Untitled

<?php
show_source(__FILE__);
?>
<html>
<tittle>Can you bypass it?</tittle>
<from method="post" enctype="multipart/form-data">
upload: <input type="file" name="p0tz">
<input type="submit" value="upload" name="upload">
</form>
</html>
<?php
$upload_dir = "p0tz";
$info = pathinfo($_FILES['p0tz']['name']);
$file = getimagesize($_FILES['p0tz']['tmp_name']);
if(isset($_POST['upload'])) {
    if(($info['extension'] != ("jpg") && ($file['mime'] != "image/jpeg")) {
        print "file .jpg cok !<br>";
    } else {
        if(!$file) {
            print "Are you Sure This is Images? :D<br> I Smell backdoor here Bhahahahaha , you must try harder to bypass it :D<br>";
        } else {
            if(preg_match("/php|phtml|html|txt|aps|x/" , $info['extension'])) {
                die("Are You Sure This Images? :D<br> I smell backdoor here Bhahahahaha , you must try harder to bypass it :D<br>";
            }
            @copy($_FILES['p0tz']['tmp_name'], $upload_dir."/".$_FILES['p0tz']['name']);
            print "(OK) Your File:  ".$upload_dir."/".$FILES['p0tz']['name']."<br>";
        }
    }
}
?>