory. 983 */ 984 function wp_get_active_and_valid_plugins() { 985 $plugins = array(); 986 $active_plugins = (array) get_option( 'active_plugins', array() ); 987 988 // Check for hacks file if the option is enabled. 989 if ( get_option( 'hack_file' ) && file_exists( ABSPATH . 'my-hacks.php' ) ) { 990 _deprecated_file( 'my-hacks.php', '1.5.0' ); 991 array_unshift( $plugins, ABSPATH . 'my-hacks.php' ); 992 } 993 994 if ( empty( $active_plugins ) || wp_installing() ) { 995 return $plugins; 996 } 997 998 $network_plugins = is_multisite() ? wp_get_active_network_plugins() : false; 999 1000 foreach ( $active_plugins as $plugin ) { 1001 if ( ! validate_file( $plugin ) // $plugin must validate as file. 1002 && str_ends_with( $plugin, '.php' ) // $plugin must end with '.php'. 1003 && file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist. 1004 // Not already included as a network plugin. 1005 && ( ! $network_plugins || ! in_array( WP_PLUGIN_DIR . '/' . $plugin, $network_plugins, true ) ) 1006 ) { 1007 $plugins[] = WP_PLUGIN_DIR . '/' . $plugin; 1008 } 1009 } 1010 1011 /* 1012 * Remove plugins from the list of active plugins when we're on an endpoint 1013 * that should be protected against WSODs and the plugin is paused. 1014 */ 1015 if ( wp_is_recovery_mode() ) { 1016 $plugins = wp_skip_paused_plugins( $plugins ); 1017 } 1018 1019 return $plugins; 1020 } 1021 1022 /** 1023 * Filters a given list of plugins, removing any paused plugins from it. 1024 * 1025 * @since 5.2.0 1026 * 1027 * @global WP_Paused_Extensions_Storage $_paused_plugins 1028 * 1029 * @param string[] $plugins Array of absolute plugin main file paths. 1030 * @return string[] Filtered array of plugins, without any paused plugins. 1031 */ 1032 function wp_skip_paused_plugins( array $plugins ) { 1033 $paused_plugins = wp_paused_plugins()->get_all(); 1034 1035 if ( empty( $paused_plugins ) ) { 1036 return $plugins; 1037 } 1038 1039 foreach ( $plugins as $index => $plugin ) { 1040 list( $plugin ) = explode( '/', plugin_basename( $plugin ) ); 1041 1042 if ( array_key_exists( $plugin, $paused_plugins ) ) { 1043 unset( $plugins[ $index ] ); 1044 1045 // Store list of paused plugins for displaying an admin notice. 1046 $GLOBALS['_paused_plugins'][ $plugin ] = $paused_plugins[ $plugin ]; 1047 } 1048 } 1049 1050 return $plugins; 1051 } 1052 1053 /** 1054 * Retrieves an array of active and valid themes. 1055 * 1056 * While upgrading or installing WordPress, no themes are returned. 1057 * 1058 * @since 5.1.0 1059 * @access private 1060 * 1061 * @global string $pagenow The filename of the current screen. 1062 * @global string $wp_stylesheet_path Path to current theme's stylesheet directory. 1063 * @global string $wp_template_path Path to current theme's template directory. 1064 * 1065 * @return string[] Array of absolute paths to theme directories. 1066 */ 1067 function wp_get_active_and_valid_themes() { 1068 global $pagenow, $wp_stylesheet_path, $wp_template_path; 1069 1070 $themes = array(); 1071 1072 if ( wp_installing() && 'wp-activate.php' !== $pagenow ) { 1073 return $themes; 1074 } 1075 1076 if ( is_child_theme() ) { 1077 $themes[] = $wp_stylesheet_path; 1078 } 1079 1080 $themes[] = $wp_template_path; 1081 1082 /* 1083 * Remove themes from the list of active themes when we're on an endpoint 1084 * that should be protected against WSODs and the theme is paused. 1085 */ 1086 if ( wp_is_recovery_mode() ) { 1087 $themes = wp_skip_paused_themes( $themes ); 1088 1089 // If no active and valid themes exist, skip loading themes. 1090 if ( empty( $themes ) ) { 1091 add_filter( 'wp_using_themes', '__return_false' ); 1092 } 1093 } 1094 1095 return $themes; 1096 } 1097 1098 /** 1099 * Filters a given list of themes, removing any paused themes from it. 1100 * 1101 * @since 5.2.0 1102 * 1103 * @global WP_Paused_Extensions_Storage $_paused_themes 1104 * 1105 * @param string[] $themes Array of absolute theme directory paths. 1106 * @return string[] Filtered array of absolute paths to themes, without any paused themes. 1107 */ 1108 function wp_skip_paused_themes( array $themes ) { 1109 $paused_themes = wp_paused_themes()->get_all(); 1110 1111 if ( empty( $paused_themes ) ) { 1112 return $themes; 1113 } 1114 1115 foreach ( $themes as $index => $theme ) { 1116 $theme = basename( $theme ); 1117 1118 if ( array_key_exists( $theme, $paused_themes ) ) { 1119 unset( $themes[ $index ] ); 1120 1121 // Store list of paused themes for displaying an admin notice. 1122 $GLOBALS['_paused_themes'][ $theme ] = $paused_themes[ $theme ]; 1123 } 1124 } 1125 1126 return $themes; 1127 } 1128 1129 /** 1130 * Determines whether WordPress is in Recovery Mode. 1131 * 1132 * In this mode, plugins or themes that cause WSODs will be paused. 1133 * 1134 * @since 5.2.0 1135 * 1136 * @return bool 1137 */ 1138 function wp_is_recovery_mode() { 1139 return wp_recovery_mode()->is_active(); 1140 } 1141 1142 /** 1143 * Determines whether we are currently on an endpoint that should be protected against WSODs. 1144 * 1145 * @since 5.2.0 1146 * 1147 * @global string $pagenow The filename of the current screen. 1148 * 1149 * @return bool True if the current endpoint should be protected. 1150 */ 1151 function is_protected_endpoint() { 1152 // Protect login pages. 1153 if ( isset( $GLOBALS['pagenow'] ) && 'wp-login.php' === $GLOBALS['pagenow'] ) { 1154 return true; 1155 } 1156 1157 // Protect the admin backend. 1158 if ( is_admin() && ! wp_doing_ajax() ) { 1159 return true; 1160 } 1161 1162 // Protect Ajax actions that could help resolve a fatal error should be available. 1163 if ( is_protected_ajax_action() ) { 1164 return true; 1165 } 1166 1167 /** 1168 * Filters whether the current request is against a protected endpoint. 1169 * 1170 * This filter is only fired when an endpoint is requested which is not already protected by 1171 * WordPress core. As such, it exclusively allows providing further protected endpoints in 1172 * addition to the admin backend, login pages and protected Ajax actions. 1173 * 1174 * @since 5.2.0 1175 * 1176 * @param bool $is_protected_endpoint Whether the currently requested endpoint is protected. 1177 * Default false. 1178 */ 1179 return (bool) apply_filters( 'is_protected_endpoint', false ); 1180 } 1181 1182 /** 1183 * Determines whether we are currently handling an Ajax action that should be protected against WSODs. 1184 * 1185 * @since 5.2.0 1186 * 1187 * @return bool True if the current Ajax action should be protected. 1188 */ 1189 function is_protected_ajax_action() { 1190 if ( ! wp_doing_ajax() ) { 1191 return false; 1192 } 1193 1194 if ( ! isset( $_REQUEST['action'] ) ) { 1195 return false; 1196 } 1197 1198 $actions_to_protect = array( 1199 'edit-theme-plugin-file', // Saving changes in the core code editor. 1200 'heartbeat', // Keep the heart beating. 1201 'install-plugin', // Installing a new plugin. 1202 'install-theme', // Installing a new theme. 1203 'search-plugins', // Searching in the list of plugins. 1204 'search-install-plugins', // Searching for a plugin in the plugin install screen. 1205 'update-plugin', // Update an existing plugin. 1206 'update-theme', // Update an existing theme. 1207 'activate-plugin', // Activating an existing plugin. 1208 ); 1209 1210 /** 1211 * Filters the array of protected Ajax actions. 1212 * 1213 * This filter is only fired when doing Ajax and the Ajax request has an 'action' property. 1214 * 1215 * @since 5.2.0 1216 * 1217 * @param string[] $actions_to_protect Array of strings with Ajax actions to protect. 1218 */ 1219 $actions_to_protect = (array) apply_filters( 'wp_protected_ajax_actions', $actions_to_protect ); 1220 1221 if ( ! in_array( $_REQUEST['action'], $actions_to_protect, true ) ) { 1222 return false; 1223 } 1224 1225 return true; 1226 } 1227 1228 /** 1229 * Sets internal encoding. 1230 * 1231 * In most cases the default internal encoding is latin1, which is 1232 * of no use, since we want to use the `mb_` functions for `utf-8` strings. 1233 * 1234 * @since 3.0.0 1235 * @access private 1236 */ 1237 function wp_set_internal_encoding() { 1238 if ( function_exists( 'mb_internal_encoding' ) ) { 1239 $charset = get_option( 'blog_charset' ); 1240 // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged 1241 if ( ! $charset || ! @mb_internal_encoding( $charset ) ) { 1242 mb_internal_encoding( 'UTF-8' ); 1243 } 1244 } 1245 } 1246 1247 /** 1248 * Adds magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`. 1249 * 1250 * Also forces `$_REQUEST` to be `$_GET + $_POST`. If `$_SERVER`, 1251 * `$_COOKIE`, or `$_ENV` are needed, use those superglobals directly. 1252 * 1253 * @since 3.0.0 1254 * @access private 1255 */ 1256 function wp_magic_quotes() { 1257 // Escape with wpdb. 1258 $_GET = add_magic_quotes( $_GET ); 1259 $_POST = add_magic_quotes( $_POST ); 1260 $_COOKIE = add_magic_quotes( $_COOKIE ); 1261 $_SERVER = add_magic_quotes( $_SERVER ); 1262 1263 // Force REQUEST to be GET + POST. 1264 $_REQUEST = array_merge( $_GET, $_POST ); 1265 } 1266 1267 /** 1268 * Runs just before PHP shuts down execution. 1269 * 1270 * @since 1.2.0 1271 * @access private 1272 */ 1273 function shutdown_action_hook() { 1274 /** 1275 * Fires just before PHP shuts down execution. 1276 * 1277 * @since 1.2.0 1278 */ 1279 do_action( 'shutdown' ); 1280 1281 wp_cache_close(); 1282 } 1283 1284 /** 1285 * Clones an object. 1286 * 1287 * @since 2.7.0 1288 * @deprecated 3.2.0 1289 * 1290 * @param object $input_object The object to clone. 1291 * @return object The cloned object. 1292 */ 1293 function wp_clone( $input_object ) { 1294 // Use parens for clone to accommodate PHP 4. See #17880. 1295 return clone( $input_object ); 1296 } 1297 1298 /** 1299 * Determines whether the current request is for the login screen. 1300 * 1301 * @since 6.1.0 1302 * 1303 * @see wp_login_url() 1304 * 1305 * @return bool True if inside WordPress login screen, false otherwise. 1306 */ 1307 function is_login() { 1308 return false !== stripos( wp_login_url(), $_SERVER['SCRIPT_NAME'] ); 1309 } 1310 1311 /** 1312 * Determines whether the current request is for an administrative interface page. 1313 * 1314 * Does not check if the user is an administrator; use current_user_can() 1315 * for checking roles and capabilities. 1316 * 1317 * For more information on this and similar theme functions, check out 1318 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 1319 * Conditional Tags} article in the Theme Developer Handbook. 1320 * 1321 * @since 1.5.1 1322 * 1323 * @global WP_Screen $current_screen WordPress current screen object. 1324 * 1325 * @return bool True if inside WordPress administration interface, false otherwise. 1326 */ 1327 function is_admin() { 1328 if ( isset( $GLOBALS['current_screen'] ) ) { 1329 return $GLOBALS['current_screen']->in_admin(); 1330 } elseif ( defined( 'WP_ADMIN' ) ) { 1331 return WP_ADMIN; 1332 } 1333 1334 return false; 1335 } 1336 1337 /** 1338 * Determines whether the current request is for a site's administrative interface. 1339 * 1340 * e.g. `/wp-admin/` 1341 * 1342 * Does not check if the user is an administrator; use current_user_can() 1343 * for checking roles and capabilities. 1344 * 1345 * @since 3.1.0 1346 * 1347 * @global WP_Screen $current_screen WordPress current screen object. 1348 * 1349 * @return bool True if inside WordPress site administration pages. 1350 */ 1351 function is_blog_admin() { 1352 if ( isset( $GLOBALS['current_screen'] ) ) { 1353 return $GLOBALS['current_screen']->in_admin( 'site' ); 1354 } elseif ( defined( 'WP_BLOG_ADMIN' ) ) { 1355 return WP_BLOG_ADMIN; 1356 } 1357 1358 return false; 1359 } 1360 1361 /** 1362 * Determines whether the current request is for the network administrative interface. 1363 * 1364 * e.g. `/wp-admin/network/` 1365 * 1366 * Does not check if the user is an administrator; use current_user_can() 1367 * for checking roles and capabilities. 1368 * 1369 * Does not check if the site is a Multisite network; use is_multisite() 1370 * for checking if Multisite is enabled. 1371 * 1372 * @since 3.1.0 1373 * 1374 * @global WP_Screen $current_screen WordPress current screen object. 1375 * 1376 * @return bool True if inside WordPress network administration pages. 1377 */ 1378 function is_network_admin() { 1379 if ( isset( $GLOBALS['current_screen'] ) ) { 1380 return $GLOBALS['current_screen']->in_admin( 'network' ); 1381 } elseif ( defined( 'WP_NETWORK_ADMIN' ) ) { 1382 return WP_NETWORK_ADMIN; 1383 } 1384 1385 return false; 1386 } 1387 1388 /** 1389 * Determines whether the current request is for a user admin screen. 1390 * 1391 * e.g. `/wp-admin/user/` 1392 * 1393 * Does not check if the user is an administrator; use current_user_can() 1394 * for checking roles and capabilities. 1395 * 1396 * @since 3.1.0 1397 * 1398 * @global WP_Screen $current_screen WordPress current screen object. 1399 * 1400 * @return bool True if inside WordPress user administration pages. 1401 */ 1402 function is_user_admin() { 1403 if ( isset( $GLOBALS['current_screen'] ) ) { 1404 return $GLOBALS['current_screen']->in_admin( 'user' ); 1405 } elseif ( defined( 'WP_USER_ADMIN' ) ) { 1406 return WP_USER_ADMIN; 1407 } 1408 1409 return false; 1410 } 1411 1412 /** 1413 * Determines whether Multisite is enabled. 1414 * 1415 * @since 3.0.0 1416 * 1417 * @return bool True if Multisite is enabled, false otherwise. 1418 */ 1419 function is_multisite() { 1420 if ( defined( 'MULTISITE' ) ) { 1421 return MULTISITE; 1422 } 1423 1424 if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) { 1425 return true; 1426 } 1427 1428 return false; 1429 } 1430 1431 /** 1432 * Converts a value to non-negative integer. 1433 * 1434 * @since 2.5.0 1435 * 1436 * @param mixed $maybeint Data you wish to have converted to a non-negative integer. 1437 * @return int A non-negative integer. 1438 */ 1439 function absint( $maybeint ) { 1440 return abs( (int) $maybeint ); 1441 } 1442 1443 /** 1444 * Retrieves the current site ID. 1445 * 1446 * @since 3.1.0 1447 * 1448 * @global int $blog_id 1449 * 1450 * @return int Site ID. 1451 */ 1452 function get_current_blog_id() { 1453 global $blog_id; 1454 1455 return absint( $blog_id ); 1456 } 1457 1458 /** 1459 * Retrieves the current network ID. 1460 * 1461 * @since 4.6.0 1462 * 1463 * @return int The ID of the current network. 1464 */ 1465 function get_current_network_id() { 1466 if ( ! is_multisite() ) { 1467 return 1; 1468 } 1469 1470 $current_network = get_network(); 1471 1472 if ( ! isset( $current_network->id ) ) { 1473 return get_main_network_id(); 1474 } 1475 1476 return absint( $current_network->id ); 1477 } 1478 1479 /** 1480 * Attempts an early load of translations. 1481 * 1482 * Used for errors encountered during the initial loading process, before 1483 * the locale has been properly detected and loaded. 1484 * 1485 * Designed for unusual load sequences (like setup-config.php) or for when 1486 * the script will then terminate with an error, otherwise there is a risk 1487 * that a file can be double-included. 1488 * 1489 * @since 3.4.0 1490 * @access private 1491 * 1492 * @global WP_Textdomain_Registry $wp_textdomain_registry WordPress Textdomain Registry. 1493 * @global WP_Locale $wp_locale WordPress date and time locale object. 1494 */ 1495 function wp_load_translations_early() { 1496 global $wp_textdomain_registry, $wp_locale; 1497 static $loaded = false; 1498 1499 if ( $loaded ) { 1500 return; 1501 } 1502 1503 $loaded = true; 1504 1505 if ( function_exists( 'did_action' ) && did_action( 'init' ) ) { 1506 return; 1507 } 1508 1509 // We need $wp_local_package. 1510 require ABSPATH . WPINC . '/version.php'; 1511 1512 // Translation and localization. 1513 require_once ABSPATH . WPINC . '/pomo/mo.php'; 1514 require_once ABSPATH . WPINC . '/l10n/class-wp-translation-controller.php'; 1515 require_once ABSPATH . WPINC . '/l10n/class-wp-translations.php'; 1516 require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file.php'; 1517 require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file-mo.php'; 1518 require_once ABSPATH . WPINC . '/l10n/class-wp-translation-file-php.php'; 1519 require_once ABSPATH . WPINC . '/l10n.php'; 1520 require_once ABSPATH . WPINC . '/class-wp-textdomain-registry.php'; 1521 require_once ABSPATH . WPINC . '/class-wp-locale.php'; 1522 require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php'; 1523 1524 // General libraries. 1525 require_once ABSPATH . WPINC . '/plugin.php'; 1526 1527 $locales = array(); 1528 $locations = array(); 1529 1530 if ( ! $wp_textdomain_registry instanceof WP_Textdomain_Registry ) { 1531 $wp_textdomain_registry = new WP_Textdomain_Registry(); 1532 } 1533 1534 while ( true ) { 1535 if ( defined( 'WPLANG' ) ) { 1536 if ( '' === WPLANG ) { 1537 break; 1538 } 1539 $locales[] = WPLANG; 1540 } 1541 1542 if ( isset( $wp_local_package ) ) { 1543 $locales[] = $wp_local_package; 1544 } 1545 1546 if ( ! $locales ) { 1547 break; 1548 } 1549 1550 if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) ) { 1551 $locations[] = WP_LANG_DIR; 1552 } 1553 1554 if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) ) { 1555 $locations[] = WP_CONTENT_DIR . '/languages'; 1556 } 1557 1558 if ( @is_dir( ABSPATH . 'wp-content/languages' ) ) { 1559 $locations[] = ABSPATH . 'wp-content/languages'; 1560 } 1561 1562 if ( @is_dir( ABSPATH . WPINC . '/languages' ) ) { 1563 $locations[] = ABSPATH . WPINC . '/languages'; 1564 } 1565 1566 if ( ! $locations ) { 1567 break; 1568 } 1569 1570 $locations = array_unique( $locations ); 1571 1572 foreach ( $locales as $locale ) { 1573 foreach ( $locations as $location ) { 1574 if ( file_exists( $location . '/' . $locale . '.mo' ) ) { 1575 load_textdomain( 'default', $location . '/' . $locale . '.mo', $locale ); 1576 1577 if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) { 1578 load_textdomain( 'default', $location . '/admin-' . $locale . '.mo', $locale ); 1579 } 1580 1581 break 2; 1582 } 1583 } 1584 } 1585 1586 break; 1587 } 1588 1589 $wp_locale = new WP_Locale(); 1590 } 1591 1592 /** 1593 * Checks or sets whether WordPress is in "installation" mode. 1594 * 1595 * If the `WP_INSTALLING` constant is defined during the bootstrap, `wp_installing()` will default to `true`. 1596 * 1597 * @since 4.4.0 1598 * 1599 * @param bool $is_installing Optional. True to set WP into Installing mode, false to turn Installing mode off. 1600 * Omit this parameter if you only want to fetch the current status. 1601 * @return bool True if WP is installing, otherwise false. When a `$is_installing` is passed, the function will 1602 * report whether WP was in installing mode prior to the change to `$is_installing`. 1603 */ 1604 function wp_installing( $is_installing = null ) { 1605 static $installing = null; 1606 1607 // Support for the `WP_INSTALLING` constant, defined before WP is loaded. 1608 if ( is_null( $installing ) ) { 1609 $installing = defined( 'WP_INSTALLING' ) && WP_INSTALLING; 1610 } 1611 1612 if ( ! is_null( $is_installing ) ) { 1613 $old_installing = $installing; 1614 $installing = $is_installing; 1615 1616 return (bool) $old_installing; 1617 } 1618 1619 return (bool) $installing; 1620 } 1621 1622 /** 1623 * Determines if SSL is used. 1624 * 1625 * @since 2.6.0 1626 * @since 4.6.0 Moved from functions.php to load.php. 1627 * 1628 * @return bool True if SSL, otherwise false. 1629 */ 1630 function is_ssl() { 1631 if ( isset( $_SERVER['HTTPS'] ) ) { 1632 if ( 'on' === strtolower( $_SERVER['HTTPS'] ) ) { 1633 return true; 1634 } 1635 1636 if ( '1' === (string) $_SERVER['HTTPS'] ) { 1637 return true; 1638 } 1639 } elseif ( isset( $_SERVER['SERVER_PORT'] ) && ( '443' === (string) $_SERVER['SERVER_PORT'] ) ) { 1640 return true; 1641 } 1642 1643 return false; 1644 } 1645 1646 /** 1647 * Converts a shorthand byte value to an integer byte value. 1648 * 1649 * @since 2.3.0 1650 * @since 4.6.0 Moved from media.php to load.php. 1651 * 1652 * @link https://www.php.net/manual/en/function.ini-get.php 1653 * @link https://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes 1654 * 1655 * @param string $value A (PHP ini) byte value, either shorthand or ordinary. 1656 * @return int An integer byte value. 1657 */ 1658 function wp_convert_hr_to_bytes( $value ) { 1659 $value = strtolower( trim( $value ) ); 1660 $bytes = (int) $value; 1661 1662 if ( str_contains( $value, 'g' ) ) { 1663 $bytes *= GB_IN_BYTES; 1664 } elseif ( str_contains( $value, 'm' ) ) { 1665 $bytes *= MB_IN_BYTES; 1666 } elseif ( str_contains( $value, 'k' ) ) { 1667 $bytes *= KB_IN_BYTES; 1668 } 1669 1670 // Deal with large (float) values which run into the maximum integer size. 1671 return min( $bytes, PHP_INT_MAX ); 1672 } 1673 1674 /** 1675 * Determines whether a PHP ini value is changeable at runtime. 1676 * 1677 * @since 4.6.0 1678 * 1679 * @link https://www.php.net/manual/en/function.ini-get-all.php 1680 * 1681 * @param string $setting The name of the ini setting to check. 1682 * @return bool True if the value is changeable at runtime. False otherwise. 1683 */ 1684 function wp_is_ini_value_changeable( $setting ) { 1685 static $ini_all; 1686 1687 if ( ! isset( $ini_all ) ) { 1688 $ini_all = false; 1689 // Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes". 1690 if ( function_exists( 'ini_get_all' ) ) { 1691 $ini_all = ini_get_all(); 1692 } 1693 } 1694 1695 if ( isset( $ini_all[ $setting ]['access'] ) 1696 && ( INI_ALL === $ini_all[ $setting ]['access'] || INI_USER === $ini_all[ $setting ]['access'] ) 1697 ) { 1698 return true; 1699 } 1700 1701 // If we were unable to retrieve the details, fail gracefully to assume it's changeable. 1702 if ( ! is_array( $ini_all ) ) { 1703 return true; 1704 } 1705 1706 return false; 1707 } 1708 1709 /** 1710 * Determines whether the current request is a WordPress Ajax request. 1711 * 1712 * @since 4.7.0 1713 * 1714 * @return bool True if it's a WordPress Ajax request, false otherwise. 1715 */ 1716 function wp_doing_ajax() { 1717 /** 1718 * Filters whether the current request is a WordPress Ajax request. 1719 * 1720 * @since 4.7.0 1721 * 1722 * @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request. 1723 */ 1724 return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX ); 1725 } 1726 1727 /** 1728 * Determines whether the current request should use themes. 1729 * 1730 * @since 5.1.0 1731 * 1732 * @return bool True if themes should be used, false otherwise. 1733 */ 1734 function wp_using_themes() { 1735 /** 1736 * Filters whether the current request should use themes. 1737 * 1738 * @since 5.1.0 1739 * 1740 * @param bool $wp_using_themes Whether the current request should use themes. 1741 */ 1742 return apply_filters( 'wp_using_themes', defined( 'WP_USE_THEMES' ) && WP_USE_THEMES ); 1743 } 1744 1745 /** 1746 * Determines whether the current request is a WordPress cron request. 1747 * 1748 * @since 4.8.0 1749 * 1750 * @return bool True if it's a WordPress cron request, false otherwise. 1751 */ 1752 function wp_doing_cron() { 1753 /** 1754 * Filters whether the current request is a WordPress cron request. 1755 * 1756 * @since 4.8.0 1757 * 1758 * @param bool $wp_doing_cron Whether the current request is a WordPress cron request. 1759 */ 1760 return apply_filters( 'wp_doing_cron', defined( 'DOING_CRON' ) && DOING_CRON ); 1761 } 1762 1763 /** 1764 * Checks whether the given variable is a WordPress Error. 1765 * 1766 * Returns whether `$thing` is an instance of the `WP_Error` class. 1767 * 1768 * @since 2.1.0 1769 * 1770 * @param mixed $thing The variable to check. 1771 * @return bool Whether the variable is an instance of WP_Error. 1772 */ 1773 function is_wp_error( $thing ) { 1774 $is_wp_error = ( $thing instanceof WP_Error ); 1775 1776 if ( $is_wp_error ) { 1777 /** 1778 * Fires when `is_wp_error()` is called and its parameter is an instance of `WP_Error`. 1779 * 1780 * @since 5.6.0 1781 * 1782 * @param WP_Error $thing The error object passed to `is_wp_error()`. 1783 */ 1784 do_action( 'is_wp_error_instance', $thing ); 1785 } 1786 1787 return $is_wp_error; 1788 } 1789 1790 /** 1791 * Determines whether file modifications are allowed. 1792 * 1793 * @since 4.8.0 1794 * 1795 * @param string $context The usage context. 1796 * @return bool True if file modification is allowed, false otherwise. 1797 */ 1798 function wp_is_file_mod_allowed( $context ) { 1799 /** 1800 * Filters whether file modifications are allowed. 1801 * 1802 * @since 4.8.0 1803 * 1804 * @param bool $file_mod_allowed Whether file modifications are allowed. 1805 * @param string $context The usage context. 1806 */ 1807 return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) || ! DISALLOW_FILE_MODS, $context ); 1808 } 1809 1810 /** 1811 * Starts scraping edited file errors. 1812 * 1813 * @since 4.9.0 1814 */ 1815 function wp_start_scraping_edited_file_errors() { 1816 if ( ! isset( $_REQUEST['wp_scrape_key'] ) || ! isset( $_REQUEST['wp_scrape_nonce'] ) ) { 1817 return; 1818 } 1819 1820 $key = substr( sanitize_key( wp_unslash( $_REQUEST['wp_scrape_key'] ) ), 0, 32 ); 1821 $nonce = wp_unslash( $_REQUEST['wp_scrape_nonce'] ); 1822 if ( empty( $key ) || empty( $nonce ) ) { 1823 return; 1824 } 1825 1826 $transient = get_transient( 'scrape_key_' . $key ); 1827 if ( false === $transient ) { 1828 return; 1829 } 1830 1831 if ( $transient !== $nonce ) { 1832 if ( ! headers_sent() ) { 1833 header( 'X-Robots-Tag: noindex' ); 1834 nocache_headers(); 1835 } 1836 echo "###### wp_scraping_result_start:$key ######"; 1837 echo wp_json_encode( 1838 array( 1839 'code' => 'scrape_nonce_failure', 1840 'message' => __( 'Scrape key check failed. Please try again.' ), 1841 ) 1842 ); 1843 echo "###### wp_scraping_result_end:$key ######"; 1844 die(); 1845 } 1846 1847 if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) { 1848 define( 'WP_SANDBOX_SCRAPING', true ); 1849 } 1850 1851 register_shutdown_function( 'wp_finalize_scraping_edited_file_errors', $key ); 1852 } 1853 1854 /** 1855 * Finalizes scraping for edited file errors. 1856 * 1857 * @since 4.9.0 1858 * 1859 * @param string $scrape_key Scrape key. 1860 */ 1861 function wp_finalize_scraping_edited_file_errors( $scrape_key ) { 1862 $error = error_get_last(); 1863 1864 echo "\n###### wp_scraping_result_start:$scrape_key ######\n"; 1865 1866 if ( ! empty( $error ) 1867 && in_array( $error['type'], array( E_CORE_ERROR, E_COMPILE_ERROR, E_ERROR, E_PARSE, E_USER_ERROR, E_RECOVERABLE_ERROR ), true ) 1868 ) { 1869 $error = str_replace( ABSPATH, '', $error ); 1870 echo wp_json_encode( $error ); 1871 } else { 1872 echo wp_json_encode( true ); 1873 } 1874 1875 echo "\n###### wp_scraping_result_end:$scrape_key ######\n"; 1876 } 1877 1878 /** 1879 * Checks whether current request is a JSON request, or is expecting a JSON response. 1880 * 1881 * @since 5.0.0 1882 * 1883 * @return bool True if `Accepts` or `Content-Type` headers contain `application/json`. 1884 * False otherwise. 1885 */ 1886 function wp_is_json_request() { 1887 if ( isset( $_SERVER['HTTP_ACCEPT'] ) && wp_is_json_media_type( $_SERVER['HTTP_ACCEPT'] ) ) { 1888 return true; 1889 } 1890 1891 if ( isset( $_SERVER['CONTENT_TYPE'] ) && wp_is_json_media_type( $_SERVER['CONTENT_TYPE'] ) ) { 1892 return true; 1893 } 1894 1895 return false; 1896 } 1897 1898 /** 1899 * Checks whether current request is a JSONP request, or is expecting a JSONP response. 1900 * 1901 * @since 5.2.0 1902 * 1903 * @return bool True if JSONP request, false otherwise. 1904 */ 1905 function wp_is_jsonp_request() { 1906 if ( ! isset( $_GET['_jsonp'] ) ) { 1907 return false; 1908 } 1909 1910 if ( ! function_exists( 'wp_check_jsonp_callback' ) ) { 1911 require_once ABSPATH . WPINC . '/functions.php'; 1912 } 1913 1914 $jsonp_callback = $_GET['_jsonp']; 1915 if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) { 1916 return false; 1917 } 1918 1919 /** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */ 1920 $jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true ); 1921 1922 return $jsonp_enabled; 1923 } 1924 1925 /** 1926 * Checks whether a string is a valid JSON Media Type. 1927 * 1928 * @since 5.6.0 1929 * 1930 * @param string $media_type A Media Type string to check. 1931 * @return bool True if string is a valid JSON Media Type. 1932 */ 1933 function wp_is_json_media_type( $media_type ) { 1934 static $cache = array(); 1935 1936 if ( ! isset( $cache[ $media_type ] ) ) { 1937 $cache[ $media_type ] = (bool) preg_match( '/(^|\s|,)application\/([\w!#\$&-\^\.\+]+\+)?json(\+oembed)?($|\s|;|,)/i', $media_type ); 1938 } 1939 1940 return $cache[ $media_type ]; 1941 } 1942 1943 /** 1944 * Checks whether current request is an XML request, or is expecting an XML response. 1945 * 1946 * @since 5.2.0 1947 * 1948 * @return bool True if `Accepts` or `Content-Type` headers contain `text/xml` 1949 * or one of the related MIME types. False otherwise. 1950 */ 1951 function wp_is_xml_request() { 1952 $accepted = array( 1953 'text/xml', 1954 'application/rss+xml', 1955 'application/atom+xml', 1956 'application/rdf+xml', 1957 'text/xml+oembed', 1958 'application/xml+oembed', 1959 ); 1960 1961 if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) { 1962 foreach ( $accepted as $type ) { 1963 if ( str_contains( $_SERVER['HTTP_ACCEPT'], $type ) ) { 1964 return true; 1965 } 1966 } 1967 } 1968 1969 if ( isset( $_SERVER['CONTENT_TYPE'] ) && in_array( $_SERVER['CONTENT_TYPE'], $accepted, true ) ) { 1970 return true; 1971 } 1972 1973 return false; 1974 } 1975 1976 /** 1977 * Checks if this site is protected by HTTP Basic Auth. 1978 * 1979 * At the moment, this merely checks for the present of Basic Auth credentials. Therefore, calling 1980 * this function with a context different from the current context may give inaccurate results. 1981 * In a future release, this evaluation may be made more robust. 1982 * 1983 * Currently, this is only used by Application Passwords to prevent a conflict since it also utilizes 1984 * Basic Auth. 1985 * 1986 * @since 5.6.1 1987 * 1988 * @global string $pagenow The filename of the current screen. 1989 * 1990 * @param string $context The context to check for protection. Accepts 'login', 'admin', and 'front'. 1991 * Defaults to the current context. 1992 * @return bool Whether the site is protected by Basic Auth. 1993 */ 1994 function wp_is_site_protected_by_basic_auth( $context = '' ) { 1995 global $pagenow; 1996 1997 if ( ! $context ) { 1998 if ( 'wp-login.php' === $pagenow ) { 1999 $context = 'login'; 2000 } elseif ( is_admin() ) { 2001 $context = 'admin'; 2002 } else { 2003 $context = 'front'; 2004 } 2005 } 2006 2007 $is_protected = ! empty( $_SERVER['PHP_AUTH_USER'] ) || ! empty( $_SERVER['PHP_AUTH_PW'] ); 2008 2009 /** 2010 * Filters whether a site is protected by HTTP Basic Auth. 2011 * 2012 * @since 5.6.1 2013 * 2014 * @param bool $is_protected Whether the site is protected by Basic Auth. 2015 * @param string $context The context to check for protection. One of 'login', 'admin', or 'front'. 2016 */ 2017 return apply_filters( 'wp_is_site_protected_by_basic_auth', $is_protected, $context ); 2018 }
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| Generated : Sat Nov 23 08:20:01 2024 | Cross-referenced by PHPXref |