Script Çekici [PHP]

<?php

###################
##         KingSkrupellos         ##
###################

echo '
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
    <title>Cyberizm Script Cekici</title>
    <style type="text/css">
    #Script span{display:block;font: 20px Tahoma }
    #Script input {border:1px solid #ggg; padding:10px;width:250px}
    #Script button {display:block;border:1px solid #555; padding:10px;width:272px;margin-top:10px;cursor:pointer}


    </style>
</head>
<body>
<center>
<div id = "Script">
<form action="" method="post">
<h1>Script Cekici</h1>
<span>Çekmek İstediğiniz Dizin: </span>
<input type="text" name="dizin" />
<span>İsim :</span>
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<input type="text" name="isim" />  &nbsp; &nbsp;.zip
<button type= "submit">Çek Bakalım</button>
<span>Not: Şuanda Bulundugun Dizin </span>

</div></center>
</body>
</html>

';


?>
<center>
<?php
echo realpath(".");
?>
</center>
<?php
$cek    = $_POST["dizin"];
$isim    = $_POST["isim"];
function Zip($source, $destination)
{
    if (extension_loaded('zip') === true)
    {
        if (file_exists($source) === true)
        {
                $zip = new ZipArchive();

                if ($zip->open($destination, ZIPARCHIVE::CREATE) === true)
                {
                        $source = realpath($source);

                        if (is_dir($source) === true)
                        {
                                $files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);

                                foreach ($files as $file)
                                {
                                        $file = realpath($file);

                                        if (is_dir($file) === true)
                                        {
                                                $zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
                                        }

                                        else if (is_file($file) === true)
                                        {
                                                $zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
                                        }
                                }
                        }

                        else if (is_file($source) === true)
                        {
                                $zip->addFromString(basename($source), file_get_contents($source));
                        }
                }

                return $zip->close();
        }
    }

    return false;
}

// Kullanımı Zip({{Dizin Adı}}, {{Oluşturulacak Arşiv Dosyası}});
Zip($cek , $isim.'.zip');


if($isim){


echo "<center>Cektin kerata aferin</center> ";

echo "<center><a href='".$isim.".zip'>".$isim.".zip</a></center>";


}