Convert video time
$json_array = file_get_contents("https://graph.facebook.com/v2.12/$PID[$FID]/videos?fields=title,length,from,description,created_time,source&limit=10&access_token=");
$json_data=json_decode($json_array,true);
foreach($json_data['data'] as $links){
$video_time = $links['length'];
238.142 this time to convert 3.57