function dogrula($tc, $ad, $soyad, $yil) {
	if(!$ad || strlen($ad) <= 2 || !$soyad || strlen($soyad) <= 2 || !$yil || !$tc){
		return false;
	}else if(strlen($tc) != 11){
		return false;
	}else if(strlen($yil) != 4 || !is_numeric($yil)){
		return false;
	}else{
		try{
			
			$url = 'http://tckimlikapi.com/?Ad='.urlencode($ad).'&Soyad='.urlencode($soyad).'&DogumYili='.$yil.'&TCKimlikNo='.$tc;
			$resp = file_get_contents($url);
			$json = json_decode($resp);

			return $json->result == 'OK';
		}catch(Exception $hata){
			return false;
		}
	}
}