Upload iba PHP súborov

....
if(strtolower(end(explode('.', $filename))) == 'php'){
  move_uploaded_file(....)...
}...

$filename = $HTTP_POST_FILES["filename"];

if($_GET['info'] == 'ferror') {
$result .= "File that you want to check is too large";
}
echo $result;
exit;
}

if(isset($_POST['upload'])) {
if ($HTTP_POST_FILES["filename"]["size"] > 180 * 1024) {
    $result .= "ferror";
   $error = 1;
}
if($error == 0) {
$result .= md5_file($HTTP_POST_FILES["filename"]["tmp_name"]);
}

<form enctype="multipart/form-data" action="#" method="post">
PHP: <input name="php" type="file" /><br />
<input type="submit" name="upload" value="Upload" />
</form>
<?php
if(isset($_POST['upload'])){
   $tmpname = $_FILES['php']['tmp_name'];
   $filename = $_FILES['php']['name'];
   
if(strtolower(end(explode('.', $filename))) == 'php')
  $result = move_uploaded_file($tmpname, 'PHP/'.$filename);
else
  echo "Pozadovany subor nie je povoleny pre upload";
}


?>