I am trying to add random bytes to binary (.exe) files to increase it size using php. So far I got this:

function junk($bs)
{
    // string length: 256 chars
    $tmp = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa';

    for($i=0;$i<=$bs;$i++)
    {
        $tmp = $tmp . $tmp;
    }
    return $tmp;
}

$fp = fopen('test.exe', 'ab');
fwrite($fp, junk(1));
fclose($fp);

Bu iyi çalışır ve çıkan exe fonksiyonel ama ben dosyanın daha fazla boyutu eklemek için önemsiz (100) yapmak istiyorsanız ben php hata alıyorum "Fatal error: ... İzin bellek boyutu"

Hangi başka bir şekilde ben bir hata almadan bunu başarabilir? Bu fwrite xxx kez döngü ok olurdu?