ID: 48906
Comment by: sjoerd-php at linuxonly dot nl
Reported By: arno dot zandink at gmail dot com
Status: Open
Bug Type: Date/time related
Operating System: *
PHP Version: 5.3.0
New Comment:
The function checkdate() takes three integers as arguments. That means
that if you pass it a string, it will be cast to an int. The string
"1980 <script>alert('test');</script>" cast to an int will result in
1980.
So
checkdate("01", "01", "1980 <script>alert('test');</script>")
is equivalent to
checkdate(1, 1, 1980)
This is not a bug in PHP, rather a limitation of checkdate: it assumes
that you pass it numbers. You should check yourself that your input is
numeric.
Previous Comments:
------------------------------------------------------------------------
[2009-07-13 20:54:59] arno dot zandink at gmail dot com
hmm, indeed I changed my scripted at the last minute because I got a
deprecated notice.
My first test was as following:
<?php
$date = "01-01-1980 <script>alert('test');</script>";
$aDate_parts = split('-', $date);
print_r($aDate_parts);
var_dump(
checkdate(
$aDate_parts[1], // Month
$aDate_parts[0], // Day
$aDate_parts[2] // Year
)
);
?>
This example will result in the following array:
<?php
Array
(
[0] => 01
[1] => 01
[2] => 1980 <script>alert('test');</script>
)
?>
And it will return a boolean (true)
------------------------------------------------------------------------
[2009-07-13 19:49:18] sjoerd-php at linuxonly dot nl
Thank you for your bug report.
Your example code can be summarized as follows:
<?php var_dump(checkdate('01', '01', '1980')); ?>
I would expect this to return true, because January 1st 1980 is a valid
date. Why do you think it is an invalid date?
------------------------------------------------------------------------
[2009-07-13 19:11:20] arno dot zandink at gmail dot com
Description:
------------
checkdate returns true when the date given is not a valid date
If this is not considered a bug, perhaps adding a waring on the manual
page would be wise
Reproduce code:
---------------
---
>From manual page: function.checkdate
---
<?php
$date = "01-01-1980 <script>alert('test');</script>";
$aDate_parts = preg_split("/[\s-]+/", $date);
var_dump(
checkdate(
$aDate_parts[1], // Month
$aDate_parts[0], // Day
$aDate_parts[2] // Year
)
);
?>
Expected result:
----------------
I would expect var_dump to print a boolean (false) because the date is
not valid
Actual result:
--------------
A boolean (true) is returned with a invalid date
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=48906&edit=1
