Automatically matches up template strings by name to output handlers.
A handler can either be a string, which represents a method name of the helper, or it can be a closure or callable object.
A handler takes 3 parameters:
- the value to be filtered
- the name of the helper method that triggered the handler
- the array of options passed to the
These handlers are shared among all helper objects, and are automatically triggered
whenever a helper method renders a template string (using
_render()) and a
key which is to be embedded in the template string matches an array key of a
protected $_handlers = ;