PHP code example of yaknet / yacaptcha

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

yaknet / yacaptcha example snippets

use YakNet\YaCaptcha\YaCaptcha;

// Initialize the client using environment variables
$yaCaptcha = new YaCaptcha(
    getenv('YACAPTCHA_CLIENT_ID') ?: '',
    getenv('YACAPTCHA_CLIENT_SECRET') ?: '',
    getenv('YACAPTCHA_BASE_URL') ?: 'https://developer-console.yakhub.com.tr'
);

// Render the widget script tag (typically loaded in head or footer)
echo $yaCaptcha->getScriptTag();

echo $yaCaptcha->getWidgetHtml('', [
    'auto' => 'onfocus',         // Options: 'onload', 'onfocus', 'off'
    'hideogo' => 'true',         // Hide the Altcha/yaCaptcha logo
    'class' => 'my-custom-class' // Custom CSS class for styling
]);

use YakNet\YaCaptcha\YaCaptcha;

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $payload = $_POST['altcha'] ?? '';

    $yaCaptcha = new YaCaptcha(
        getenv('YACAPTCHA_CLIENT_ID') ?: '',
        getenv('YACAPTCHA_CLIENT_SECRET') ?: '',
        getenv('YACAPTCHA_BASE_URL') ?: 'https://developer-console.yakhub.com.tr'
    );

    // Verify the payload with YakNet Auth server
    if ($yaCaptcha->verify($payload)) {
        // Captcha validation success! Proceed with form action
        echo "Validation successful! Processing form...";
    } else {
        // Captcha validation failed! Reject the request
        http_response_code(400);
        echo "Captcha validation failed. Please try again.";
        exit;
    }
}

use YakNet\YaCaptcha\YaCaptcha;

$yaCaptcha = new YaCaptcha(
    getenv('YACAPTCHA_CLIENT_ID') ?: '',
    getenv('YACAPTCHA_CLIENT_SECRET') ?: '',
    getenv('YACAPTCHA_BASE_URL') ?: 'https://developer-console.yakhub.com.tr'
);

// Protect the application automatically
// Search engine bots (Googlebot, Bingbot, Yandex, etc.) are automatically verified via 2-way DNS and allowed to index
$yaCaptcha->autoProtect('My App Title', [
    'allow_search_bots' => true // default: true
]);

// Check if an IP / User-Agent pair is a genuine, verified search bot
if ($yaCaptcha->isLegitimateSearchBot($ip, $userAgent)) {
    // Legitimate Googlebot, Bingbot, YandexBot, DuckDuckBot, etc.
}