$url = '将跳转的URL';

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_VERBOSE, true);

curl_setopt($ch, CURLOPT_HEADER, true);

curl_setopt($ch, CURLOPT_NOBODY, true);

curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

curl_setopt($ch, CURLOPT_TIMEOUT, 20);

curl_setopt($ch, CURLOPT_AUTOREFERER, true);

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

// 下面两行为不验证证书和 HOST，建议在此前判断 URL 是否是 HTTPS

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

// $ret 返回跳转信息

$ret = curl_exec($ch);

// $info 以 array 形式返回跳转信息

$info = curl_getinfo($ch);

// 跳转后的 URL 信息

$retURL = $info['url'];

// 记得关闭curl

curl_close($ch);

$headers = get_headers('将跳转的URL');

if ($headers && $headers['Location']){

    echo $headers['Location'];

}