Question

我想通过php进行300重定向，但首先我要脚本将检查网站是否在线，如果在线，那么它将重定向，否则将显示无法重定向。谁能告诉我怎么可能？感谢

Answer 1

这应该这样做（ 为了更好而编辑 ）

$destination = 'http://www.google.com';
$ch = curl_init($destination);
// use request type HEAD because it's faster and lighter
curl_setopt($ch, CURLOPT_NOBODY, true);
// prevent curl from dumping any output
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// prevent curl from producing any output
curl_setopt($ch, CURLOPT_HEADER, false);
// run request
curl_exec($ch);
// consider request a success if the HTTP Code is less than 400 (start of errors)
// change this to whatever you expect to get, e.g. "equal to 200 (OK)"
$success = (bool) ((int)curl_getinfo($ch, CURLINFO_HTTP_CODE) < 400);
curl_close($ch);
// redirect or die
if ($success) {
    header('Location: ' . $destination, true, 301);
} else {
    die('Unable to redirect to <a href="'.$destination.'">'.$destination.'</a>');
}

检查网站后，PHP重定向

1 个答案: