404 hATASI çÖZÜmü

 http://www.site.com/asd-dsa-sss-116.html  //url yapısı
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$get_url="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
$url = "http://".$_SERVER['HTTP_HOST']."/".seo_url($say['url'])."-".$say['id'].".html";
//echo $get_url."<br>".$url;die();

if ($get_url<>$url) {
    header( 'HTTP/1.1 404 Not Found' );
include( $_SERVER['DOCUMENT_ROOT'] . '/404.php' );
    }
if($say){ ?>
<? }else{ ?>

 
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404 sayfası en üst alanı
<?php
header("HTTP/1.0 404 Not Found");header("HTTP/1.1 404 Not Found");header("Status: 404 Not Found");header("Cache-Control: no-cache");header("Pragma: no-cache");header("Expires: -1"); ?>