php原生跨域

···
header("access-control-allow-headers: Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Mx-ReqToken,X-Requested-With");
header("access-control-allow-methods: GET, POST, PUT, DELETE, HEAD, OPTIONS");
header("access-control-allow-credentials: true");
header("access-control-allow-origin: *");
header('X-Powered-By: WAF/2.0');
$arr = array('userid'=>10001,'name'=>'老马','age'=>56);

echo json_encode($arr);
···