src/System/Input.php
public static function getRequest($name, $defaultValue = null)
    {
        if (isset($_REQUEST[$name])) {
            return $_REQUEST[$name];
        }
        return $defaultValue;
    }
public static function getRequest($name, $defaultValue = null)
    {
        if (isset($_REQUEST[$name])) {
            return $_REQUEST[$name];
        }
        return $defaultValue;
    }
Get request.

@param string $name
@param mixed $defaultValue Default null.
@return mixed