src/Payum/Payex/Api/AgreementApi.php
public function check(array $parameters)
    {
        $parameters['accountNumber'] = $this->options['account_number'];

        $parameters['hash'] = $this->calculateHash($parameters, array(
            'accountNumber',
            'agreementRef',
        ));

        return $this->call('Check', $parameters, $this->getPxAgreementWsdl());
    }
public function check(array $parameters)
    {
        $parameters['accountNumber'] = $this->options['account_number'];

        $parameters['hash'] = $this->calculateHash($parameters, array(
            'accountNumber',
            'agreementRef',
        ));

        return $this->call('Check', $parameters, $this->getPxAgreementWsdl());
    }
@param array $parameters

@return array