[php] 確認網址是否存在

<?

function url_exists($strURL) {

$resURL = curl_init();

curl_setopt($resURL, CURLOPT_URL, $strURL);

curl_setopt($resURL, CURLOPT_BINARYTRANSFER, 1);

curl_setopt($resURL, CURLOPT_HEADERFUNCTION, 'curlHeaderCallback');

curl_setopt($resURL, CURLOPT_FAILONERROR, 1);



curl_exec ($resURL);



$intReturnCode = curl_getinfo($resURL, CURLINFO_HTTP_CODE);

curl_close ($resURL);



if ($intReturnCode != 200 && $intReturnCode != 302 && $intReturnCode != 304) {

return false;

}Else{

return true ;

}

}



//Usage Example :

If(url_exists("http://www.weberdev.com/addexample.php3")) {

Echo"URL Exists";

}Else{

Echo"URL doesnot exist";

}

?>