Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_deprecated_hook( string $hook, string $version, string $replacement = '', string $message = '' )

Marks a deprecated action or filter hook as deprecated and throws a notice.


Description

Use the ‘deprecated_hook_run’ action to get the backtrace describing where the deprecated hook was called.

Default behavior is to trigger a user error if WP_DEBUG is true.

This function is called by the do_action_deprecated() and apply_filters_deprecated() functions, and so generally does not need to be called directly.


Top ↑

Parameters

$hook string Required
The hook that was used.
$version string Required
The version of WordPress that deprecated the hook.
$replacement string Optional
The hook that should have been used.

Default: ''

$message string Optional
A message regarding the change.

Default: ''


Top ↑

Source

File: wp-includes/functions.php. View all references

function _deprecated_hook( $hook, $version, $replacement = '', $message = '' ) {
	/**
	 * Fires when a deprecated hook is called.
	 *
	 * @since 4.6.0
	 *
	 * @param string $hook        The hook that was called.
	 * @param string $replacement The hook that should be used as a replacement.
	 * @param string $version     The version of WordPress that deprecated the argument used.
	 * @param string $message     A message regarding the change.
	 */
	do_action( 'deprecated_hook_run', $hook, $replacement, $version, $message );

	/**
	 * Filters whether to trigger deprecated hook errors.
	 *
	 * @since 4.6.0
	 *
	 * @param bool $trigger Whether to trigger deprecated hook errors. Requires
	 *                      `WP_DEBUG` to be defined true.
	 */
	if ( WP_DEBUG && apply_filters( 'deprecated_hook_trigger_error', true ) ) {
		$message = empty( $message ) ? '' : ' ' . $message;

		if ( $replacement ) {
			trigger_error(
				sprintf(
					/* translators: 1: WordPress hook name, 2: Version number, 3: Alternative hook name. */
					__( 'Hook %1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ),
					$hook,
					$version,
					$replacement
				) . $message,
				E_USER_DEPRECATED
			);
		} else {
			trigger_error(
				sprintf(
					/* translators: 1: WordPress hook name, 2: Version number. */
					__( 'Hook %1$s is <strong>deprecated</strong> since version %2$s with no alternative available.' ),
					$hook,
					$version
				) . $message,
				E_USER_DEPRECATED
			);
		}
	}
}

Top ↑

Hooks



Top ↑

Changelog

Changelog
Version Description
5.4.0 The error type is now classified as E_USER_DEPRECATED (used to default to E_USER_NOTICE).
4.6.0 Introduced.

Top ↑

User Contributed Notes

You must log in before being able to contribute a note or feedback.