How to use curl to determine whether a remote file exists in PHP_PHP Tutorial

PHP uses curl to determine whether the remote file exists. Please see the code below:

// Determine the remote file

Function check_remote_file_exists($url)

　{

$curl = curl_init($url);

// Do not retrieve data

curl_setopt($curl, CURLOPT_NOBODY, true);

// Send request

$result = curl_exec($curl);

　$found = false;

// If the request is not sent, it fails

　if ($result !== false) {

// Check again whether the http response code is 200

$statusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);

　if ($statusCode == 200) {

　$found = true;

　}

　}

curl_close($curl);

return $found;

　}