Help to test if a proxy works using php - php

Question

I have a list of proxies, need to use them in a php script I am writing.
How can I test that the proxy will work before I use it? is that possible? at the moment if the proxy doesn't work the script just dies after 30 seconds. Is there a quicker way to identify whether it will work or not?
perhaps create a socket connection? send something to it that will reveal whether the proxy is open?
thanks

Answer 1

you can use fsockopen for this, where you can specify a timeout.
A simple proxy list checker. You can check a list ip:port if that port is opened on that IP.
<?php
$fisier = file_get_contents('proxy_list.txt'); // Read the file with the proxy list
$linii = explode("\n", $fisier); // Get each proxy
$fisier = fopen("bune.txt", "a"); // Here we will write the good ones
for($i = 0; $i < count($linii) - 1; $i++) test($linii[$i]); // Test each proxy
function test($proxy)
{
global $fisier;
$splited = explode(':',$proxy); // Separate IP and port
if($con = #fsockopen($splited[0], $splited[1], $eroare, $eroare_str, 3))
{
fwrite($fisier, $proxy . "\n"); // Check if we can connect to that IP and port
print $proxy . '<br>'; // Show the proxy
fclose($con); // Close the socket handle
}
}
fclose($fisier); // Close the file
?>
you may also want to use set_time_limit so that you can run your script for longer.
Code taken from: http://www.php.net/manual/en/function.fsockopen.php#95605

Answer 2

You can use this function
function check($proxy=null)
{
$proxy= explode(':', $proxy);
$host = $proxy[0];
$port = $proxy[1];
$waitTimeoutInSeconds = 10;
$bool=false;
if($fp = #fsockopen($host,$port,$errCode,$errStr,$waitTimeoutInSeconds)){
$bool=true;
}
fclose($fp);
return $bool;
}