Edit report at https://bugs.php.net/bug.php?id=43372&edit=1
ID: 43372
Updated by: ras...@php.net
Reported by: gbml at bravogroup dot org
Summary: FILTER_VALIDATE_INT returns null for numbers with
leading zero(s)
Status: Not a bug
Type: Bug
Package: Filter related
Operating System: linux
PHP Version: 5.2.5
Assigned To: pajoye
Block user comment: N
Private report: N
New Comment:
How is it ludicrous? You understand that 08 is an invalid value in octal,
right?
The filters are all about filtering out invalid input. If you specify you want
valid integers (which are in decimal notation by default) and you also say you
want to accept integers in octal notation, then it *must* return false on a
value
which is neither an octal nor a decimal representation of an integer.
Previous Comments:
------------------------------------------------------------------------
[2013-08-05 16:21:18] kodafixed at gmail dot com
That assumes one has control over the input. If for example, the input data
comes from a form submission then it may in fact come into the program with
leading zero(es). In order to make the data in this scenario "valid" for the
test you would have to cast it or manipulate it - which makes using the
built-in function moot.
The concept that filter_var('8', FILTER_VALIDATE_INT, FILTER_FLAG_ALLOW_OCTAL)
should return 8, but filter_var('08', FILTER_VALIDATE_INT,
FILTER_FLAG_ALLOW_OCTAL) should return false is ludicrous.
------------------------------------------------------------------------
[2013-08-05 15:41:28] ras...@php.net
Don't use FILTER_VALIDATE_INT if you don't want to validate decimal notation
integers. Decimal notation integers do not have a leading 0, except for 0
itself,
of course. If you just want a filter that checks if the input is entirely made
of
digits, just use a regex. eg.
filter_var($string, FILTER_VALIDATE_REGEXP, ["options"=>["regexp"=>"/^[0-
9]+$/"]]);
------------------------------------------------------------------------
[2013-08-05 14:05:50] kodafixed at gmail dot com
FILTER_FLAG_ALLOW_OCTAL is not a feasible workaround for this issue.
echo filter_var('08', FILTER_VALIDATE_INT, FILTER_FLAG_ALLOW_OCTAL) ? "OKAY" :
"NOT OKAY";
// RESULT: "NOT OKAY"
FILTER_FLAG_ALLOW_OCTAL completely invalidates tests where the value has a
leading 0 and includes an 8 or 9.
------------------------------------------------------------------------
[2007-11-22 11:13:09] paj...@php.net
See FILTER_FLAG_ALLOW_OCTAL.
------------------------------------------------------------------------
[2007-11-22 10:54:54] gbml at bravogroup dot org
Description:
------------
Filtering input numbers with leading zero(s) and filter FILTER_VALIDATE_INT
does not produce number
Reproduce code:
---------------
// $_POST ["size"] has value "002"
filter_input (INPUT_POST, "size", FILTER_VALIDATE_INT)
Expected result:
----------------
2
Actual result:
--------------
null
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=43372&edit=1
