Re: Multiple callback_outputs for ob_start

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Chris Shiflett wrote:
Mathijs wrote:

How can i add more callback_outputs to ob_start?

I want to have both: ob_start('switchContent');
and: ob_start('ob_gzhandler');


I don't think you can, but you could have a single function that calls both, then specify that function in ob_start().

I think you can by simply stacking multiple output buffers on top
of each other:

ob_start('switchContent'); // first buffer, for first callback
ob_start('ob_gzhandler');  // second buffer, for second callback	

take care to define the handlers in the 'right' order
(the order that they are run in may be important to your output/code)

// rest of code.

I implemented a class once that stacks a list of callbacks
which could then all be run by its callback handler, psuedo-code:

class CB
{
	private static $cbs = array();

	public static function addCB($cb)
	{
		if (is_callable($cb)) {
			self::$cbs[] = $cb;
		}
	}

	public static function run($data)
	{
		foreach (self::$cbs as $cb) {
			$data = call_user_func($cb, $data);
		}

		return $data;
	}
}

ob_start( array('CB','run') );


Chris


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