Здравствуйте!
Как можно изменить код для загрузки на multiple. так чтобы выбирать и загружать сразу несколько файлов.Сейчас могу только по одному

<form  action="#" method="post" enctype="multipart/form-data"> 
<div id="specifikacii">


<?php
echo '

?>
</div>
<div  id="div_za_izbor_na_failove" >
<h3><img src="images/camera-icon.png" />Добави изображения </h3>
<table  border="0" id="tabli4ka" ><tr><td>
<input type="file" id="file_1"  name="file_name_1" onchange="validaciq_na_izobrajeniqta()" multiple  />
</td></tr></table>
</div>
<input type="hidden" id="hidden_value" value="1"  name="number_of_images" />
<input type="hidden" id="pone_edno_izobr" value="no"  name="at_least_one_pic" />
<input type="hidden" id="povtarqshti_se_izobrajeniq" value="no"  name="povtarqshti_izobrajeniq" />
<input type="button" onclick="choose_another_file()" id="add_image" /></br>

<input type="submit" value="Добави!"  name="submitche"  id="dobavi_zapis" disabled="disabled">

</form>


<?php
if(isset($_POST["submitche"]))
{
	
	
	// vzimane na stoinostite ot tekstovite poleta
	$kategoriq = $_POST["kategorii"];
	$marka = $_POST["marka"];
	$model = $_POST["model"];
	
	$godina_na_proizvodstvo = $_POST["godina_na_proizvodstvo"];
	if($godina_na_proizvodstvo=="")
	{
		$godina_na_proizvodstvo ="NULL";
	}
	else
	{
		$godina_na_proizvodstvo ="'$godina_na_proizvodstvo'";
	}
	
	$dopulnitelna_informaciq = $_POST["tekstova_zona"];
	if(empty($dopulnitelna_informaciq))
	{
		$dopulnitelna_informaciq = "NULL" ;
	}
	else
	{
		$dopulnitelna_informaciq = "'$dopulnitelna_informaciq'" ;
	}
	
	$v_nalichnost = $_POST["available"];
	
	// konekciq kum bazata danni
	$db = new MYSQL_DB();
	$db->connect();
	$db->select_db();
	$db->set_names_utf_8();
	$db->query="select * from advanced";
	$db->run_query() ;
	$db->number_of_results_found_fn();
	$namereni_rezultati = $db->number_of_results_found ;
	$id ;
	if($namereni_rezultati == 0)
	{
		$id = 1 ;
	}
	else
	{
		$db->query="SELECT COUNT(*) as total FROM advanced";
		$db->run_query();
		$db->number_of_results_found_fn() ;
		$rows = $db->number_of_results_found ;
		$row = mysql_fetch_array($db->query_result) ;
		$total_rows = $row[0];
		$last_row_index = $total_rows - 1 ;
		$db->query="select Zapis_ID from advanced limit $last_row_index , 1 ";
		$db->run_query();
		$row = mysql_fetch_array($db->query_result) ;
		$last_id_value = $row[0] ;
		$id = $last_id_value + 1 ;
		
		// da se testva 
	}
	//echo "ID na posledniq red $id <br/>" ; // testov red 
	
	
	$word = new Word_processing();
	$model_trimmed = trim($model);
	$marka_trimmed = trim($marka);
	$name = $marka_trimmed."_".$model_trimmed."_id_".$id ;
	$word->name = $name ;
	$latin_name = $word->kirilica_kum_latinica();
	//echo $latin_name."<br/>"; // testov red
	
	$number_of_images = $_POST['number_of_images']; // integer 
	$number_of_real_images = 0 ;
	$at_least_one_pic = false ;
	for($i = 1 ; $i <= $number_of_images ; $i++) // proverka dali izobshto ima edno izobrano izobrajenie
	{ 
		$file_name = $_FILES["file_name_$i"]["name"];
		
		if($file_name == "")
		{
			continue ;
		}
		else
		{
			$at_least_one_pic = true ; 
			$number_of_real_images++ ;
		}
		
	}
	
	//echo " Nomer na poleta za kachvane na izobrajeniq : $number_of_images <br/>"; // testov red
	//echo "Nomer na realnite izobrajeniq $number_of_real_images <br/> ";
	
	$masiv = array(); // masiv sudurjash imenata na failove i tehnite razshireniq
	for($i = 1 ; $i <= $number_of_images ; $i++)
	{	
		if($_FILES["file_name_$i"]["name"] == "")
		{
			continue ;
		}
		else
		{
			$masiv[] = $_FILES["file_name_$i"]["name"];
		}
			
	}

	
	for($i = 0 ; $i <  $number_of_real_images ; $i++)   // proverka da nqma povtarqshti se izobrajeniq
	{
		
		for($z = 0  ; $z < $number_of_real_images  ; $z++) 
		{	
			
			if($z == $i)
			{
				continue ;
			}
			else
			{
				
				if($masiv[$i]==$masiv[$z])
				{
					echo "Не можеш да качиш две повтарящи се изображения ! Име на повтарящото се изображение : ".$masiv[$i];
					exit ;
				}
				
			}
			
		}
		
		
	}
	
	if($at_least_one_pic == false)
	{
		echo "Не сте избрали изображение . Задължително е да изберете поне едно";
		exit ; 
	}
	else
	{
		$original_images_string ="" ;
		$small_images_string ="";
		$start = 1 ;
		$upload_folder_for_big_images="images/Big_images/";
		$upload_folder_for_small_images="images/Small_images/";
		// for cikul kopirash originalnoto izobrajenie i praveiki ot nego malko izobrajenie . Populva i gornite dva stringa i postavq sudurjanieto imm v baza danni kato referenciq
		// kum realnite izobrajeniq
		for($i = 1 ; $i <= $number_of_images  ; $i++) 
		{
			$file_name = $_FILES["file_name_$i"]["name"];
			if($file_name == "")
			{			
				continue ;
			}
			$extention = substr($file_name, -4) ;
			$path_plus_filename =$upload_folder_for_big_images.$latin_name."_pic_".$start.$extention ;
			$try_to_upload =	move_uploaded_file($_FILES["file_name_$i"]["tmp_name"] , "../".$path_plus_filename);
				if($try_to_upload == false)
				{
					echo "problem pri uploada na source image !!!!";
					exit ;				
				}
			$original_images_string  .= $path_plus_filename ;
			$original_images_string  .="|";
			
			resize_image("../".$path_plus_filename ,'210','180',$upload_folder_for_small_images.$latin_name."_pic_".$start.$extention  );
			$small_images_string .= $upload_folder_for_small_images.$latin_name."_pic_".$start.$extention ;
			$small_images_string .="|";
			$start++;
		}
	}
	$original_images_string =substr($original_images_string ,0 ,-1 ) ;
	$small_images_string =substr($small_images_string , 0 , -1 ) ;
	
	$data = date("Y-m-d");
	$db->query="INSERT INTO `shoemake_album`.`advanced` (`Zapis_ID`, `Kategoriq`, `Marka`, `Model`, `Godina_na_proizvodstvo`, `Dopulnitelna_informaciq`, `V_nalichnost`, `Big_images`, `Small_images`, `Data_na_dobavqne` , `Posledna_Redakciq`) VALUES (NULL, '$kategoriq', '$marka_trimmed', '$model_trimmed', $godina_na_proizvodstvo, $dopulnitelna_informaciq, '$v_nalichnost', '$original_images_string', '$small_images_string', '$data' , '$data' );";
	//echo $db->query ;
	$db->run_query() ;
	$db->affected_rows();
	if($db->number_of_affected_rows==1)
	{
		echo "Успешно добавихте запис за $marka_trimmed";
	}
	else
	{
		echo "Проблем с добавянето на записа !";
	}
}

?>
</div>
</body>
</html>