note 76420 deleted from function.file-exists by cmb

Note Submitter: pcdinh at phpvietnam dot net ---- In response to havran at gmail dot com Your function url_exists() does not work because it has got a big bug. curl_init does not make a connection to that url until curl_exec() is executed. The return value from curl_init() shows if a curl session can be started. That function can be rewritten as follows <?php class Url { /** * Check if an url is existed * * @param string $url * @access static * @return bool True if the url is accessible and false if the url is unaccessible or does not exist * @throws Exception An exception will be thrown when Curl session fails to start */ public static function exists($url) { if (null === $url || '' === trim($url)) { throw new Exception('The url to check must be a not empty string'); } $handle = curl_init($url); if (false === $handle) { throw new Exception('Fail to start Curl session'); } curl_setopt($handle, CURLOPT_HEADER, false); curl_setopt($handle, CURLOPT_NOBODY, true); curl_setopt($handle, CURLOPT_RETURNTRANSFER, false); // grab Url $connectable = curl_exec($handle); // close Curl resource, and free up system resources curl_close($handle); return $connectable; } } ?> How to use: <?php try { if (Url::exists('http://phpvietnam.net')) { // Do something here } } catch (Exception $ex) { // Do something here } ?>