text.php

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<?php
class XcaptchaText extends Xcaptcha
{
    public $config = array();

    public $plugin;

    function __construct()
    {
        $this->xcaptcha_handler = Xcaptcha::getInstance();
        $this->config = $this->xcaptcha_handler->loadConfig('text');
        $this->plugin = 'text';
    }

    function VerifyData()
    {
        $system = System::getInstance();
        $config = array();
        $_POST['num_chars'] = $system->cleanVars($_POST, 'num_chars', 6, 'int');
        foreach (array_keys($this->config) as $key) {
            $config[$key] = $_POST[$key];
        }
        return $config;
    }
}