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Name	Size	Permission	Date
ID3	[ DIR ]	drwxr-xr-x	2026-09-02 14:27
IXR	[ DIR ]	drwxr-xr-x	2026-09-02 21:15
PHPMailer	[ DIR ]	drwxr-xr-x	2026-09-02 12:24
Requests	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
SimplePie	[ DIR ]	drwxr-xr-x	2026-09-01 05:44
Text	[ DIR ]	drwxr-xr-x	2026-09-02 11:14
abilities-api	[ DIR ]	drwxr-xr-x	2026-09-02 10:29
ai-client	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
block-patterns	[ DIR ]	drwxr-xr-x	2026-09-02 09:43
block-supports	[ DIR ]	drwxr-xr-x	2026-09-01 16:34
blocks	[ DIR ]	drwxr-xr-x	2026-09-02 22:23
build	[ DIR ]	drwxr-xr-x	2026-09-01 05:55
certificates	[ DIR ]	drwxr-xr-x	2026-09-02 10:37
css	[ DIR ]	drwxr-xr-x	2026-09-02 09:43
customize	[ DIR ]	drwxr-xr-x	2026-09-01 22:00
fonts	[ DIR ]	drwxr-xr-x	2026-09-02 09:49
html-api	[ DIR ]	drwxr-xr-x	2026-09-02 11:18
images	[ DIR ]	drwxr-xr-x	2026-09-02 10:42
interactivity-api	[ DIR ]	drwxr-xr-x	2026-09-02 13:48
js	[ DIR ]	drwxr-xr-x	2026-09-02 12:23
l10n	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
php-ai-client	[ DIR ]	drwxr-xr-x	2026-09-01 06:11
php-compat	[ DIR ]	drwxr-xr-x	2026-09-02 09:35
pomo	[ DIR ]	drwxr-xr-x	2026-09-01 13:37
rest-api	[ DIR ]	drwxr-xr-x	2026-08-12 08:57
sitemaps	[ DIR ]	drwxr-xr-x	2026-09-02 12:28
sodium_compat	[ DIR ]	drwxr-xr-x	2026-09-02 10:46
style-engine	[ DIR ]	drwxr-xr-x	2026-09-02 09:43
theme-compat	[ DIR ]	drwxr-xr-x	2026-09-02 10:32
widgets	[ DIR ]	drwxr-xr-x	2026-09-02 19:06
bookmark-template.php	12.47 KB	-rw-r--r--	2025-04-16 03:32
class-walker-category.php	8.28 KB	-rw-r--r--	2023-09-08 09:32
class-wp-block-bindings-registry.php	8.07 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-list.php	4.6 KB	-rw-r--r--	2026-02-08 03:19
class-wp-block-metadata-registry.php	11.57 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-parser-frame.php	1.95 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-pattern-categories-registry.php	4.28 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-patterns-registry.php	10.07 KB	-rw-r--r--	2026-07-29 12:56
class-wp-block-templates-registry.php	6.91 KB	-rw-r--r--	2026-07-29 12:56
class-wp-classic-to-block-menu-converter.php	3.93 KB	-rw-r--r--	2026-07-29 12:56
class-wp-customize-nav-menus.php	56.61 KB	-rw-r--r--	2026-07-29 12:56
class-wp-fatal-error-handler.php	7.96 KB	-rw-r--r--	2024-10-22 10:16
class-wp-http-ixr-client.php	3.43 KB	-rw-r--r--	2026-07-29 12:56
class-wp-http-requests-response.php	4.14 KB	-rw-r--r--	2026-07-29 12:56
class-wp-list-util.php	7.27 KB	-rw-r--r--	2024-02-27 22:38
class-wp-post-type.php	29.95 KB	-rw-r--r--	2026-07-29 12:56
class-wp-recovery-mode-key-service.php	4.8 KB	-rw-r--r--	2026-07-29 12:56
class-wp-text-diff-renderer-table.php	18.49 KB	-rw-r--r--	2026-07-29 12:56
class-wp-theme-json-data.php	1.77 KB	-rw-r--r--	2024-06-04 11:55
class-wp-theme-json-schema.php	7.19 KB	-rw-r--r--	2024-06-06 08:02
default-filters.php	36.54 KB	-rw-r--r--	2026-07-29 12:56
ms-default-filters.php	6.48 KB	-rw-r--r--	2023-02-24 01:23
post-template.php	67.01 KB	-rw-r--r--	2026-07-29 12:56

Rename

<?php
/**
 * Error Protection API: WP_Fatal_Error_Handler class
 *
 * @package WordPress
 * @since 5.2.0
 */

/**
 * Core class used as the default shutdown handler for fatal errors.
 *
 * A drop-in 'fatal-error-handler.php' can be used to override the instance of this class and use a custom
 * implementation for the fatal error handler that WordPress registers. The custom class should extend this class and
 * can override its methods individually as necessary. The file must return the instance of the class that should be
 * registered.
 *
 * @since 5.2.0
 */
#[AllowDynamicProperties]
class WP_Fatal_Error_Handler {

/**
	 * Runs the shutdown handler.
	 *
	 * This method is registered via `register_shutdown_function()`.
	 *
	 * @since 5.2.0
	 *
	 * @global WP_Locale $wp_locale WordPress date and time locale object.
	 */
	public function handle() {
		if ( defined( 'WP_SANDBOX_SCRAPING' ) && WP_SANDBOX_SCRAPING ) {
			return;
		}

// Do not trigger the fatal error handler while updates are being installed.
		if ( wp_is_maintenance_mode() ) {
			return;
		}

try {
			// Bail if no error found.
			$error = $this->detect_error();
			if ( ! $error ) {
				return;
			}

if ( ! isset( $GLOBALS['wp_locale'] ) && function_exists( 'load_default_textdomain' ) ) {
				load_default_textdomain();
			}

$handled = false;

if ( ! is_multisite() && wp_recovery_mode()->is_initialized() ) {
				$handled = wp_recovery_mode()->handle_error( $error );
			}

// Display the PHP error template if headers not sent.
			if ( is_admin() || ! headers_sent() ) {
				$this->display_error_template( $error, $handled );
			}
		} catch ( Exception $e ) {
			// Catch exceptions and remain silent.
		}
	}

/**
	 * Detects the error causing the crash if it should be handled.
	 *
	 * @since 5.2.0
	 *
	 * @return array|null Error information returned by `error_get_last()`, or null
	 *                    if none was recorded or the error should not be handled.
	 */
	protected function detect_error() {
		$error = error_get_last();

// No error, just skip the error handling code.
		if ( null === $error ) {
			return null;
		}

// Bail if this error should not be handled.
		if ( ! $this->should_handle_error( $error ) ) {
			return null;
		}

return $error;
	}

/**
	 * Determines whether we are dealing with an error that WordPress should handle
	 * in order to protect the admin backend against WSODs.
	 *
	 * @since 5.2.0
	 *
	 * @param array $error Error information retrieved from `error_get_last()`.
	 * @return bool Whether WordPress should handle this error.
	 */
	protected function should_handle_error( $error ) {
		$error_types_to_handle = array(
			E_ERROR,
			E_PARSE,
			E_USER_ERROR,
			E_COMPILE_ERROR,
			E_RECOVERABLE_ERROR,
		);

if ( isset( $error['type'] ) && in_array( $error['type'], $error_types_to_handle, true ) ) {
			return true;
		}

/**
		 * Filters whether a given thrown error should be handled by the fatal error handler.
		 *
		 * This filter is only fired if the error is not already configured to be handled by WordPress core. As such,
		 * it exclusively allows adding further rules for which errors should be handled, but not removing existing
		 * ones.
		 *
		 * @since 5.2.0
		 *
		 * @param bool  $should_handle_error Whether the error should be handled by the fatal error handler.
		 * @param array $error               Error information retrieved from `error_get_last()`.
		 */
		return (bool) apply_filters( 'wp_should_handle_php_error', false, $error );
	}

/**
	 * Displays the PHP error template and sends the HTTP status code, typically 500.
	 *
	 * A drop-in 'php-error.php' can be used as a custom template. This drop-in should control the HTTP status code and
	 * print the HTML markup indicating that a PHP error occurred. Note that this drop-in may potentially be executed
	 * very early in the WordPress bootstrap process, so any core functions used that are not part of
	 * `wp-includes/load.php` should be checked for before being called.
	 *
	 * If no such drop-in is available, this will call {@see WP_Fatal_Error_Handler::display_default_error_template()}.
	 *
	 * @since 5.2.0
	 * @since 5.3.0 The `$handled` parameter was added.
	 *
	 * @param array         $error   Error information retrieved from `error_get_last()`.
	 * @param true|WP_Error $handled Whether Recovery Mode handled the fatal error.
	 */
	protected function display_error_template( $error, $handled ) {
		if ( defined( 'WP_CONTENT_DIR' ) ) {
			// Load custom PHP error template, if present.
			$php_error_pluggable = WP_CONTENT_DIR . '/php-error.php';
			if ( is_readable( $php_error_pluggable ) ) {
				require_once $php_error_pluggable;

return;
			}
		}

// Otherwise, display the default error template.
		$this->display_default_error_template( $error, $handled );
	}

/**
	 * Displays the default PHP error template.
	 *
	 * This method is called conditionally if no 'php-error.php' drop-in is available.
	 *
	 * It calls {@see wp_die()} with a message indicating that the site is experiencing technical difficulties and a
	 * login link to the admin backend. The {@see 'wp_php_error_message'} and {@see 'wp_php_error_args'} filters can
	 * be used to modify these parameters.
	 *
	 * @since 5.2.0
	 * @since 5.3.0 The `$handled` parameter was added.
	 *
	 * @param array         $error   Error information retrieved from `error_get_last()`.
	 * @param true|WP_Error $handled Whether Recovery Mode handled the fatal error.
	 */
	protected function display_default_error_template( $error, $handled ) {
		if ( ! function_exists( '__' ) ) {
			wp_load_translations_early();
		}

if ( ! function_exists( 'wp_die' ) ) {
			require_once ABSPATH . WPINC . '/functions.php';
		}

if ( ! class_exists( 'WP_Error' ) ) {
			require_once ABSPATH . WPINC . '/class-wp-error.php';
		}

if ( true === $handled && wp_is_recovery_mode() ) {
			$message = __( 'There has been a critical error on this website, putting it in recovery mode. Please check the Themes and Plugins screens for more details. If you just installed or updated a theme or plugin, check the relevant page for that first.' );
		} elseif ( is_protected_endpoint() && wp_recovery_mode()->is_initialized() ) {
			if ( is_multisite() ) {
				$message = __( 'There has been a critical error on this website. Please reach out to your site administrator, and inform them of this error for further assistance.' );
			} else {
				$message = sprintf(
					/* translators: %s: Support forums URL. */
					__( 'There has been a critical error on this website. Please check your site admin email inbox for instructions. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
					__( 'https://wordpress.org/support/forums/' )
				);
			}
		} else {
			$message = __( 'There has been a critical error on this website.' );
		}

$message = sprintf(
			'<p>%s</p><p><a href="%s">%s</a></p>',
			$message,
			/* translators: Documentation about troubleshooting. */
			__( 'https://wordpress.org/documentation/article/faq-troubleshooting/' ),
			__( 'Learn more about troubleshooting WordPress.' )
		);

$args = array(
			'response' => 500,
			'exit'     => false,
		);

/**
		 * Filters the message that the default PHP error template displays.
		 *
		 * @since 5.2.0
		 *
		 * @param string $message HTML error message to display.
		 * @param array  $error   Error information retrieved from `error_get_last()`.
		 */
		$message = apply_filters( 'wp_php_error_message', $message, $error );

/**
		 * Filters the arguments passed to {@see wp_die()} for the default PHP error template.
		 *
		 * @since 5.2.0
		 *
		 * @param array $args Associative array of arguments passed to `wp_die()`. By default these contain a
		 *                    'response' key, and optionally 'link_url' and 'link_text' keys.
		 * @param array $error Error information retrieved from `error_get_last()`.
		 */
		$args = apply_filters( 'wp_php_error_args', $args, $error );

$wp_error = new WP_Error(
			'internal_server_error',
			$message,
			array(
				'error' => $error,
			)
		);

wp_die( $wp_error, '', $args );
	}
}