UPDATE/INSERT v MySQL

$catid2 = $_POST['catid2'];
//prochazeni csv po radcich
while (($data = fgetcsv($handle, 10000, ";")) !== FALSE)
     {       
		$id       = Addslashes(Chop($data[0]));
		$title    = AddSlashes(Chop($data[1]));
		$price   = AddSlashes(Chop($data[2]));	
        	//testuju zda je pritomna zhoda v id
		$check =mysql_query("SELECT cat FROM pricelists where id='$id' and catid2='$catid2'");   
	        while($rmp=mysql_fetch_array($check))
        {
        $index = $rmp['cat'];    
        }  
	    if($index)
	    {
		$update ="UPDATE pricelists set title='$title', price='$price', modified=NOW() where cat=$index and catid2='$catid2'";	
		mysql_query($update) or die(mysql_error());	
				
		echo '<tr bgcolor="cccccc"><td>Přepis</td><td>'.$i++; 		
		echo '</td><td>'.$id;
		echo '</td><td>'.$title;
		echo '</td><td>'.$price;				
		echo '</td></tr>';		
		}
		else
		{
		$import ="INSERT INTO pricelists (cat,id ,title , price, modified) VALUES ('','$id','$title','$price', NOW())";
	        mysql_query($import) or die(mysql_error());
	        
                echo '<tr bgcolor="lightyellow"><td>Import</td><td>'.$i++; 
		echo '</td><td>'.$id;
		echo '</td><td>'.$title;
		echo '</td><td>'.$price;			
		echo '</td></tr>';      
        }     	      	
     }