need mem limit

<?php
/*********************************
 * * * * * * * * * * * ** * * * *
 *CODED BY AKASTEP **************
 *WWW.ANTI-armenia.ORG ***********
 ********************************/
error_reporting(E_ALL);
set_time_limit(0);
ini_set('memory_limit','900M');//Memory limit set etmek lazim ola biler cox boyuk fayldirsa//


$curdir=str_ireplace(basename(preg_replace('/\\\/i','/',realpath(__FILE__))),'',preg_replace('/\\\/i','/',realpath(__FILE__)));


$inputfile=$curdir .    'wordlist.txt';//burada dublikatlar var.//
$outputfile=$curdir .   'outputf.txt';//temiz wordlistimiz olacaq bu//


$farray=file($inputfile,FILE_IGNORE_NEW_LINES) or die('Input Fayli Aca bilmirem!Fayl Yoxdur?');

if (is_array($farray) && (int)count($farray)!=0)
    {
$cleen=array_unique($farray);

!isset($fs) ? $fs=NULL : '';
foreach($cleen as $wrds)
{
    $wrds=(string)$wrds;
    if(trim($wrds)!='') $fs.=$wrds . PHP_EOL;

}
unset($wrds);
file_put_contents($outputfile,$fs) or die('OUTPUT FAYLI YAZA BILMIREM!');
echo 'EMELIYYAT BITDI! DUblikat||@CRLF sayi pozuldu: =>' . (int)(count($farray) - count(file($outputfile))) . PHP_EOL;
exit;
}
?>