A question about user defined function calling method

Hi, I would like to ask, is that possible that when a user define a function, for example, abc() The function will be auto detect how the user call the function? For simple example: $a=abc(), so that, the function will auto detect it, and then used by "Return" a value to the variable. If user call like this: abc(), the function will print the result, not "Returned" Is that possible?? Thanks. From, Gordon _________________________________________________________________ 使用 MSN Messenger，與朋友在線上聊天: http://messenger.microsoft.com/tc