Nearsoft\SeleniumClient\WebDriver::executeScriptInternal PHP Method

    private function executeScriptInternal($script, $async, $args)
    {
        if (!isset($this->_capabilities['javascriptEnabled']) || trim($this->_capabilities['javascriptEnabled']) != "1") {
            throw new \Exception("You must be using an underlying instance of WebDriver that supports executing javascript");
        }
        $params = array('script' => $script, 'args' => array());
        foreach ((array) $args as $arg) {
            if ($arg instanceof WebElement) {
                $arg = array('ELEMENT' => $arg->getElementId());
            }
            $params['args'][] = $arg;
        }
        if ($async === true) {
            $command = new Commands\Command($this, 'execute_async_script', $params);
        } else {
            $command = new Commands\Command($this, 'execute_script', $params);
        }
        $results = $command->execute();
        return $results['value'];
    }