use PaylineTools\PaylineToolsClient;

    // create an instance
    $plnTools = new PaylineToolsClient($proxy_host, $proxy_port, $proxy_login, $proxy_password [, $pathLog= null[, $logLevel = Logger::INFO]]);
    /*
    If $pathLog is null, log files will be written under default logs directory. Fill with your custom log files path
    */

    // call a web service, for example getPaymentMeans
    $getPaymentMeansResponse = $plnTools->getPaymentMeans();