My PHP proxy

MyPHPProxy.php

<?php
    error_reporting(E_ALL); 
    ini_set("display_errors", 1);


    //$ch = curl_init($_GET['url']);
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_VERBOSE, TRUE);

    //echo "http://185.162.235.142:80/".$_GET['url'];
    //curl_setopt($ch, CURLOPT_PROXY, "http://999.999.999.999:2000"); //your proxy url
    //curl_setopt($ch, CURLOPT_PROXYPORT, "2000"); // your proxy port number
    //curl_setopt($ch, CURLOPT_URL, "http://999.999.999.999/api/v1/category");

    // curl_setopt($ch, CURLOPT_URL, "http://999.999.999.999.3");
    curl_setopt($ch, CURLOPT_URL, "http://999.999.999.999:80/".$_GET['url']);

    // curl_setopt($ch, CURLOPT_PORT, 2040);

        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE); 
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch,CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');

    curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-type: application/vnd+cbnv+endpoint']);

    $output = curl_exec($ch);

    //$info = curl_getinfo($ch);
    //var_dump($info);
    //var_dump(curl_error($ch));

    curl_close($ch);

    echo $output;

    //echo function_exists('curl_exec');
    //echo extension_loaded('curl');
    /*
    echo '<pre>';
    var_dump(curl_version());
    echo '</pre>';
    */

    /*
    // To check if ports are open
    //$host = 'http://999.999.999.999/api/v1/category';
    $host = 'egovahi.ir';
    $ports = array(88, 21, 25, 80, 81, 110, 443, 3306, 2000);

    foreach ($ports as $port)
    {
        $connection = @fsockopen($host, $port);

        if (is_resource($connection))
        {
            echo '<h2>' . $host . ':' . $port . ' ' . '(' . getservbyport($port, 'tcp') . ') is open.</h2>' . "\n";

            fclose($connection);
        }

        else
        {
            echo '<h2>' . $host . ':' . $port . ' is not responding.</h2>' . "\n";
        }
    }
    */

    //echo file_get_contents("http://999.999.999.999/".$_GET['url']);
    /*
    $fp = fsockopen('999.999.999.999:2000/api/v1', 2000, $errno, $errstr, 5);
    if (!$fp) {
        echo "port is closed or blocked";

    } else {
        echo "port is open and available";
        fclose($fp);
    }*/

?>