语法：

steam_get_user_steam_id();

返回： 实数

描述

You can use this function to return the unique Steam user id of the user currently logged into the Steam client. This is a unique 64 bit value that can be used to identify individual users and not their on screen user name (this can be found using the function steam_get_persona_name).

例如：

if steam_initialised()
   {
   global.u_id = steam_get_user_steam_id();
   }

The above code will set a global variable to the current users unique Steam ID if the Steam client API is correctly initialised.