setApiKey();
$valid_order =
    array(
        'line_items'=> array(
            array(
                'name'        => 'Box of Cohiba S1s',
                'description' => 'Imported From Mex.',
                'unit_price'  => 20000,
                'quantity'    => 1,
                'sku'         => 'cohb_s1',
                'category'    => 'food',
                'tags'        => array('food', 'mexican food')
                )
           ),
          'currency'    => 'mxn',
          'metadata'    => array('test' => 'extra info'),
          'charges'     => array(
              array(
                  'payment_source' => array(
                      'type'       => 'oxxo_cash',
                      'expires_at' => strtotime(date("Y-m-d H:i:s")) + "36000"
                   ),
                   'amount' => 20000
                )
            ),
            'currency'      => 'mxn',
            'customer_info' => array(
                'name'  => 'John Constantine',
                'phone' => '+5213353319758',
                'email' => '[email protected]'
            )
        );

try {
  $order = \Conekta\Order::create($valid_order);
} catch (\Conekta\ProcessingError $e){ 
  echo $e->getMessage();
} catch (\Conekta\ParameterValidationError $e){
  echo $e->getMessage();
} finally (\Conekta\Handler $e){
  echo $e->getMessage();
}