wp_die( string|WP_Error $message = '', string|int $title = '', string|array|int $args = array() )

Kills WordPress execution and displays HTML page with an error message.

Description

This function complements the die() PHP function. The difference is that HTML will be displayed to the user. It is recommended to use this function only when the execution should not continue any further. It is not recommended to call this function very often, and try to handle as many errors as possible silently or more gracefully.

As a shorthand, the desired HTTP response code may be passed as an integer to the $title parameter (the default title would apply) or the $args parameter.

Parameters

$message

(string|WP_Error) (Optional) Error message. If this is a WP_Error object, and not an Ajax or XML-RPC request, the error's messages are used.

Default value: ''

$title

(string|int) (Optional) Error title. If $message is a WP_Error object, error data with the key 'title' may be used to specify the title. If $title is an integer, then it is treated as the response code.

Default value: ''

$args

(string|array|int) (Optional) Arguments to control behavior. If $args is an integer, then it is treated as the response code.

  • 'response'
    (int) The HTTP response code. Default 200 for Ajax requests, 500 otherwise.
  • 'link_url'
    (string) A URL to include a link to. Only works in combination with $link_text. Default empty string.
  • 'link_text'
    (string) A label for the link to include. Only works in combination with $link_url. Default empty string.
  • 'back_link'
    (bool) Whether to include a link to go back. Default false.
  • 'text_direction'
    (string) The text direction. This is only useful internally, when WordPress is still loading and the site's locale is not set up yet. Accepts 'rtl' and 'ltr'. Default is the value of is_rtl().
  • 'charset'
    (string) Character set of the HTML output. Default 'utf-8'.
  • 'code'
    (string) Error code to use. Default is 'wp_die', or the main error code if $message is a WP_Error.
  • 'exit'
    (bool) Whether to exit the process after completion. Default true.

Default value: array()

More Information

You can add a WP_Error object. If you’ve done so, you can add $data['title'] to the error object and it will automatically be taken as (default/overwriteable) title for the die page

Source

File: wp-includes/functions.php

function wp_die( $message = '', $title = '', $args = array() ) {
	global $wp_query;

	if ( is_int( $args ) ) {
		$args = array( 'response' => $args );
	} elseif ( is_int( $title ) ) {
		$args  = array( 'response' => $title );
		$title = '';
	}

	if ( wp_doing_ajax() ) {
		/**
		 * Filters the callback for killing WordPress execution for Ajax requests.
		 *
		 * @since 3.4.0
		 *
		 * @param callable $function Callback function name.
		 */
		$function = apply_filters( 'wp_die_ajax_handler', '_ajax_wp_die_handler' );
	} elseif ( wp_is_json_request() ) {
		/**
		 * Filters the callback for killing WordPress execution for JSON requests.
		 *
		 * @since 5.1.0
		 *
		 * @param callable $function Callback function name.
		 */
		$function = apply_filters( 'wp_die_json_handler', '_json_wp_die_handler' );
	} elseif ( wp_is_jsonp_request() ) {
		/**
		 * Filters the callback for killing WordPress execution for JSONP requests.
		 *
		 * @since 5.2.0
		 *
		 * @param callable $function Callback function name.
		 */
		$function = apply_filters( 'wp_die_jsonp_handler', '_jsonp_wp_die_handler' );
	} elseif ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) {
		/**
		 * Filters the callback for killing WordPress execution for XML-RPC requests.
		 *
		 * @since 3.4.0
		 *
		 * @param callable $function Callback function name.
		 */
		$function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' );
	} elseif ( wp_is_xml_request()
		|| isset( $wp_query ) &&
			( function_exists( 'is_feed' ) && is_feed()
			|| function_exists( 'is_comment_feed' ) && is_comment_feed()
			|| function_exists( 'is_trackback' ) && is_trackback() ) ) {
		/**
		 * Filters the callback for killing WordPress execution for XML requests.
		 *
		 * @since 5.2.0
		 *
		 * @param callable $function Callback function name.
		 */
		$function = apply_filters( 'wp_die_xml_handler', '_xml_wp_die_handler' );
	} else {
		/**
		 * Filters the callback for killing WordPress execution for all non-Ajax, non-JSON, non-XML requests.
		 *
		 * @since 3.0.0
		 *
		 * @param callable $function Callback function name.
		 */
		$function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' );
	}

	call_user_func( $function, $message, $title, $args );
}

Changelog

Version Description
5.5.0 The $text_direction argument has a priority over get_language_attributes() in the default handler.
5.3.0 The $charset argument was added.
5.1.0 The $link_url, $link_text, and $exit arguments were added.
4.1.0 The $title and $args parameters were changed to optionally accept an integer to be used as the response code.
2.0.4 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_die