PHP TC Kimlik Numarası Doğrulama

<meta charset="utf-8">
<?php
	function tcno_dogrula($bilgiler){
		$gonder = '<?xml version="1.0" encoding="utf-8"?>
		<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
		<soap:Body>
		<TCKimlikNoDogrula xmlns="http://tckimlik.nvi.gov.tr/WS">
		<TCKimlikNo>'.$bilgiler["tcno"].'</TCKimlikNo>
		<Ad>'.$bilgiler["isim"].'</Ad>
		<Soyad>'.$bilgiler["soyisim"].'</Soyad>
		<DogumYili>'.$bilgiler["dogumyili"].'</DogumYili>
		</TCKimlikNoDogrula>
		</soap:Body>
		</soap:Envelope>';
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL,            "https://tckimlik.nvi.gov.tr/Service/KPSPublic.asmx" );
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true );
		curl_setopt($ch, CURLOPT_POST,           true );
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
		curl_setopt($ch, CURLOPT_HEADER, FALSE);
		curl_setopt($ch, CURLOPT_POSTFIELDS,    $gonder);
		curl_setopt($ch, CURLOPT_HTTPHEADER,     array(
		'POST /Service/KPSPublic.asmx HTTP/1.1',
		'Host: tckimlik.nvi.gov.tr',
		'Content-Type: text/xml; charset=utf-8',
		'SOAPAction: "http://tckimlik.nvi.gov.tr/WS/TCKimlikNoDogrula"',
		'Content-Length: '.strlen($gonder)
		));
		$gelen = curl_exec($ch);
		curl_close($ch);
	    return strip_tags($gelen);
	}
$bilgiler = array(
"isim"      => "FURKAN",
"soyisim"   => "ŞİMŞEK",
"dogumyili" => "xxxx",
"tcno"      => "xxxxx"
);
$sonuc = tcno_dogrula($bilgiler);
if($sonuc=="true"){
echo "Doğrulama başarılı";
}else{
echo "Doğrulama başarısız";
}
?>