我正在尝试将当前用户的ip、用户名、登录时间等事件写入日志文件。我已经使用WordPress钩子在php中为各种事件构建了函数，但我不知道如何将它们组合到我的日志函数中。以下是我的代码：

全局$active\\u用户；

      /**
        * function to get loggedin user\'s username
        */
        add_action(\'init\', \'log_file_setup\');
        function log_file_setup(){

        $path = dirname(__FILE__) . \'/log.txt\';

        $file = fopen($path,"w+");
        $person = "John\\n";


        file_put_contents($path, $person, FILE_APPEND );
        }

       /**
        * function to get loggedin user\'s username
        */

        function get_username(){

         if(is_user_logged_in()){
         $active_user = wp-get-current-user(); 
         $username = $active_user->login;

         return  $username;
         }
        }

       /**
        * function to get loggedin user\'s Role(s)
        */

        function get_userole(){

         if(is_user_logged_in()){
         $active_user = wp-get-current-user(); 

         // I have cast this into an array because the user may have multiple roles
         $userroles = ( array ) $active_user->roles; 
          return $userroles;
         }
        }