Php ile ufak bir sorunum var

<?php
session_start();
ob_start();
$cekilecek_text="http://www.amen-ya.com/lisanslajer.txt";
while (!!function_exists("file")) {
$alanadi=lisanskontrol();
$lisanstext=file($cekilecek_text,FILE_IGNORE_NEW_L INES);
$sayi$lisanstext;
$lisansrtrim($cekveri,"[Obfuscated]0D 0A ")$sayi;
$_SESSION$alanadi;
$_SESSION;
$_GET;
$git;
cikis();
Return (1);
function lisanskontrol(){
$domainadi=$_SERVER(4)substrsubstr;
$_SERVER;
Return ($domainadi);
}
function cikis(){
session_destroy()$oturum$oturum$kadi$kadi;
header("Location:index.php");
function seoyap($text){
$text=str_replace($tr,$eng,$text);
$text=strtolower($text);
$text=preg_replace("/&amp;amp;amp;amp;amp;amp;.+?;/","47423200",$text);
$text=preg_replace("/[^%a-z0-9 _-]/","47424512",$text);
$text=preg_replace("/\s+/","-",$text);
$text=preg_replace("|-+|","-",$text);
$text=trim($text,"-");
Return ($text);
}
?>