Youtube api with curl creating problem

Hi
i m new to curl. i want to take view count from youtube api with video id help of curl but sometime it gives 0 count so that wrong .
i use this code below

// array of curl handles
$curly = array();
// data to be returned
$result = array();

// multi handle
$mh = curl_multi_init();

// loop through $data and create curl handles
// then add them to the multi-handle
foreach ($data as $id => $d) {

$curly[$id] = curl_init();

$url = (is_array($d) && !empty($d['url'])) ? $d['url'] : $d;
curl_setopt($curly[$id], CURLOPT_URL, $url);
curl_setopt($curly[$id], CURLOPT_HEADER, 0);
curl_setopt($curly[$id], CURLOPT_RETURNTRANSFER, 1);

// post?
if (is_array($d)) {
if (!empty($d['post'])) {
curl_setopt($curly[$id], CURLOPT_POST, 1);
curl_setopt($curly[$id], CURLOPT_POSTFIELDS, $d['post']);
}
}

curl_multi_add_handle($mh, $curly[$id]);
}

// execute the handles
$running = null;
do {
curl_multi_exec($mh, $running);
} while($running > 0);

// get content and remove handles
foreach($curly as $id => $c) {
$result[$id] = curl_multi_getcontent($c);
curl_multi_remove_handle($mh, $c);
}

// all done
curl_multi_close($mh);

return $result;

i did not what happen some one time they give view count 0.Please help its urgent

Thanks