Description:
------------
If class B extends class A, and overrides a method of class A, debug_backtrace() reports that the method of class A is a method of class B instead.

Reproduce code:
---------------
class A {
	function __construct() {
		$bt = debug_backtrace();
		foreach ($bt as $t)
			print 
				$t['class'].'::'.
				$t['function'].'<br>';
	}
}

class B extends A {
	function __construct() {
		parent::__construct();
	}
}

$b = new B();

Expected result:
----------------
Expected output:

A::__construct
B::__construct


Actual result:
--------------
Actual output:

B::__construct
B::__construct