php man page for ob_list_handlers

OB_LIST_HANDLERS(3)							 1						       OB_LIST_HANDLERS(3)

ob_list_handlers - List all output handlers in use

SYNOPSIS
       array ob_list_handlers (void  )

DESCRIPTION
	Lists all output handlers in use.

RETURN VALUES
	This  will return an array with the output handlers in use (if any). If output_buffering is enabled or an anonymous function was used with
       ob_start(3), ob_list_handlers(3) will return "default output handler".

EXAMPLES
       Example #1

	      ob_list_handlers(3) example

	      <?php
	      //using output_buffering=On
	      print_r(ob_list_handlers());
	      ob_end_flush();

	      ob_start("ob_gzhandler");
	      print_r(ob_list_handlers());
	      ob_end_flush();

	      // anonymous functions
	      ob_start(function($string) { return $string; });
	      print_r(ob_list_handlers());
	      ob_end_flush();
	      ?>

	      The above example will output:

	      Array
	      (
		  [0] => default output handler
	      )

	      Array
	      (
		  [0] => ob_gzhandler
	      )

	      Array
	      (
		  [0] => Closure::__invoke
	      )

SEE ALSO
       ob_end_clean(3), ob_end_flush(3), ob_get_flush(3), ob_start(3).

PHP Documentation Group 												       OB_LIST_HANDLERS(3)