name : UserAgentInterface.php <?php namespace epsdonatj\UserAgent; interface UserAgentInterface { /** * @return string|null * @see \epsdonatj\UserAgent\Platforms for a list of tested platforms */ public function platform(); /** * @return string|null * @see \epsdonatj\UserAgent\Browsers for a list of tested browsers. */ public function browser(); /** * The version string. Formatting depends on the browser. * * @return string|null */ public function browserVersion(); }