ob_list_handlers

List all output handlers in use.

ob_list_handlers Function synopsis

ob_list_handlers(): array

Parameters

ob_list_handlers does not take any parameters.

Return value

Typearray

This will return an array with the output handlers in use (if any).

If output_bufferingis enabled and no output_handleris set, or no callback or null was passed to ob_start, "default output handler" is returned. Enabling output_buffering and setting an output_handler is equivalent to passing an internal (built-in) function to ob_start.

If a callable was passed to ob_start, the fully qualified name of the callable is returned. If the callable is an object implementing invoke(), the fully qualified name of the object's invoke() method is returned. If the callable is a Closure, "Closure::__invoke" is returned.