如何使用curl_multi将发布数据用PHP发送到PostgreSQL DB并返回结果

I need to stress-test a PHP POST form which registers a user in the DB. The form needs password1 and username, no validation for these fields for now. I want to use curl_multi to start multi descriptors and post the data.

I have tried googling for this and I have tried a few different ways of using curl_multi. Currently, I am trying to use PHP Doc's example. here is the link I have tried: http://www.zedwood.com/article/curl-multi-concurrent-download-example

//Initializing single cURL descriptor
$ch1 = curl_init("example.com/registerFlood.php"); //HTTPS portocol
$ch2 = curl_init("example.com/registerFlood.php"); //HTTPS portocol

// cURL options
//$ch1
curl_setopt($ch1, CURLOPT_POST, TRUE);
curl_setopt($ch1, CURLOPT_POSTFIELDS, 'username=TESTINGW&password1=vsadf!daG1&email=nrvcsdsabg&submit=submit');
//$ch2
curl_setopt($ch2, CURLOPT_POST, TRUE);
curl_setopt($ch1, CURLOPT_POSTFIELDS, 'username=51INGW&password1=vsadf!daG1&email=nrvcsdsabg&submit=submit');


//Initializing multi cURL descriptor
$mh = curl_multi_init();

//Adding handles
curl_multi_add_handle($mh,$ch1);
curl_multi_add_handle($mh,$ch2);

//Executing multi cURL
do {
    $status = curl_multi_exec($mh, $active);
    echo curl_multi_strerror(curl_multi_errno($mh));
    if ($active) {
        curl_multi_select($mh);
    }
} while ($active && $status == CURLM_OK);

//Closing Descriptors
curl_multi_remove_handle($mh, $ch1);
curl_multi_remove_handle($mh, $ch2);
curl_multi_close($mh);