yanknudtskov

<?php

define( 'STAGING_URL', 'https://staging.mysiteurl.com');
define( 'PRODUCTION_URL', 'https://www.mysiteurl.com');

add_filter( 'wp_get_attachment_url', 'yanco_staging_wp_get_attachment_url', 1000000, 2 );
function yanco_staging_wp_get_attachment_url( $url, $attachment )
{
	if( strpos( $url, STAGING_URL ) !== false ) {
		$url = str_replace( STAGING_URL, PRODUCTION_URL, $url );