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is_wp_error › WordPress Function

Since2.1.0
已弃用n/a
› is_wp_error ( $thing )
参数:
  • (mixed) $thing The variable to check.
    Required: Yes
返回:
  • (bool) Whether the variable is an instance of WP_Error.
定义在:
文档:

Checks whether the given variable is a WordPress Error.

Returns whether $thing is an instance of the WP_Error class.


Related Functions: is_error, is_client_error, is_server_error, _wp_cron, wp_generator

源码 

function is_wp_error( $thing ) {
	$is_wp_error = ( $thing instanceof WP_Error );

	if ( $is_wp_error ) {
		/**
		 * Fires when `is_wp_error()` is called and its parameter is an instance of `WP_Error`.
		 *
		 * @since 5.6.0
		 *
		 * @param WP_Error $thing The error object passed to `is_wp_error()`.
		 */
		do_action( 'is_wp_error_instance', $thing );
	}

	return $is_wp_error;
}