Kontrola uploadu

<?php
include "db.php";


 
 //This gets all the other information from the form 
 
 $ve=$_POST['ve']; 
 $na=$_POST['na'];
 $obt=$_POST['ob'];
 $po=$_POST['po'];
 $au=$_POST['au']; 
 $pic=($_FILES['obrazek']['name']); 
 $obt= mysql_real_escape_string($_POST['oblast_input']?$_POST['oblast_input']:$_POST['oblast_select']);  

$query_error = 'Došlo k chybě při zpracování SQL dotazu v databázi.';

//////////////////////////// 
if( is_uploaded_file($_FILES['obrazek']['tmp_name']) ) {
$prip = explode(".", $pic);
$pripona = $prip[count($prip)-1];
if($pripona!="jpg" AND $pripona!="gif" AND $pripona!="jpeg" AND $pripona!="png" AND $pripona!="JPG") {
echo "Nepodporovaný formát...";
}
$velikost = $_FILES['obrazek']['size']/1024;
$velikost = explode(".", $velikost);
$velikost = $velikost[0];
if($velikost > 1000) {
echo "Moc velká fotka...";
}
} else {
$novynazev = md5($na . $ve . $ob);
$cesta = "obrazky_k_cestam/$novynazev.$pripona";
$foto = "$novynazev.$pripona";

///////////////////////////

 

    


 
 //Writes the information to the database 
 mysql_query("INSERT INTO `cesty` VALUES ('', '$ob', '$ve', '$na', '$obt', '$po', '$au', '$foto')") or die($query_error) ; 
 
 //Writes the photo to the server 
 if(move_uploaded_file($_FILES['obrazek']['tmp_name'], $cesta)) 
 { 
 
 //Tells you if its all ok 
echo "ok.";
 } 
 else { 
 
 //Gives and error if its not 
 echo "Sorry, there was a problem uploading your file."; 
 }   
 }
 
?>