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1 <?php 2 /** 3 * Core HTTP Request API 4 * 5 * Standardizes the HTTP requests for WordPress. Handles cookies, gzip encoding and decoding, chunk 6 * decoding, if HTTP 1.1 and various other difficult HTTP protocol implementations. 7 * 8 * @package WordPress 9 * @subpackage HTTP 10 */ 11 12 /** 13 * Returns the initialized WP_Http Object 14 * 15 * @since 2.7.0 16 * @access private 17 * 18 * @return WP_Http HTTP Transport object. 19 */ 20 function _wp_http_get_object() { 21 static $http = null; 22 23 if ( is_null( $http ) ) { 24 $http = new WP_Http(); 25 } 26 return $http; 27 } 28 29 /** 30 * Retrieve the raw response from a safe HTTP request. 31 * 32 * This function is ideal when the HTTP request is being made to an arbitrary 33 * URL. The URL is validated to avoid redirection and request forgery attacks. 34 * 35 * @since 3.6.0 36 * 37 * @see wp_remote_request() For more information on the response array format. 38 * @see WP_Http::request() For default arguments information. 39 * 40 * @param string $url URL to retrieve. 41 * @param array $args Optional. Request arguments. Default empty array. 42 * @return array|WP_Error The response or WP_Error on failure. 43 */ 44 function wp_safe_remote_request( $url, $args = array() ) { 45 $args['reject_unsafe_urls'] = true; 46 $http = _wp_http_get_object(); 47 return $http->request( $url, $args ); 48 } 49 50 /** 51 * Retrieve the raw response from a safe HTTP request using the GET method. 52 * 53 * This function is ideal when the HTTP request is being made to an arbitrary 54 * URL. The URL is validated to avoid redirection and request forgery attacks. 55 * 56 * @since 3.6.0 57 * 58 * @see wp_remote_request() For more information on the response array format. 59 * @see WP_Http::request() For default arguments information. 60 * 61 * @param string $url URL to retrieve. 62 * @param array $args Optional. Request arguments. Default empty array. 63 * @return array|WP_Error The response or WP_Error on failure. 64 */ 65 function wp_safe_remote_get( $url, $args = array() ) { 66 $args['reject_unsafe_urls'] = true; 67 $http = _wp_http_get_object(); 68 return $http->get( $url, $args ); 69 } 70 71 /** 72 * Retrieve the raw response from a safe HTTP request using the POST method. 73 * 74 * This function is ideal when the HTTP request is being made to an arbitrary 75 * URL. The URL is validated to avoid redirection and request forgery attacks. 76 * 77 * @since 3.6.0 78 * 79 * @see wp_remote_request() For more information on the response array format. 80 * @see WP_Http::request() For default arguments information. 81 * 82 * @param string $url URL to retrieve. 83 * @param array $args Optional. Request arguments. Default empty array. 84 * @return array|WP_Error The response or WP_Error on failure. 85 */ 86 function wp_safe_remote_post( $url, $args = array() ) { 87 $args['reject_unsafe_urls'] = true; 88 $http = _wp_http_get_object(); 89 return $http->post( $url, $args ); 90 } 91 92 /** 93 * Retrieve the raw response from a safe HTTP request using the HEAD method. 94 * 95 * This function is ideal when the HTTP request is being made to an arbitrary 96 * URL. The URL is validated to avoid redirection and request forgery attacks. 97 * 98 * @since 3.6.0 99 * 100 * @see wp_remote_request() For more information on the response array format. 101 * @see WP_Http::request() For default arguments information. 102 * 103 * @param string $url URL to retrieve. 104 * @param array $args Optional. Request arguments. Default empty array. 105 * @return array|WP_Error The response or WP_Error on failure. 106 */ 107 function wp_safe_remote_head( $url, $args = array() ) { 108 $args['reject_unsafe_urls'] = true; 109 $http = _wp_http_get_object(); 110 return $http->head( $url, $args ); 111 } 112 113 /** 114 * Performs an HTTP request and returns its response. 115 * 116 * There are other API functions available which abstract away the HTTP method: 117 * 118 * - Default 'GET' for wp_remote_get() 119 * - Default 'POST' for wp_remote_post() 120 * - Default 'HEAD' for wp_remote_head() 121 * 122 * @since 2.7.0 123 * 124 * @see WP_Http::request() For information on default arguments. 125 * 126 * @param string $url URL to retrieve. 127 * @param array $args Optional. Request arguments. Default empty array. 128 * @return array|WP_Error { 129 * The response array or a WP_Error on failure. 130 * 131 * @type string[] $headers Array of response headers keyed by their name. 132 * @type string $body Response body. 133 * @type array $response { 134 * Data about the HTTP response. 135 * 136 * @type int|false $code HTTP response code. 137 * @type string|false $message HTTP response message. 138 * } 139 * @type WP_HTTP_Cookie[] $cookies Array of response cookies. 140 * @type WP_HTTP_Requests_Response|null $http_response Raw HTTP response object. 141 * } 142 */ 143 function wp_remote_request( $url, $args = array() ) { 144 $http = _wp_http_get_object(); 145 return $http->request( $url, $args ); 146 } 147 148 /** 149 * Performs an HTTP request using the GET method and returns its response. 150 * 151 * @since 2.7.0 152 * 153 * @see wp_remote_request() For more information on the response array format. 154 * @see WP_Http::request() For default arguments information. 155 * 156 * @param string $url URL to retrieve. 157 * @param array $args Optional. Request arguments. Default empty array. 158 * @return array|WP_Error The response or WP_Error on failure. 159 */ 160 function wp_remote_get( $url, $args = array() ) { 161 $http = _wp_http_get_object(); 162 return $http->get( $url, $args ); 163 } 164 165 /** 166 * Performs an HTTP request using the POST method and returns its response. 167 * 168 * @since 2.7.0 169 * 170 * @see wp_remote_request() For more information on the response array format. 171 * @see WP_Http::request() For default arguments information. 172 * 173 * @param string $url URL to retrieve. 174 * @param array $args Optional. Request arguments. Default empty array. 175 * @return array|WP_Error The response or WP_Error on failure. 176 */ 177 function wp_remote_post( $url, $args = array() ) { 178 $http = _wp_http_get_object(); 179 return $http->post( $url, $args ); 180 } 181 182 /** 183 * Performs an HTTP request using the HEAD method and returns its response. 184 * 185 * @since 2.7.0 186 * 187 * @see wp_remote_request() For more information on the response array format. 188 * @see WP_Http::request() For default arguments information. 189 * 190 * @param string $url URL to retrieve. 191 * @param array $args Optional. Request arguments. Default empty array. 192 * @return array|WP_Error The response or WP_Error on failure. 193 */ 194 function wp_remote_head( $url, $args = array() ) { 195 $http = _wp_http_get_object(); 196 return $http->head( $url, $args ); 197 } 198 199 /** 200 * Retrieve only the headers from the raw response. 201 * 202 * @since 2.7.0 203 * @since 4.6.0 Return value changed from an array to an Requests_Utility_CaseInsensitiveDictionary instance. 204 * 205 * @see \Requests_Utility_CaseInsensitiveDictionary 206 * 207 * @param array|WP_Error $response HTTP response. 208 * @return array|\Requests_Utility_CaseInsensitiveDictionary The headers of the response. Empty array if incorrect parameter given. 209 */ 210 function wp_remote_retrieve_headers( $response ) { 211 if ( is_wp_error( $response ) || ! isset( $response['headers'] ) ) { 212 return array(); 213 } 214 215 return $response['headers']; 216 } 217 218 /** 219 * Retrieve a single header by name from the raw response. 220 * 221 * @since 2.7.0 222 * 223 * @param array|WP_Error $response HTTP response. 224 * @param string $header Header name to retrieve value from. 225 * @return array|string The header(s) value(s). Array if multiple headers with the same name are retrieved. 226 * Empty string if incorrect parameter given, or if the header doesn't exist. 227 */ 228 function wp_remote_retrieve_header( $response, $header ) { 229 if ( is_wp_error( $response ) || ! isset( $response['headers'] ) ) { 230 return ''; 231 } 232 233 if ( isset( $response['headers'][ $header ] ) ) { 234 return $response['headers'][ $header ]; 235 } 236 237 return ''; 238 } 239 240 /** 241 * Retrieve only the response code from the raw response. 242 * 243 * Will return an empty string if incorrect parameter value is given. 244 * 245 * @since 2.7.0 246 * 247 * @param array|WP_Error $response HTTP response. 248 * @return int|string The response code as an integer. Empty string on incorrect parameter given. 249 */ 250 function wp_remote_retrieve_response_code( $response ) { 251 if ( is_wp_error( $response ) || ! isset( $response['response'] ) || ! is_array( $response['response'] ) ) { 252 return ''; 253 } 254 255 return $response['response']['code']; 256 } 257 258 /** 259 * Retrieve only the response message from the raw response. 260 * 261 * Will return an empty string if incorrect parameter value is given. 262 * 263 * @since 2.7.0 264 * 265 * @param array|WP_Error $response HTTP response. 266 * @return string The response message. Empty string on incorrect parameter given. 267 */ 268 function wp_remote_retrieve_response_message( $response ) { 269 if ( is_wp_error( $response ) || ! isset( $response['response'] ) || ! is_array( $response['response'] ) ) { 270 return ''; 271 } 272 273 return $response['response']['message']; 274 } 275 276 /** 277 * Retrieve only the body from the raw response. 278 * 279 * @since 2.7.0 280 * 281 * @param array|WP_Error $response HTTP response. 282 * @return string The body of the response. Empty string if no body or incorrect parameter given. 283 */ 284 function wp_remote_retrieve_body( $response ) { 285 if ( is_wp_error( $response ) || ! isset( $response['body'] ) ) { 286 return ''; 287 } 288 289 return $response['body']; 290 } 291 292 /** 293 * Retrieve only the cookies from the raw response. 294 * 295 * @since 4.4.0 296 * 297 * @param array|WP_Error $response HTTP response. 298 * @return WP_Http_Cookie[] An array of `WP_Http_Cookie` objects from the response. Empty array if there are none, or the response is a WP_Error. 299 */ 300 function wp_remote_retrieve_cookies( $response ) { 301 if ( is_wp_error( $response ) || empty( $response['cookies'] ) ) { 302 return array(); 303 } 304 305 return $response['cookies']; 306 } 307 308 /** 309 * Retrieve a single cookie by name from the raw response. 310 * 311 * @since 4.4.0 312 * 313 * @param array|WP_Error $response HTTP response. 314 * @param string $name The name of the cookie to retrieve. 315 * @return WP_Http_Cookie|string The `WP_Http_Cookie` object. Empty string if the cookie isn't present in the response. 316 */ 317 function wp_remote_retrieve_cookie( $response, $name ) { 318 $cookies = wp_remote_retrieve_cookies( $response ); 319 320 if ( empty( $cookies ) ) { 321 return ''; 322 } 323 324 foreach ( $cookies as $cookie ) { 325 if ( $cookie->name === $name ) { 326 return $cookie; 327 } 328 } 329 330 return ''; 331 } 332 333 /** 334 * Retrieve a single cookie's value by name from the raw response. 335 * 336 * @since 4.4.0 337 * 338 * @param array|WP_Error $response HTTP response. 339 * @param string $name The name of the cookie to retrieve. 340 * @return string The value of the cookie. Empty string if the cookie isn't present in the response. 341 */ 342 function wp_remote_retrieve_cookie_value( $response, $name ) { 343 $cookie = wp_remote_retrieve_cookie( $response, $name ); 344 345 if ( ! is_a( $cookie, 'WP_Http_Cookie' ) ) { 346 return ''; 347 } 348 349 return $cookie->value; 350 } 351 352 /** 353 * Determines if there is an HTTP Transport that can process this request. 354 * 355 * @since 3.2.0 356 * 357 * @param array $capabilities Array of capabilities to test or a wp_remote_request() $args array. 358 * @param string $url Optional. If given, will check if the URL requires SSL and adds 359 * that requirement to the capabilities array. 360 * 361 * @return bool 362 */ 363 function wp_http_supports( $capabilities = array(), $url = null ) { 364 $http = _wp_http_get_object(); 365 366 $capabilities = wp_parse_args( $capabilities ); 367 368 $count = count( $capabilities ); 369 370 // If we have a numeric $capabilities array, spoof a wp_remote_request() associative $args array. 371 if ( $count && count( array_filter( array_keys( $capabilities ), 'is_numeric' ) ) == $count ) { 372 $capabilities = array_combine( array_values( $capabilities ), array_fill( 0, $count, true ) ); 373 } 374 375 if ( $url && ! isset( $capabilities['ssl'] ) ) { 376 $scheme = parse_url( $url, PHP_URL_SCHEME ); 377 if ( 'https' === $scheme || 'ssl' === $scheme ) { 378 $capabilities['ssl'] = true; 379 } 380 } 381 382 return (bool) $http->_get_first_available_transport( $capabilities ); 383 } 384 385 /** 386 * Get the HTTP Origin of the current request. 387 * 388 * @since 3.4.0 389 * 390 * @return string URL of the origin. Empty string if no origin. 391 */ 392 function get_http_origin() { 393 $origin = ''; 394 if ( ! empty( $_SERVER['HTTP_ORIGIN'] ) ) { 395 $origin = $_SERVER['HTTP_ORIGIN']; 396 } 397 398 /** 399 * Change the origin of an HTTP request. 400 * 401 * @since 3.4.0 402 * 403 * @param string $origin The original origin for the request. 404 */ 405 return apply_filters( 'http_origin', $origin ); 406 } 407 408 /** 409 * Retrieve list of allowed HTTP origins. 410 * 411 * @since 3.4.0 412 * 413 * @return string[] Array of origin URLs. 414 */ 415 function get_allowed_http_origins() { 416 $admin_origin = parse_url( admin_url() ); 417 $home_origin = parse_url( home_url() ); 418 419 // @todo Preserve port? 420 $allowed_origins = array_unique( 421 array( 422 'http://' . $admin_origin['host'], 423 'https://' . $admin_origin['host'], 424 'http://' . $home_origin['host'], 425 'https://' . $home_origin['host'], 426 ) 427 ); 428 429 /** 430 * Change the origin types allowed for HTTP requests. 431 * 432 * @since 3.4.0 433 * 434 * @param string[] $allowed_origins { 435 * Array of default allowed HTTP origins. 436 * 437 * @type string $0 Non-secure URL for admin origin. 438 * @type string $1 Secure URL for admin origin. 439 * @type string $2 Non-secure URL for home origin. 440 * @type string $3 Secure URL for home origin. 441 * } 442 */ 443 return apply_filters( 'allowed_http_origins', $allowed_origins ); 444 } 445 446 /** 447 * Determines if the HTTP origin is an authorized one. 448 * 449 * @since 3.4.0 450 * 451 * @param null|string $origin Origin URL. If not provided, the value of get_http_origin() is used. 452 * @return string Origin URL if allowed, empty string if not. 453 */ 454 function is_allowed_http_origin( $origin = null ) { 455 $origin_arg = $origin; 456 457 if ( null === $origin ) { 458 $origin = get_http_origin(); 459 } 460 461 if ( $origin && ! in_array( $origin, get_allowed_http_origins(), true ) ) { 462 $origin = ''; 463 } 464 465 /** 466 * Change the allowed HTTP origin result. 467 * 468 * @since 3.4.0 469 * 470 * @param string $origin Origin URL if allowed, empty string if not. 471 * @param string $origin_arg Original origin string passed into is_allowed_http_origin function. 472 */ 473 return apply_filters( 'allowed_http_origin', $origin, $origin_arg ); 474 } 475 476 /** 477 * Send Access-Control-Allow-Origin and related headers if the current request 478 * is from an allowed origin. 479 * 480 * If the request is an OPTIONS request, the script exits with either access 481 * control headers sent, or a 403 response if the origin is not allowed. For 482 * other request methods, you will receive a return value. 483 * 484 * @since 3.4.0 485 * 486 * @return string|false Returns the origin URL if headers are sent. Returns false 487 * if headers are not sent. 488 */ 489 function send_origin_headers() { 490 $origin = get_http_origin(); 491 492 if ( is_allowed_http_origin( $origin ) ) { 493 header( 'Access-Control-Allow-Origin: ' . $origin ); 494 header( 'Access-Control-Allow-Credentials: true' ); 495 if ( 'OPTIONS' === $_SERVER['REQUEST_METHOD'] ) { 496 exit; 497 } 498 return $origin; 499 } 500 501 if ( 'OPTIONS' === $_SERVER['REQUEST_METHOD'] ) { 502 status_header( 403 ); 503 exit; 504 } 505 506 return false; 507 } 508 509 /** 510 * Validate a URL for safe use in the HTTP API. 511 * 512 * @since 3.5.2 513 * 514 * @param string $url Request URL. 515 * @return string|false URL or false on failure. 516 */ 517 function wp_http_validate_url( $url ) { 518 if ( ! is_string( $url ) || '' === $url || is_numeric( $url ) ) { 519 return false; 520 } 521 522 $original_url = $url; 523 $url = wp_kses_bad_protocol( $url, array( 'http', 'https' ) ); 524 if ( ! $url || strtolower( $url ) !== strtolower( $original_url ) ) { 525 return false; 526 } 527 528 $parsed_url = parse_url( $url ); 529 if ( ! $parsed_url || empty( $parsed_url['host'] ) ) { 530 return false; 531 } 532 533 if ( isset( $parsed_url['user'] ) || isset( $parsed_url['pass'] ) ) { 534 return false; 535 } 536 537 if ( false !== strpbrk( $parsed_url['host'], ':#?[]' ) ) { 538 return false; 539 } 540 541 $parsed_home = parse_url( get_option( 'home' ) ); 542 $same_host = isset( $parsed_home['host'] ) && strtolower( $parsed_home['host'] ) === strtolower( $parsed_url['host'] ); 543 $host = trim( $parsed_url['host'], '.' ); 544 545 if ( ! $same_host ) { 546 if ( preg_match( '#^(([1-9]?\d|1\d\d|25[0-5]|2[0-4]\d)\.){3}([1-9]?\d|1\d\d|25[0-5]|2[0-4]\d)$#', $host ) ) { 547 $ip = $host; 548 } else { 549 $ip = gethostbyname( $host ); 550 if ( $ip === $host ) { // Error condition for gethostbyname(). 551 return false; 552 } 553 } 554 if ( $ip ) { 555 $parts = array_map( 'intval', explode( '.', $ip ) ); 556 if ( 127 === $parts[0] || 10 === $parts[0] || 0 === $parts[0] 557 || ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] ) 558 || ( 192 === $parts[0] && 168 === $parts[1] ) 559 ) { 560 // If host appears local, reject unless specifically allowed. 561 /** 562 * Check if HTTP request is external or not. 563 * 564 * Allows to change and allow external requests for the HTTP request. 565 * 566 * @since 3.6.0 567 * 568 * @param bool $external Whether HTTP request is external or not. 569 * @param string $host Host name of the requested URL. 570 * @param string $url Requested URL. 571 */ 572 if ( ! apply_filters( 'http_request_host_is_external', false, $host, $url ) ) { 573 return false; 574 } 575 } 576 } 577 } 578 579 if ( empty( $parsed_url['port'] ) ) { 580 return $url; 581 } 582 583 $port = $parsed_url['port']; 584 585 /** 586 * Controls the list of ports considered safe in HTTP API. 587 * 588 * Allows to change and allow external requests for the HTTP request. 589 * 590 * @since 5.9.0 591 * 592 * @param array $allowed_ports Array of integers for valid ports. 593 * @param string $host Host name of the requested URL. 594 * @param string $url Requested URL. 595 */ 596 $allowed_ports = apply_filters( 'http_allowed_safe_ports', array( 80, 443, 8080 ), $host, $url ); 597 if ( is_array( $allowed_ports ) && in_array( $port, $allowed_ports, true ) ) { 598 return $url; 599 } 600 601 if ( $parsed_home && $same_host && isset( $parsed_home['port'] ) && $parsed_home['port'] === $port ) { 602 return $url; 603 } 604 605 return false; 606 } 607 608 /** 609 * Mark allowed redirect hosts safe for HTTP requests as well. 610 * 611 * Attached to the {@see 'http_request_host_is_external'} filter. 612 * 613 * @since 3.6.0 614 * 615 * @param bool $is_external 616 * @param string $host 617 * @return bool 618 */ 619 function allowed_http_request_hosts( $is_external, $host ) { 620 if ( ! $is_external && wp_validate_redirect( 'http://' . $host ) ) { 621 $is_external = true; 622 } 623 return $is_external; 624 } 625 626 /** 627 * Adds any domain in a multisite installation for safe HTTP requests to the 628 * allowed list. 629 * 630 * Attached to the {@see 'http_request_host_is_external'} filter. 631 * 632 * @since 3.6.0 633 * 634 * @global wpdb $wpdb WordPress database abstraction object. 635 * 636 * @param bool $is_external 637 * @param string $host 638 * @return bool 639 */ 640 function ms_allowed_http_request_hosts( $is_external, $host ) { 641 global $wpdb; 642 static $queried = array(); 643 if ( $is_external ) { 644 return $is_external; 645 } 646 if ( get_network()->domain === $host ) { 647 return true; 648 } 649 if ( isset( $queried[ $host ] ) ) { 650 return $queried[ $host ]; 651 } 652 $queried[ $host ] = (bool) $wpdb->get_var( $wpdb->prepare( "SELECT domain FROM $wpdb->blogs WHERE domain = %s LIMIT 1", $host ) ); 653 return $queried[ $host ]; 654 } 655 656 /** 657 * A wrapper for PHP's parse_url() function that handles consistency in the return values 658 * across PHP versions. 659 * 660 * PHP 5.4.7 expanded parse_url()'s ability to handle non-absolute URLs, including 661 * schemeless and relative URLs with "://" in the path. This function works around 662 * those limitations providing a standard output on PHP 5.2~5.4+. 663 * 664 * Secondly, across various PHP versions, schemeless URLs containing a ":" in the query 665 * are being handled inconsistently. This function works around those differences as well. 666 * 667 * @since 4.4.0 668 * @since 4.7.0 The `$component` parameter was added for parity with PHP's `parse_url()`. 669 * 670 * @link https://www.php.net/manual/en/function.parse-url.php 671 * 672 * @param string $url The URL to parse. 673 * @param int $component The specific component to retrieve. Use one of the PHP 674 * predefined constants to specify which one. 675 * Defaults to -1 (= return all parts as an array). 676 * @return mixed False on parse failure; Array of URL components on success; 677 * When a specific component has been requested: null if the component 678 * doesn't exist in the given URL; a string or - in the case of 679 * PHP_URL_PORT - integer when it does. See parse_url()'s return values. 680 */ 681 function wp_parse_url( $url, $component = -1 ) { 682 $to_unset = array(); 683 $url = (string) $url; 684 685 if ( '//' === substr( $url, 0, 2 ) ) { 686 $to_unset[] = 'scheme'; 687 $url = 'placeholder:' . $url; 688 } elseif ( '/' === substr( $url, 0, 1 ) ) { 689 $to_unset[] = 'scheme'; 690 $to_unset[] = 'host'; 691 $url = 'placeholder://placeholder' . $url; 692 } 693 694 $parts = parse_url( $url ); 695 696 if ( false === $parts ) { 697 // Parsing failure. 698 return $parts; 699 } 700 701 // Remove the placeholder values. 702 foreach ( $to_unset as $key ) { 703 unset( $parts[ $key ] ); 704 } 705 706 return _get_component_from_parsed_url_array( $parts, $component ); 707 } 708 709 /** 710 * Retrieve a specific component from a parsed URL array. 711 * 712 * @internal 713 * 714 * @since 4.7.0 715 * @access private 716 * 717 * @link https://www.php.net/manual/en/function.parse-url.php 718 * 719 * @param array|false $url_parts The parsed URL. Can be false if the URL failed to parse. 720 * @param int $component The specific component to retrieve. Use one of the PHP 721 * predefined constants to specify which one. 722 * Defaults to -1 (= return all parts as an array). 723 * @return mixed False on parse failure; Array of URL components on success; 724 * When a specific component has been requested: null if the component 725 * doesn't exist in the given URL; a string or - in the case of 726 * PHP_URL_PORT - integer when it does. See parse_url()'s return values. 727 */ 728 function _get_component_from_parsed_url_array( $url_parts, $component = -1 ) { 729 if ( -1 === $component ) { 730 return $url_parts; 731 } 732 733 $key = _wp_translate_php_url_constant_to_key( $component ); 734 if ( false !== $key && is_array( $url_parts ) && isset( $url_parts[ $key ] ) ) { 735 return $url_parts[ $key ]; 736 } else { 737 return null; 738 } 739 } 740 741 /** 742 * Translate a PHP_URL_* constant to the named array keys PHP uses. 743 * 744 * @internal 745 * 746 * @since 4.7.0 747 * @access private 748 * 749 * @link https://www.php.net/manual/en/url.constants.php 750 * 751 * @param int $constant PHP_URL_* constant. 752 * @return string|false The named key or false. 753 */ 754 function _wp_translate_php_url_constant_to_key( $constant ) { 755 $translation = array( 756 PHP_URL_SCHEME => 'scheme', 757 PHP_URL_HOST => 'host', 758 PHP_URL_PORT => 'port', 759 PHP_URL_USER => 'user', 760 PHP_URL_PASS => 'pass', 761 PHP_URL_PATH => 'path', 762 PHP_URL_QUERY => 'query', 763 PHP_URL_FRAGMENT => 'fragment', 764 ); 765 766 if ( isset( $translation[ $constant ] ) ) { 767 return $translation[ $constant ]; 768 } else { 769 return false; 770 } 771 }
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