TC Kimlik Sorgulama-Doğrulama Yasal mı?

<?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"      => "xx xx",
"soyisim"   => "xxx",
"dogumyili" => "xxxx",
"tcno"      => "xxxxx"
);
 
$sonuc = tcno_dogrula($bilgiler);
 
if($sonuc=="true"){
echo "Doğrulama başarılı";
}else{
echo "Doğrulama başarısız";
}
?>