How to tell if ob_gzhandler is working?

Question

How can I check to see if

ob_start("ob_gzhandler");

is working and test the difference with or without it?

Thanks,

Answer 1

You can use ob_list_handlers to get an array of handlers that are in use.

Answer 2

Using the "Net" tab of Firebug, check to see if the Content-Encoding header has a value of gzip or deflate.

Or, try the online gzip test.

See this question.