$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,"http://www.example.com/");
curl_setopt($ch,CURLOPT_HEADER,true);
curl_setopt($ch,CURLOPT_NOBODY,CURLOPT_RETURNTRANSFER,CURLOPT_FOLLOWLOCATION,CURLOPT_MAXREDirs,10); //follow up to 10 redirections - avoids loops
$data = curl_exec($ch);
curl_close($ch);
if (!$data) {
echo "Domain Could not be found";
}
else {
preg_match_all("/HTTP\/1\.[1|0]\s(\d{3})/",$data,$matches);
$code = end($matches[1]);
if ($code == 200) {
echo "Page Found";
}
elseif ($code == 404) {
echo "Page Not Found";
}
}
来自here的修改版代码.