#34765 [NEW]: Parameter checking, especially in date/time functions

From: Date: Thu, 06 Oct 2005 16:35:45 +0000
Subject: #34765 [NEW]: Parameter checking, especially in date/time functions
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-86140@lists.php.net to get a copy of this message
From:             csg at diatom dot de
Operating system: Linux, probably all
PHP version:      4.4.0
PHP Bug Type:     Feature/Change Request
Bug description:  Parameter checking, especially in date/time functions

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".



-- 
Edit bug report at http://bugs.php.net/?id=34765&edit=1
-- 
Try a CVS snapshot (php4):   http://bugs.php.net/fix.php?id=34765&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=34765&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=34765&r=trysnapshot51
Fixed in CVS:                http://bugs.php.net/fix.php?id=34765&r=fixedcvs
Fixed in release:            http://bugs.php.net/fix.php?id=34765&r=alreadyfixed
Need backtrace:              http://bugs.php.net/fix.php?id=34765&r=needtrace
Need Reproduce Script:       http://bugs.php.net/fix.php?id=34765&r=needscript
Try newer version:           http://bugs.php.net/fix.php?id=34765&r=oldversion
Not developer issue:         http://bugs.php.net/fix.php?id=34765&r=support
Expected behavior:           http://bugs.php.net/fix.php?id=34765&r=notwrong
Not enough info:             http://bugs.php.net/fix.php?id=34765&r=notenoughinfo
Submitted twice:             http://bugs.php.net/fix.php?id=34765&r=submittedtwice
register_globals:            http://bugs.php.net/fix.php?id=34765&r=globals
PHP 3 support discontinued:  http://bugs.php.net/fix.php?id=34765&r=php3
Daylight Savings:            http://bugs.php.net/fix.php?id=34765&r=dst
IIS Stability:               http://bugs.php.net/fix.php?id=34765&r=isapi
Install GNU Sed:             http://bugs.php.net/fix.php?id=34765&r=gnused
Floating point limitations:  http://bugs.php.net/fix.php?id=34765&r=float
No Zend Extensions:          http://bugs.php.net/fix.php?id=34765&r=nozend
MySQL Configuration Error:   http://bugs.php.net/fix.php?id=34765&r=mysqlcfg


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