<?php
ini_set("upload_max_filesize","20M");
ini_set("memory_limit","20M");
$pictures = $_POST['pictures'];
$gallery = $_POST['gallery'];
//print_r($_FILES);
foreach ($_FILES["pictures"]["error"] as $key => $error) {
   $name = $_FILES["pictures"]["name"][$key];
   if ($error == 0) {
       $tmp_name = $_FILES["pictures"]["tmp_name"][$key];
       $name = $_FILES["pictures"]["name"][$key];
       move_uploaded_file($tmp_name, "temp/$name");
       $ext = explode(".",$name);
       $ext = array_reverse($ext);
       if (strtolower($ext[0]) == "zip"){
          chdir('temp');
       	  shell_exec("unzip $name");
       	  unlink($name);
       }   
   }
}