contact_form.php

contact_form.php

<?php
// Check for empty fields
if(empty($_POST['name'])        ||
   empty($_POST['email'])       ||
   empty($_POST['message'])     ||
   empty($_POST['response'])    ||
   !filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
   {
   echo "No arguments Provided!";
   return false;
   }

$name = strip_tags(htmlspecialchars($_POST['name']));
$email_address = strip_tags(htmlspecialchars($_POST['email']));
$message = strip_tags(htmlspecialchars($_POST['message']));

// Log
$log =  "--------------------------------------------------".PHP_EOL.
        "user: ".$_SERVER['REMOTE_ADDR'].' - '.date("F j, Y, g:i a").PHP_EOL.
        "name: ".$name.PHP_EOL.
        "email_address: ".$email_address.PHP_EOL.
        "message: ".$message.PHP_EOL;
file_put_contents('./log_'.date("Y.n.j").'.txt', $log, FILE_APPEND);

// RECAPTCHA VARS
$secret = "<recaptcha_secret_goes_here>";
$response = $_POST['response'];
$remoteip = $_SERVER['REMOTE_ADDR'];
$url = "https://www.google.com/recaptcha/api/siteverify?secret=$secret&response=$response&remoteip=$remoteip";

$captcha_response = file_get_contents($url);

if($captcha_response['success'] == true) {
        $log =  "bot: no".PHP_EOL.
                "--------------------------------------------------".PHP_EOL;    
        file_put_contents('./log_'.date("Y.n.j").'.txt', $log, FILE_APPEND);

        // Create the email and send the message
        $to = '<your_email_address>';
        $email_subject = "My website contact form: $name";
        $email_body = "You have received a new message from your website contact form.\n\n"."Here are the details:\n\nName: $name\n\nEmail: $email_address\n\nMessage:\n\n$message";
        $headers = "From: noreply@<my_company>.be\n";
        $headers .= "Reply-To: $email_address";
        mail($to,$email_subject,$email_body,$headers);
        return true;    
} else {
        $log =  "bot: yes".PHP_EOL.
                "--------------------------------------------------".PHP_EOL; 
        file_put_contents('./log_'.date("Y.n.j").'.txt', $log, FILE_APPEND);

        echo "Captcha not validated by Google!";
        return false;
}
?>