Script para comprobar el proxy. PHP

<?php

// Set the proxy IP address and port
$proxyIP = 'Proxy_IP_Address';
$proxyPort = 'Proxy_Port';

// URL to test the proxy
$url = 'http://example.com';

// Set timeout for the request
$timeout = 10;

// Initialize cURL session
$ch = curl_init();

// Set cURL options
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_PROXY, $proxyIP . ':' . $proxyPort);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);

// Execute cURL request
$response = curl_exec($ch);

// Check if any error occurred
if(curl_errno($ch)) {
    echo 'Error: ' . curl_error($ch);
} else {
    // Get HTTP response code
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    
    // Check if request was successful (HTTP 200)
    if($httpCode == 200) {
        echo 'Proxy is working!';
    } else {
        echo 'Proxy is not working. HTTP Response Code: ' . $httpCode;
    }
}

// Close cURL session
curl_close($ch);
?>