Description:
------------
Giving some functions  -like mktime()- invalid parameters, the result will be unpredictable - at least from users point of view (see Bug-ID 34760, marked as "Bogus" - sorry for my mistakes there).

Suggestion:
I suggest to emit at least a warning, if functions internal to PHP get wrong parameters (like an invalid [octal] number)
- instead of silently ignoring the problem and return unexpected results (as it is currently the case).

Rem.: Of course, numbers with leading zero as in the code example below will be treated as octal numbers and digit "8" is not allowed there - but usually date and time values *will* be given in a 2 or 4 digit format, so using mktime() this way is at least error prone.
So, a warning emited in such a case would be ***very*** fine resp. would help, to find such errors easier.


Reproduce code:
---------------
<?php mktime(15,0,0,10,08,2005); ?>

Expected result:
----------------
A Timestamp for "Oct-08-2005 15:00", e.g. the number "1 128 776 400" (without the spaces, of course).


Actual result:
--------------
A Timestamp for "Sep-30-2005 15:00", e.g. number "1 128 085 200".