function wp_doing_cron() {
* Filters whether the current request is a WordPress cron request.
* @param bool $wp_doing_cron Whether the current request is a WordPress cron request.
return apply_filters( 'wp_doing_cron', defined( 'DOING_CRON' ) && DOING_CRON );
* Checks whether the given variable is a WordPress Error.
* Returns whether `$thing` is an instance of the `WP_Error` class.
* @param mixed $thing The variable to check.
* @return bool Whether the variable is an instance of WP_Error.
function is_wp_error( $thing ) {
$is_wp_error = ( $thing instanceof WP_Error );
* Fires when `is_wp_error()` is called and its parameter is an instance of `WP_Error`.
* @param WP_Error $thing The error object passed to `is_wp_error()`.
do_action( 'is_wp_error_instance', $thing );
* Determines whether file modifications are allowed.
* @param string $context The usage context.
* @return bool True if file modification is allowed, false otherwise.
function wp_is_file_mod_allowed( $context ) {
* Filters whether file modifications are allowed.
* @param bool $file_mod_allowed Whether file modifications are allowed.
* @param string $context The usage context.
return apply_filters( 'file_mod_allowed', ! defined( 'DISALLOW_FILE_MODS' ) || ! DISALLOW_FILE_MODS, $context );
* Start scraping edited file errors.
function wp_start_scraping_edited_file_errors() {
if ( ! isset( $_REQUEST['wp_scrape_key'] ) || ! isset( $_REQUEST['wp_scrape_nonce'] ) ) {
$key = substr( sanitize_key( wp_unslash( $_REQUEST['wp_scrape_key'] ) ), 0, 32 );
$nonce = wp_unslash( $_REQUEST['wp_scrape_nonce'] );
if ( get_transient( 'scrape_key_' . $key ) !== $nonce ) {
echo "###### wp_scraping_result_start:$key ######";
'code' => 'scrape_nonce_failure',
'message' => __( 'Scrape nonce check failed. Please try again.' ),
echo "###### wp_scraping_result_end:$key ######";
if ( ! defined( 'WP_SANDBOX_SCRAPING' ) ) {
define( 'WP_SANDBOX_SCRAPING', true );
register_shutdown_function( 'wp_finalize_scraping_edited_file_errors', $key );
* Finalize scraping for edited file errors.
* @param string $scrape_key Scrape key.
function wp_finalize_scraping_edited_file_errors( $scrape_key ) {
$error = error_get_last();
echo "\n###### wp_scraping_result_start:$scrape_key ######\n";
if ( ! empty( $error ) && in_array( $error['type'], array( E_CORE_ERROR, E_COMPILE_ERROR, E_ERROR, E_PARSE, E_USER_ERROR, E_RECOVERABLE_ERROR ), true ) ) {
$error = str_replace( ABSPATH, '', $error );
echo wp_json_encode( $error );
echo wp_json_encode( true );
echo "\n###### wp_scraping_result_end:$scrape_key ######\n";
* Checks whether current request is a JSON request, or is expecting a JSON response.
* @return bool True if `Accepts` or `Content-Type` headers contain `application/json`.
function wp_is_json_request() {
if ( isset( $_SERVER['HTTP_ACCEPT'] ) && wp_is_json_media_type( $_SERVER['HTTP_ACCEPT'] ) ) {
if ( isset( $_SERVER['CONTENT_TYPE'] ) && wp_is_json_media_type( $_SERVER['CONTENT_TYPE'] ) ) {
* Checks whether current request is a JSONP request, or is expecting a JSONP response.
* @return bool True if JSONP request, false otherwise.
function wp_is_jsonp_request() {
if ( ! isset( $_GET['_jsonp'] ) ) {
if ( ! function_exists( 'wp_check_jsonp_callback' ) ) {
require_once ABSPATH . WPINC . '/functions.php';
$jsonp_callback = $_GET['_jsonp'];
if ( ! wp_check_jsonp_callback( $jsonp_callback ) ) {
/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */
$jsonp_enabled = apply_filters( 'rest_jsonp_enabled', true );
* Checks whether a string is a valid JSON Media Type.
* @param string $media_type A Media Type string to check.
* @return bool True if string is a valid JSON Media Type.
function wp_is_json_media_type( $media_type ) {
if ( ! isset( $cache[ $media_type ] ) ) {
$cache[ $media_type ] = (bool) preg_match( '/(^|\s|,)application\/([\w!#\$&-\^\.\+]+\+)?json(\+oembed)?($|\s|;|,)/i', $media_type );
return $cache[ $media_type ];
* Checks whether current request is an XML request, or is expecting an XML response.
* @return bool True if `Accepts` or `Content-Type` headers contain `text/xml`
* or one of the related MIME types. False otherwise.
function wp_is_xml_request() {
'application/xml+oembed',
if ( isset( $_SERVER['HTTP_ACCEPT'] ) ) {
foreach ( $accepted as $type ) {
if ( false !== strpos( $_SERVER['HTTP_ACCEPT'], $type ) ) {
if ( isset( $_SERVER['CONTENT_TYPE'] ) && in_array( $_SERVER['CONTENT_TYPE'], $accepted, true ) ) {
* Checks if this site is protected by HTTP Basic Auth.
* At the moment, this merely checks for the present of Basic Auth credentials. Therefore, calling
* this function with a context different from the current context may give inaccurate results.
* In a future release, this evaluation may be made more robust.
* Currently, this is only used by Application Passwords to prevent a conflict since it also utilizes
* @global string $pagenow The current page.
* @param string $context The context to check for protection. Accepts 'login', 'admin', and 'front'.
* Defaults to the current context.
* @return bool Whether the site is protected by Basic Auth.
function wp_is_site_protected_by_basic_auth( $context = '' ) {
if ( 'wp-login.php' === $pagenow ) {
} elseif ( is_admin() ) {
$is_protected = ! empty( $_SERVER['PHP_AUTH_USER'] ) || ! empty( $_SERVER['PHP_AUTH_PW'] );
* Filters whether a site is protected by HTTP Basic Auth.
* @param bool $is_protected Whether the site is protected by Basic Auth.
* @param string $context The context to check for protection. One of 'login', 'admin', or 'front'.
return apply_filters( 'wp_is_site_protected_by_basic_auth', $is_protected, $context );
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
