simple as f

Google Recaptcha PHP

<?php

$recaptcha = $_POST['g-recaptcha-response'];
if (!empty($recaptcha)) 
{
    $google_url = "https://www.google.com/recaptcha/api/siteverify";
    $secret = 'YOUR_SECRET';
    $ip = $_SERVER['REMOTE_ADDR'];
    $url = $google_url . "?secret=" . $secret . "&response=" . $recaptcha . "&remoteip=" . $ip;
    $res = curlgetter($url);
    $res = json_decode($res, true);	

    if($res['success']){
        $msg = $_POST["name"] ." " . $_POST["email"] . " " . $_POST["msg_subject"] . " " . $_POST['message'];
        if(!mail("to@mail.com","$subject",$msg)){
            error_log("E-posta Gönderiminde hata, şu mesaj gönderilemedi : " . $msg, 3, "/var/log/wawlabs.log");
        }
    }
}
//not valid


function curlgetter($url) {
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_TIMEOUT, 10);
    curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16");
    $curlData = curl_exec($curl);
    curl_close($curl);
    return $curlData;
}