STEP 1:
Paste this in header,
<script src='https://www.google.com/recaptcha/api.js'></script>
STEP 2:
Paste this in the form where you want the widget to appear,
<div class="g-recaptcha" data-sitekey="_______________PUBLIC_KEY_______________"></div>
STEP 3:
EDIT: The code below is updated from the video so that you only need one page. With an if/else statement, you can check if the form has been submitted. If it has, the reCAPTCHA success or error message will appear. If not, the form will appear.
<?php
// Checks if form has been submitted
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
function post_captcha($user_response) {
$fields_string = '';
$fields = array(
'secret' => '_______________PRIVATE_KEY_______________',
'response' => $user_response
);
foreach($fields as $key=>$value)
$fields_string .= $key . '=' . $value . '&';
$fields_string = rtrim($fields_string, '&');
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify');
curl_setopt($ch, CURLOPT_POST, count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);
$result = curl_exec($ch);
curl_close($ch);
return json_decode($result, true);
}
// Call the function post_captcha
$res = post_captcha($_POST['g-recaptcha-response']);
if (!$res['success']) {
// What happens when the CAPTCHA wasn't checked
echo '<p>Please go back and make sure you check the security CAPTCHA box.</p><br>';
} else {
// If CAPTCHA is successfully completed...
// Paste mail function or whatever else you want to happen here!
echo '<br><p>CAPTCHA was completed successfully!</p><br>';
}
} else { ?>
<!-- FORM GOES HERE -->
<form></form>
<?php } ?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Recaptcha Demo</title>
<script src='https://www.google.com/recaptcha/api.js'></script>
</head>
<body>
<?php
// Checks if form has been submitted
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
function post_captcha($user_response) {
$fields_string = '';
$fields = array(
'secret' => '_______________PRIVATE_KEY_______________',
'response' => $user_response
);
foreach($fields as $key=>$value)
$fields_string .= $key . '=' . $value . '&';
$fields_string = rtrim($fields_string, '&');
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify');
curl_setopt($ch, CURLOPT_POST, count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);
$result = curl_exec($ch);
curl_close($ch);
return json_decode($result, true);
}
// Call the function post_captcha
$res = post_captcha($_POST['g-recaptcha-response']);
if (!$res['success']) {
// What happens when the CAPTCHA wasn't checked
echo '<p>Please go back and make sure you check the security CAPTCHA box.</p><br>';
} else {
// If CAPTCHA is successfully completed...
// Paste mail function or whatever else you want to happen here!
echo '<br><p>CAPTCHA was completed successfully!</p><br>';
}
} else { ?>
<!-- FORM GOES HERE -->
<form action="recaptcha-v2.php" method="post">
<label for="fname">First Name*</label><br>
<input type="text" name="fname" id="fname" required autofocus><br><br>
<label for="lname">Last Name*</label><br>
<input type="text" name="lname" id="lname" required><br><br>
<label for="email">Email Address*</label><br>
<input type="email" name="email" id="email" required><br><br>
<div class="g-recaptcha" data-sitekey="_______________PUBLIC_KEY_______________"></div>
<br>
<input type="submit" id="submit" value="Submit">
</form>
<?php } ?>
</body>
</html>
https://www.makingspidersense.com/tutorials/tut-recaptcha.txt
https://www.makingspidersense.com/tutorials/recaptcha-v2.txt
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