<?php
$guvenli = mysql_real_escape_string($_GET["link"]);
$urung = mysql_num_rows(mysql_query("SELECT * FROM urun where link='$guvenli'"));
$kategorig = mysql_num_rows(mysql_query("SELECT * FROM kategori where link='$guvenli'"));
if ( empty($urung || $kategorig) )
{
header("location: 404");
exit();
}
?>