require 'vendor/autoload.php';
        
        //if you want to change the namespace/path from 'UbexPay' - lines[1-5] - to your desired name,
        i.e. (use UbexPay\Api\Amount; to use MyDomain\Api\Amount;), then you must change the folders name that holds
        the API classes as well as change the property 'UbexPay' in (autoload->psr-0) of (php-sdk/composer.json) file to your
        desired name and run "composer dump-autoload" command from sdk root
                                        
        use UbexPay\Api\Payer;
        use UbexPay\Api\Amount;
        use UbexPay\Api\Transaction;
        use UbexPay\Api\RedirectUrls;
        use UbexPay\Api\Payment;
                                        
        //Payer Object
        $payer = new Payer();
        $payer->setPaymentMethod('UbexPay'); //preferably, your system name, example - UbexPay
                                        
        //Amount Object
        $amountIns = new Amount();
        $amountIns->setTotal(20)->setCurrency('DZD'); //must give a valid currency code and must exist in merchant wallet list
                                        
        //Transaction Object
        $trans = new Transaction();
        $trans->setAmount($amountIns);
                                        
        //RedirectUrls Object
        $urls = new RedirectUrls();
        $urls->setSuccessUrl('http://your-merchant-domain.com/example-success.php') //success url - the merchant domain page,
        to redirect after successful payment, see sample example-success.php file in sdk root,
        example - http://ubexpay.com/UbexPay_sdk/example-success.php
        ->setCancelUrl('http://your-merchant-domain.com/'); //cancel url - the merchant domain page, to redirect after
        cancellation of payment, example -  http://ubexpay.com/UbexPay_sdk/
                                        
        //Payment Object
        $payment = new Payment();
        $payment->setCredentials([ //client id & client secret, see merchants->setting(gear icon)
        'client_id' => 'place your client id here', //must provide correct client id of an express merchant
        'client_secret' => 'place your client secret here' //must provide correct client secret of an express merchant
        ])->setRedirectUrls($urls)
        ->setPayer($payer)
        ->setTransaction($trans);
                                        
        try {
         $payment->create(); //create payment
         header("Location: ".$payment->getApprovedUrl()); //checkout url
        } catch (Exception $ex) {
         print $ex;
         exit;
        }
                                    
                                    
                                    
                                    

    
        
                      
        use UbexPay\Api\Payer;
        use UbexPay\Api\Amount;
        use UbexPay\Api\Transaction;
        use UbexPay\Api\RedirectUrls;
        use UbexPay\Api\Payment;
                                        
        //Payer Object
        $payer = new Payer();
        $payer->setPaymentMethod('UbexPay'); //preferably, your system name, example - UbexPay
                                        
        //Amount Object
        $amountIns = new Amount();
        $amountIns->setTotal(20)->setCurrency('DZD'); //must give a valid currency code and must exist in merchant wallet list
                                        
        //Transaction Object
        $trans = new Transaction();
        $trans->setAmount($amountIns);
                                        
        //RedirectUrls Object
        $urls = new RedirectUrls();
        $urls->setSuccessUrl('http://your-merchant-domain.com/example-success.php') //success url - the merchant domain page,
        to redirect after successful payment, see sample example-success.php file in sdk root,
        example - http://ubexpay.com/UbexPay_sdk/example-success.php
        ->setCancelUrl('http://your-merchant-domain.com/'); //cancel url - the merchant domain page, to redirect after
        cancellation of payment, example -  http://ubexpay.com/UbexPay_sdk/