1. Go to this page and download the library: Download wackowiki/freecap library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
wackowiki / freecap example snippets
use FreeCap\FreeCap;
use FreeCap\SessionAdapter;
// 1. Initialize the adapter with your session mechanism
// SessionAdapter accepts native arrays or objects with magic properties (like WackoWiki's)
$adapter = new SessionAdapter($_SESSION);
// 2. Optional: Pass custom configuration
$config = [
'use_dict' => 1,
'bg_type' => 1,
'output' => 'webp',
];
// 3. Generate and render
$captcha = new FreeCap($adapter, $config);
$captcha->render(); // Exits script after sending image
use FreeCap\FreeCap;
use FreeCap\SessionAdapter;
// When the form page is loaded, flag that the CAPTCHA is active:
// $adapter = new SessionAdapter($_SESSION);
// $adapter->set('freecap_shown', 1);
// On form submission:
$adapter = new SessionAdapter($_SESSION);
$captcha = new FreeCap($adapter);
$input = $_POST['captcha'] ?? '';
if ($captcha->validate($input)) {
echo "CAPTCHA passed!";
} else {
echo "CAPTCHA failed. Please try again.";
}
$config = [
'asset_path' => '/path/to/resources', // Defaults to ../resources
'site_tags' => null, // Array of strings to display on the image
'tag_pos' => 1, // 0: top, 1: bottom, 2: both
'algo' => 'sha1', // 'sha1', 'sha256', 'sha512'
'output' => 'webp', // 'avif', 'gif', 'jpg', 'png', 'webp'
'use_dict' => 1, // 0: random string, 1: dictionary file
'max_word_length' => 6, // Maximum characters in the CAPTCHA
'col_type' => 1, // 0: one color, 1: different color per letter
'max_attempts' => 15, // Max refresh attempts before lockout
'bg_type' => 1, // 0: transparent, 1: grid, 2: squiggles, 3: morphed blocks
'blur_bg' => true, // Blur the background?
'morph_bg' => true, // Morph the background?
'merge_type' => 0, // 0: merge CAPTCHA with bg, 1: write over bg
];
$captcha = new FreeCap($adapter, $config);
use FreeCap\AdapterInterface;
class MyCacheAdapter implements AdapterInterface
{
private Cache $cache;
public function __construct(Cache $cache)
{
$this->cache = $cache;
}
public function get(string $key, mixed $default = null): mixed
{
return $this->cache->get('captcha_' . $key, $default);
}
public function set(string $key, mixed $value): void
{
$this->cache->set('captcha_' . $key, $value);
}
public function delete(string $key): void
{
$this->cache->delete('captcha_' . $key);
}
}