PHP简单实现跨域

$allowOrigin = array( 'dev.paimind.com', );

    if (in_array($origin, $allowOrigin)) {
        header("Access-Control-Allow-Origin:".$origin);
    }
    header("Access-Control-Allow-Credentials: true");
    header('Access-Control-Allow-Headers:x-requested-with,api_version,client_type,client_version,access-token,content-type');