PHP 跨域 Access-Control-Allow-Orig

//废话不多说，复制就完了
$origin = isset($_SERVER['HTTP_ORIGIN'])? $_SERVER['HTTP_ORIGIN'] : '';
$allowOrigin = array(
    'https://www.baidu.com/',
    'https://www.google.com/'
);
if (in_array($origin, $allowOrigin)) {
    header("Access-Control-Allow-Origin:".$origin);
}