With Composer, add this line to your require section :
"phelium/recaptcha": "dev-master"
Then run composer update.
require 'vendor/autoload.php';
use Phelium\Component\reCAPTCHA;
To initialize reCAPTCHA, you must provide your site key and your secret key.
There is two possible ways :
$reCAPTCHA = new reCAPTCHA('your site key', 'your secret key');
or
$reCAPTCHA = new reCAPTCHA();
$reCAPTCHA->setSiteKey('your site key');
$reCAPTCHA->setSecretKey('your secret key');
To generate the script tag, use :
$reCAPTCHA->getScript();
To generate the HTML block, use in your form :
$reCAPTCHA->getHtml();
Checking the server side, in your form validation script :
if ($reCAPTCHA->isValid($_POST['g-recaptcha-response']))
{
// do whatever you want, the captcha is valid
}
else
{
// Show errors
var_dump($reCAPTCHA->getErrorCodes());
}
Several themes are available : light (default) or dark.
$reCAPTCHA->setTheme('dark');
You can change the language of reCAPTCHA. Check https://developers.google.com/recaptcha/docs/language for more information.
By default, the language is automatically detected.
$reCAPTCHA->setLanguage('it');
Several types are available : image (default) or audio.
$reCAPTCHA->setType('audio');
Two sizes are available : normal (default) or compact.
$reCAPTCHA->setType('compact');
Here is an example :
<?php
require 'vendor/autoload.php';
use Phelium\Component\reCAPTCHA;
$reCAPTCHA = new reCAPTCHA('your site key', 'your secret key');
?>
<html>
<head>
<title>reCAPTCHA example</title>
<?php echo $reCAPTCHA->getScript(); ?>
</head>
<body>
<?php
if (isset($_POST['name']))
{
var_dump($_POST);
if ($reCAPTCHA->isValid($_POST['g-recaptcha-response']))
{
echo '<br>-- Captcha OK ! --<br>';
}
}
?>
<form action="#" method="POST">
<input type="text" name="name" placeholder="name">
<?php echo $reCAPTCHA->getHtml(); ?>
<input type="submit">
</form>
</body>
</html>