\PayTech\Config::setApiKey('your_api_key');
    \PayTech\Config::setApiSecret('your_api_secret');

    /*
     * you can set one of this two following parameters
     * Notice : LiveMode === Production mode
     * !!! By default LiveMode is enable (true) !!!
    */

    \PayTech\Config::setTestMode(true);
    \PayTech\Config::setLiveMode(false);

    /*
     * The PayTech\Enums\Currency class defined authorized currencies
     * You can change XOF (in the following example) by USD, CAD, GBP or MAD
     * !!! Notice that XOF is the default currency !!!
    */

    \PayTech\Config::setCurrency(\PayTech\Enums\Currency::XOF);

    /* !!! Note that if you decide to set the ipn_url, it must be in https !!! */

    \PayTech\Config::setIpnUrl('your_ipn_url');
    \PayTech\Config::setSuccessUrl('your_success_url');
    \PayTech\Config::setCanceUrl('your_cancel_url');

    /*
     * if you want the mobile success or cancel page, you can set
     * the following parameter
    */

    \PayTech\Config::setIsMobile(true);

    $article_price = 15000;
    $article = new \PayTech\Invoice\InvoiceItem('article_name', $article_price, 'command_name', 'ref_command');

    /* You can also add custom data or fields like this */

    \PayTech\CustomField::set('your_field_name', 'your_field_value');

    /* Make the payment request demand to the API */

    \PayTech\PayTech::send($article);

    /* Get the API Response */

    $response = [
        'success'      => \PayTech\ApiResponse::getSuccess(),
        'errors'       => \PayTech\ApiResponse::getErrors(),
        'token'        => \PayTech\ApiResponse::getToken(),
        'redirect_url' => \PayTech\ApiResponse::getRedirectUrl(),
    ];