Edit report at https://bugs.php.net/bug.php?id=64877&edit=1
ID: 64877
Updated by: yohg...@php.net
Reported by: cmbecker69 at gmx dot de
Summary: is_numeric() doesn't treat strings in binary
notation as documented
Status: Open
-Type: Documentation Problem
+Type: Bug
-Package: Documentation problem
+Package: Scripting Engine problem
Operating System: any
PHP Version: 5.4.15
Block user comment: N
Private report: N
New Comment:
Related to
https://bugs.php.net/bug.php?id=65418
Previous Comments:
------------------------------------------------------------------------
[2013-05-19 10:22:43] ramon dot ornela at gmail dot com
This is a bug, already that the is_numeric supported octal e hexadecimal,
should add support to binary annotation too.
------------------------------------------------------------------------
[2013-05-18 12:40:46] cmbecker69 at gmx dot de
Description:
------------
In PHP 5.4.15 the definition of is_numeric() is in ext/standard/type.c (line
300ff)[1]. The relevant function to do the check for arguments of
type string is is_numeric_string_ex() in Zend/zend_operators.h (line
109ff)[2]. Apparently special support for strings in binary as well as
octal notation is missing; only strings in decimal and hexadecimal
notation are recognized as such (strings in octal notation are treated
as being decimal).
I have filed this issue as documentation problem, but it might be considered an
implementation bug.
[1] <http://lxr.php.net/xref/PHP_5_4/ext/standard/type.c>
[2] <http://lxr.php.net/xref/PHP_5_4/Zend/zend_operators.h>
Test script:
---------------
var_dump(is_numeric('0b1'));
Expected result:
----------------
bool(true)
Actual result:
--------------
bool(false)
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=64877&edit=1
