WordPress at a glance
function is not described

woocommerce_get_order_id_by_order_key() WC 1.0

Deprecated from version 3.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

No Hooks.

Return

null. Nothing.

Usage

woocommerce_get_order_id_by_order_key( $order_key );
$order_key (required)
-

Changelog

Deprecated 3.0

Code of woocommerce_get_order_id_by_order_key() WC 5.3.0

<?php
function woocommerce_get_order_id_by_order_key( $order_key ) {
	wc_deprecated_function( __FUNCTION__, '3.0', 'wc_get_order_id_by_order_key' );
	return wc_get_order_id_by_order_key( $order_key );
}