ob_list_handlers List all output handlers in use Description arrayob_list_handlers This will return an array with the output handlers in use (if any). If output_buffering is enabled, ob_list_handlers will return "default output handler". <function>ob_list_handlers</function> example ]]> The above example will output: default output handler ) Array ( [0] => ob_gzhandler ) ]]> See also ob_end_clean, ob_end_flush, ob_get_flush, ob_start.