Description:
------------
Calling parent::_construct() from an extended class causes a fatal error when the parent doesn't have a constructor.

When you've full control over the code - it's not an issue - but when the parent comes from a code library it's becomes difficult to know if you should call the constructor.  With code libraries such as PEAR - the parent class might not have a constructor today but might have one tomorrow.



Reproduce code:
---------------
class parentClass {
  function someMethod() {
  }
}

class childClass extends parentClass {
  function childClass() {
    parent::parentClass();
  }
}

$obj = new childClass();

Expected result:
----------------
The code above should run without generating a Fatal error - at most the error should be an E_NOTICE or E_WARNING.

Actual result:
--------------
Fatal error: Can not call constructor in filename.php on Line 007