php help me

Can anyone change the code so that
1. be able to upload multiple photos simultaneously.
2. each random image name to be recorded in sql

Thanks

<?php
define(LOCATION,"http://lupa.zapto.org/pumpal/rename/");


$folder = "images/";
 
$width_img_default   = "600";
$height_img_default  = "450";
$open_type_upload = ".jpg";


$file_name       =        $_FILES['file_name']['name'];
$file_tmp        =       $_FILES['file_name']['tmp_name'];
$file_size       =       $_FILES['file_name']['tmp_size'];
$file_type       =       $_FILES['file_name']['type'];



$rand_file_name = rand(1000000000, 9999999999999);


$newfile_name = $rand_file_name.$file_name;



$open_types = array(
                     "image/jpg",
                     "image/jpeg",
                     "image/png",
                     "image/gif"
               );

               

if(!in_array($file_type, $open_types)) {
echo "Този формат файл не е позволен!";
}
else {

   

if (file_exists($folder.$rand_file_name.$open_type_upload)) {
echo "Този файл вече съществува. Моля опитайте отново!";
}
else {
   

  $upload = move_uploaded_file($file_tmp, $folder.$rand_file_name.$open_type_upload);

 list($width_img, $height_img) = getImagesize($folder.$rand_file_name.$open_type_upload);
 
 
 

if ($upload == true) {


   if ($width_img > $width_img_default || $height_img > $height_img_default) {     
   echo '<img src="'.$folder.$rand_file_name.$open_type_upload.'" width="'.$width_img_default.'" height="'.$height_img_default.'">';
   }   
   else {
   echo '<img src="'.$folder.$rand_file_name.$open_type_upload.'">';
   }
   
   
echo '<br /><br /><br />';
echo '<input type="text" size="60" value="'.LOCATION.$folder.$rand_file_name.$open_type_upload.'">';
 
}


}
}
?> 

Code (markup):