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_deprecated_argument() WP 3.0.0

Mark a function argument as deprecated and inform when it has been used.

This function is to be used whenever a deprecated function argument is used. Before this function is called, the argument must be checked for whether it was used by comparing it to its default value or evaluating whether it is empty. For example:

if ( ! empty( $deprecated ) ) {
	_deprecated_argument( __FUNCTION__, '3.0.0' );
}

There is a hook deprecated_argument_run that will be called that can be used to get the backtrace up to what file and function used the deprecated argument.

The current behavior is to trigger a user error if WP_DEBUG is true.

Хуки из функции
Возвращает

Ничего (null).

Использование

_deprecated_argument( $function, $version, $message );
$function(строка) (обязательный)
The function that was called.
$version(строка) (обязательный)
The version of WordPress that deprecated the argument used.
$message(строка)
A message regarding the change.
По умолчанию: null

Код deprecated argument: wp-includes/functions.php VER 5.1.1

<?php
function _deprecated_argument( $function, $version, $message = null ) {

	/**
	 * Fires when a deprecated argument is called.
	 *
	 * @since 3.0.0
	 *
	 * @param string $function The function that was called.
	 * @param string $message  A message regarding the change.
	 * @param string $version  The version of WordPress that deprecated the argument used.
	 */
	do_action( 'deprecated_argument_run', $function, $message, $version );

	/**
	 * Filters whether to trigger an error for deprecated arguments.
	 *
	 * @since 3.0.0
	 *
	 * @param bool $trigger Whether to trigger the error for deprecated arguments. Default true.
	 */
	if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) {
		if ( function_exists( '__' ) ) {
			if ( ! is_null( $message ) ) {
				/* translators: 1: PHP function name, 2: version number, 3: optional message regarding the change */
				trigger_error( sprintf( __( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s' ), $function, $version, $message ) );
			} else {
				/* translators: 1: PHP function name, 2: version number */
				trigger_error( sprintf( __( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.' ), $function, $version ) );
			}
		} else {
			if ( ! is_null( $message ) ) {
				trigger_error( sprintf( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s', $function, $version, $message ) );
			} else {
				trigger_error( sprintf( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.', $function, $version ) );
			}
		}
	}
}