static function stripos($s, $needle, $offset = 0)
{
if (false !== strpos($needle, 'I')) {
$needle = str_replace('I', 'ı', $needle);
}
if (false !== strpos($needle, 'İ')) {
$needle = str_replace('İ', 'i', $needle);
}
if (false !== strpos($s, 'I')) {
$s = str_replace('I', 'ı', $s);
}
if (false !== strpos($s, 'İ')) {
$s = str_replace('İ', 'i', $s);
}
return parent::stripos($s, $needle, $offset);
}