curl_multi_exec how to execute it on several ip adresses and get response headers

Hello i have made a curl test on an ip and i could get the response infos( times, response code,...) this time i want to make it work on several ip's in the same time. I found that could be possible with curl_multi_exec, and i found this code:

         // create both cURL resources
        $ch1 = curl_init();
        $ch2 = curl_init();

// set URL and other appropriate options
        curl_setopt($ch1, CURLOPT_URL, "http://www.example.com/");
        curl_setopt($ch1, CURLOPT_HEADER, 0);
        curl_setopt($ch2, CURLOPT_URL, "http://www.php.net/");
        curl_setopt($ch2, CURLOPT_HEADER, 0);

//create the multiple cURL handle
        $mh = curl_multi_init();

//add the two handles
        curl_multi_add_handle($mh, $ch1);
        curl_multi_add_handle($mh, $ch2);

        $running = null;
//execute the handles
        do {
            开发者_运维技巧curl_multi_exec($mh, $running);
        } while ($running > 0);


//close the handles
        curl_multi_remove_handle($mh, $ch1);
        curl_multi_remove_handle($mh, $ch2);
        curl_multi_close($mh);

But i only get the hole content of the last url entered (CURLOPT_URL, "http://www.php.net/") and besides, i want the informations abouts the request and response( in curl i used ($infos = curl_getinfo($curl);)

You probably need PHP cURL Class With Multi-Threading
Get it here http://pastebin.com/vBgYDzVu or here http://semlabs.co.uk/assets/files/curl.zip

Ex:

    include "curl.php";

    $curl = new CURL();
    $optsA = array( CURLOPT_RETURNTRANSFER => true, CURLOPT_FOLLOWLOCATION => true,
 CURLOPT_HEADER => 0 );
    $optsB = array( CURLOPT_RETURNTRANSFER => true, CURLOPT_HEADER => 0 );
    $curl->addSession( "http://siteA.com/scriptA.php", $optsA );
    $curl->addSession( "http://siteB.com/scriptB.php", $optsB );
    $curl->addSession( "http://siteC.com/scriptC.php", $opts );
    $curl->addSession( "http://siteD.com/scriptD.php", $opts );
    $curlresult = $curl->exec();
    $curl->clear();

    $siteA = $curlresult[0]
    $siteB = $curlresult[1]
    $siteC = $curlresult[2]
    $siteD = $curlresult[3]