Equals is_callable() but also supports Core class extensions.
The support for attached methods requires
__call(), hence is_callable() always returns
for objects of classes inherited from
Core\Object with any
method name. To circumvent this problem, this function checks whether
__call() is implemented by a descendant of Object, and if not
tests whether a method of the tested name has been attached to the class.
Located at Boot.inc.php
||Name of method to test for.|
||<p>Test is based on syntax only, without actually testing an existing object.</p>|
||Output of resolved name of callable method.|
Return value summary