How to turn on output buffering in Symfony2?

Question

how do I turn on output_buffering for every request to my Sf2 app?

I need this to use the the FirePHPBundle, but I would prefer to have it application-wide.

Answer 1

A good place to do this is in AppKernel's init method where the framework also registers various error handlers and debug flags:

class AppKernel extends Kernel
{
...
public function init() 
{
    parent::init(); //do not forget to call this    

    if ($this->debug) {
        ob_start(); 
    }
}
}

This of course will call ob_start only in a development environment

You need not to worry about calling ob_start here because as the php manual states:

Output buffers are stackable, that is, you may call ob_start() while another ob_start() is active. Just make sure that you call ob_end_flush() the appropriate number of times. If multiple output callback functions are active, output is being filtered sequentially through each of them in nesting order.