(fonksiyon ile çözüm) kaynak dosya sadece index phpden include edilince çalışsın

kaynak : http://pastebin.com/KdT43r9j

if (strstr($_SERVER['REQUEST_URI'],'index.php')) {
    header('HTTP/1.0 404 Not Found');
}
       
if (strstr($_SERVER['REQUEST_URI'],'index.php')){
    header('HTTP/1.0 404 Not Found');
    echo "<h1>404 Not Found</h1>";
    echo "The page that you have requested could not be found.";
    exit();
}
       
if(strstr($_SERVER['REQUEST_URI'],'index.php')){
  header('HTTP/1.0 404 Not Found');
  readfile('404missing.html');
  exit();
}
       
<?php
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
header("Status: 404 Not Found");
$_SERVER['REDIRECT_STATUS'] = 404;
?> <!-- 404 contents below this line -->
       
if (strstr($_SERVER['REQUEST_URI'],'index.php')){
  header('HTTP/1.0 404 Not Found');
  exit("<h1>404 Not Found</h1>nThe page that you have requested could not be found.");
}
       
if($_SERVER['PHP_SELF'] == '/index.php'){
   header('HTTP/1.0 404 Not Found');
   echo "<h1>404 Not Found</h1>";
   echo "The page that you have requested could not be found.";
   die;
}
       
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
header("Status: 404 Not Found");
$_SERVER['REDIRECT_STATUS'] = 404;
//If you don't know which web page is in use, use any page that doesn't exists
$handle = curl_init('http://'. $_SERVER["HTTP_HOST"] .'/404missing.html');
curl_exec($handle);
       
if (<no file found>){
        die("NO FILE HERE");
    }
       
header('HTTP/1.0 404 Not Found');
    die("NO FILE HERE");
       
$uri=$_SERVER['REQUEST_URI'];
        $strpos=strpos($uri, '.php');
        if ($strpos!==false){
        $e404="The page requested by you: &quot".$_SERVER['REQUEST_URI']."&quot, doesn't exists on this server.";
        $maybe=str_replace('.php','',$uri);
        $maybe=str_replace('/','',$maybe);
        die("<center><h1>404</h1><hr><h3>$e404</h3><h3>Maybe try <a href=$maybe>www.leaveyortexthere.p.ht/$maybe</a>?</center>");
}
       
header("Status: 404 Not Found");
header('HTTP/1.0 404 Not Found');
       
echo '<iframe src="/something-bogus" width="100%" height="100%" frameBorder="0" border="0" scrolling="no"></iframe>';