<?php

$http_origin = $_SERVER['HTTP_ORIGIN'];

if ($http_origin == "http://keylab.cc" || $http_origin == "http://www.keylab.cc" || $http_origin == "http://www.domain3.com")
{
    header("Access-Control-Allow-Origin: $http_origin");
}

header("Access-Control-Allow-Credentials:true");
header("Access-Control-Allow-Headers: log_user_id, Origin, X-Requested-With, Content-Type, Accept, Authorization");