What are the best practices for implementing a PHP rechencaptcha to prevent spam while maintaining user engagement?

To prevent spam while maintaining user engagement, one of the best practices is to implement a reCAPTCHA system in PHP. This helps verify that the user is a human and not a bot, reducing the amount of spam submissions. By integrating reCAPTCHA, you can protect your forms from automated spam attacks without disrupting the user experience. 

<?php
// Include the reCAPTCHA library
require_once('recaptchalib.php');

// Your reCAPTCHA site key
$siteKey = 'YOUR_SITE_KEY';

// Your reCAPTCHA secret key
$secret = 'YOUR_SECRET_KEY';

// Create a new reCAPTCHA object
$recaptcha = new ReCaptcha($secret);

// Verify the reCAPTCHA response
$response = $recaptcha->verify($_POST['g-recaptcha-response']);

if ($response->isSuccess()) {
    // reCAPTCHA verification successful, process the form data
    // Your code here
} else {
    // reCAPTCHA verification failed, display an error message
    echo 'reCAPTCHA verification failed';
}
?>

Keywords

reCAPTCHA PHP spam prevention user engagement implementation

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