Entry

To use ob_gzhandler() is zlib needed?

Mar 7th, 2003 04:01
Henrik Hansen, Jon Kriek, http://www.php.net/manual/en/function.ob-gzhandler.php

Yes it is, you need to compile php with "--with-zlib" (or enable the 
zlib dll in php.ini on windows) to be able to use the function.
Quote from the manual:
Note that using ini.zlib.output_compression is preferred over 
ob_gzhandler().