I'm having a bit of trouble using ob_start(). It's possible to call a function before you flush the buffer, with ob_start('my_function'). Then my_function() will be called when you use ob_end_flush(), right?

But how to use it within a class, where my_function() is a method in the class? In the constructor I call ob_start() and in the destructor ob_end_flush(). And there is a method in the class my_function() which should be called. So what parameter should I write in ob_start()?

Thanks
lizciz

From what I understand of the php documentation, you cannot.
It's like the session handler functions.

As you pass the name of the function, you need a "static" defined function to be called.
Wikipedia explain way better than me what a static function is [ http://en.wikipedia.org/wiki/Method_...Static_methods ], but to make it short, a static function is something that is know to be identical to every instances of a class.
As far as I know, there are only static variables available in PHP, no classes.

So, you need to specify a function outside a class, but nothings stops you to make that function call a method of your object.

I pretty much know what static is and does, but I didn't quite understand what you meant. But it doesn't matter any more. I just realised that using output bufferts was kind of stupid in this perticular case, since they didn't bring any advantage at all, instead I made it more complicated for my self :P

Any way, thanks for your help!
Oh, and by the way. If it's actually possible to call a class method with ob_start() and somebody knows how, please tell me, in case I do need output bufferts any time in the future!

What I was saying is that as far as I understand the PHP documentation, you cannot declare a method in a class as the callback.
But you can call a function outside a class, and let that function pass the value to your object

PHP Code:

function obCallBack($src){
  return $GLOBALS['myObject']->processOb($src);
}

ob_start('obCallBak'); 


PS: I specified the function to address the GLOBALS variable scope as I'm used to.
I have several globals objects to handle db, authentication, error messages that I address this way to avoid doing global() everywhere in my apps.
No particular need to do it if it's not needed.

Ah, I see. That was pretty clever
I don't need it right now though, but maybe in the future.
Thanks

You can call class methods without having to create class object by calling ClassName::method()

Yes, I knew that.
But in the case you have several objects of the same class, how does it knows which one to use ?

I believe (but I might be wrong) that in the case of callback used by functions like the ob_start here, or session_handlers redefinition, you cannot use that syntax, due to this issue precisely.

I believe tripy is right on this one, since I tried that too myself