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Re: bug in is_numeric [message #181461 is a reply to message #181460]

Fri, 17 May 2013 21:45

Thomas 'PointedEars'
Messages: 701
Registered: October 2010

Karma:

Senior Member

Christoph Becker wrote:

> Thomas 'PointedEars' Lahn wrote:
>> SwissCheese wrote:
>>> Isn't that what I just mentioned I did ('Looking into the source
>>> code...') above?
>>
>> I am not sure. Which source code have you been looking into?
>
> In PHP 5.4 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).
>
> […] in PHP 5.3.23 as well as PHP 5.4.7:
>
> $ php -r 'var_dump(is_numeric("08"));'
> bool(true)
>
> This is obviously caused by the missing special treatment of strings in
> octal notation in is_numeric_string_ex().
>
> [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>

Thank you. Perhaps you should file a documentation bug (as you have
experience with that) in the hopes that this will be considered an
implementation bug by The PHP Group after all.

PointedEars
--
> If you get a bunch of authors […] that state the same "best practices"
> in any programming language, then you can bet who is wrong or right...
Not with javascript. Nonsense propagates like wildfire in this field.
-- Richard Cornford, comp.lang.javascript, 2011-11-14

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[Message index]

		bug in is_numeric By: fred on Sun, 12 May 2013 14:22
		Re: bug in is_numeric By: Salvatore on Sun, 12 May 2013 15:31
		Re: bug in is_numeric By: Luuk on Sun, 12 May 2013 15:55
		Re: bug in is_numeric By: Luuk on Sun, 12 May 2013 15:58
		Re: bug in is_numeric By: Thomas Mlynarczyk on Sun, 12 May 2013 16:06
		Re: bug in is_numeric By: Denis McMahon on Sun, 12 May 2013 16:24
		Re: bug in is_numeric By: fred on Sun, 12 May 2013 17:41
		Re: bug in is_numeric By: Erwin Moller on Mon, 13 May 2013 11:50
		Re: bug in is_numeric By: fred on Mon, 13 May 2013 13:58
		Re: bug in is_numeric By: Jerry Stuckle on Mon, 13 May 2013 14:11
		Re: bug in is_numeric By: fred on Mon, 13 May 2013 14:15
		Re: bug in is_numeric By: Erwin Moller on Mon, 13 May 2013 15:29
		Re: bug in is_numeric By: J.O. Aho on Mon, 13 May 2013 17:55
		Re: bug in is_numeric By: Richard Yates on Tue, 14 May 2013 13:41
		Re: bug in is_numeric By: SwissCheese on Wed, 15 May 2013 01:43
		Re: bug in is_numeric By: Jerry Stuckle on Wed, 15 May 2013 03:01
		Re: bug in is_numeric By: SwissCheese on Wed, 15 May 2013 09:48
		Re: bug in is_numeric By: Jerry Stuckle on Wed, 15 May 2013 10:11
		Re: bug in is_numeric By: SwissCheese on Thu, 16 May 2013 22:36
		Re: bug in is_numeric By: Thomas 'PointedEars' on Wed, 15 May 2013 13:19
		Re: bug in is_numeric By: Christoph Becker on Wed, 15 May 2013 18:23
		Re: bug in is_numeric By: Thomas 'PointedEars' on Wed, 15 May 2013 18:49
		Re: bug in is_numeric By: Christoph Becker on Wed, 15 May 2013 19:58
		Re: bug in is_numeric By: Thomas 'PointedEars' on Wed, 15 May 2013 20:20
		Re: bug in is_numeric By: Christoph Becker on Wed, 15 May 2013 20:42
		Re: bug in is_numeric By: Thomas Mlynarczyk on Wed, 15 May 2013 21:53
		Re: bug in is_numeric By: Christoph Becker on Wed, 15 May 2013 22:29
		Re: bug in is_numeric By: Christoph Becker on Wed, 15 May 2013 22:40
		Re: bug in is_numeric By: Thomas 'PointedEars' on Thu, 16 May 2013 03:00
		Re: bug in is_numeric By: SwissCheese on Thu, 16 May 2013 22:16
		Re: bug in is_numeric By: Thomas 'PointedEars' on Thu, 16 May 2013 22:45
		Re: bug in is_numeric By: SwissCheese on Fri, 17 May 2013 02:52
		Re: bug in is_numeric By: Thomas 'PointedEars' on Fri, 17 May 2013 16:33
		Re: bug in is_numeric By: Christoph Becker on Fri, 17 May 2013 18:39
		Re: bug in is_numeric By: Thomas 'PointedEars' on Fri, 17 May 2013 21:45
		Re: bug in is_numeric By: Christoph Becker on Sat, 18 May 2013 12:47
		Re: bug in is_numeric By: SwissCheese on Thu, 16 May 2013 00:57
		Re: bug in is_numeric By: Jerry Stuckle on Thu, 16 May 2013 04:09
		Re: bug in is_numeric By: Christoph Becker on Thu, 16 May 2013 23:17
		Re: bug in is_numeric By: Jerry Stuckle on Fri, 17 May 2013 00:30
		Re: bug in is_numeric By: Christoph Becker on Sat, 18 May 2013 12:51
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 14:07
		Re: bug in is_numeric By: Sanders Kaufman on Sat, 18 May 2013 16:56
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 18:32
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sat, 18 May 2013 20:24
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 21:01
		Re: bug in is_numeric By: Denis McMahon on Sat, 18 May 2013 21:58
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 23:21
		Re: bug in is_numeric By: Denis McMahon on Sun, 19 May 2013 02:22
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 02:41
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 10:28
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 13:42
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 16:42
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 18:39
		Re: bug in is_numeric By: Sanders Kaufman on Tue, 21 May 2013 06:01
		Re: bug in is_numeric By: Jerry Stuckle on Tue, 21 May 2013 09:59
		Re: bug in is_numeric By: The Natural Philosoph on Sun, 19 May 2013 06:49
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 10:31
		Re: bug in is_numeric By: The Natural Philosoph on Sun, 19 May 2013 11:39
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 13:43
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 16:52
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 18:42
		Re: bug in is_numeric By: Sanders Kaufman on Tue, 21 May 2013 06:03
		Re: bug in is_numeric By: Jerry Stuckle on Tue, 21 May 2013 10:00
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 16:45
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 10:27
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 13:45
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 16:37
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 18:43
		Re: bug in is_numeric By: Sanders Kaufman on Tue, 21 May 2013 05:59
		Re: bug in is_numeric By: Jerry Stuckle on Tue, 21 May 2013 10:02
		Re: bug in is_numeric By: Sanders Kaufman on Sat, 18 May 2013 22:08
		Re: bug in is_numeric By: The Natural Philosoph on Sat, 18 May 2013 22:58
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 23:22
		Re: bug in is_numeric By: Sanders Kaufman on Sat, 18 May 2013 22:11
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 23:23
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 10:35
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 13:46
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 16:23
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 19 May 2013 18:44
		Re: bug in is_numeric By: Sanders Kaufman on Tue, 21 May 2013 05:54
		Re: bug in is_numeric By: Jerry Stuckle on Tue, 21 May 2013 10:03
		Re: bug in is_numeric By: fred on Thu, 23 May 2013 14:38
		Re: bug in is_numeric By: Arno Welzel on Sat, 01 June 2013 15:36
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 01 June 2013 18:54
		Re: bug in is_numeric By: Arno Welzel on Wed, 05 June 2013 13:25
		Re: bug in is_numeric By: Jerry Stuckle on Wed, 05 June 2013 14:34
		Re: bug in is_numeric By: Arno Welzel on Wed, 05 June 2013 15:02
		Re: bug in is_numeric By: Jerry Stuckle on Wed, 05 June 2013 16:30
		OT: What you say is not always what you mean (was: Re: bug in is_numeric) By: Arno Welzel on Wed, 05 June 2013 18:20
		Re: OT: What you say is not always what you mean By: Jerry Stuckle on Wed, 05 June 2013 18:40
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sat, 18 May 2013 19:51
		Re: bug in is_numeric By: Sanders Kaufman on Sat, 18 May 2013 22:13
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sat, 18 May 2013 22:49
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 10:24
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sun, 19 May 2013 10:40
		Re: bug in is_numeric By: The Natural Philosoph on Sun, 19 May 2013 11:43
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 19 May 2013 16:29
		Re: bug in is_numeric By: Norman Peelman on Sat, 18 May 2013 18:53
		Re: bug in is_numeric By: SwissCheese on Thu, 16 May 2013 22:41
		Re: bug in is_numeric By: Daniel Pitts on Mon, 13 May 2013 15:35
		Re: bug in is_numeric By: Denis McMahon on Mon, 13 May 2013 20:26
		Re: bug in is_numeric By: Denis McMahon on Mon, 13 May 2013 20:15
		Re: bug in is_numeric By: Robert Heller on Sun, 12 May 2013 18:03
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sun, 12 May 2013 16:03
		Re: bug in is_numeric By: fred on Sun, 12 May 2013 17:34
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sun, 12 May 2013 17:40
		Re: bug in is_numeric By: Luuk on Sun, 12 May 2013 19:51
		Re: bug in is_numeric By: Sanders Kaufman on Sun, 12 May 2013 16:47
		Re: bug in is_numeric By: Luuk on Sun, 12 May 2013 16:56
		Re: bug in is_numeric By: Thomas Mlynarczyk on Sun, 12 May 2013 17:05
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sun, 12 May 2013 17:38
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sun, 12 May 2013 17:46
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 12 May 2013 18:11
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sun, 12 May 2013 18:39
		Re: bug in is_numeric By: Jerry Stuckle on Sun, 12 May 2013 20:51
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sun, 12 May 2013 23:27
		Re: bug in is_numeric By: Jerry Stuckle on Mon, 13 May 2013 00:35
		Re: bug in is_numeric By: Thomas 'PointedEars' on Mon, 13 May 2013 09:07
		Re: bug in is_numeric By: Jerry Stuckle on Mon, 13 May 2013 13:02
		Re: bug in is_numeric By: Thomas 'PointedEars' on Mon, 13 May 2013 14:57
		Re: bug in is_numeric By: Thomas 'PointedEars' on Mon, 13 May 2013 15:10
		Re: bug in is_numeric By: Jerry Stuckle on Mon, 13 May 2013 17:52
		Re: bug in is_numeric By: Thomas 'PointedEars' on Mon, 13 May 2013 18:28
		Re: bug in is_numeric By: SwissCheese on Thu, 16 May 2013 22:28
		Re: bug in is_numeric By: Thomas 'PointedEars' on Thu, 16 May 2013 22:33
		Re: bug in is_numeric By: SwissCheese on Fri, 17 May 2013 02:34
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sat, 18 May 2013 08:28
		Re: bug in is_numeric By: Norman Peelman on Sat, 18 May 2013 12:00
		Re: bug in is_numeric By: Luuk on Sat, 18 May 2013 12:18
		Re: bug in is_numeric By: Tim Streater on Sat, 18 May 2013 12:20
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 12:47
		Re: bug in is_numeric By: The Natural Philosoph on Sat, 18 May 2013 13:05
		Re: bug in is_numeric By: Jerry Stuckle on Sat, 18 May 2013 14:16
		Re: bug in is_numeric By: Thomas 'PointedEars' on Sat, 18 May 2013 14:14
		Re: bug in is_numeric By: Sandman on Tue, 14 May 2013 08:34
		Re: bug in is_numeric By: fred on Tue, 14 May 2013 13:47
		Re: bug in is_numeric By: Denis McMahon on Tue, 14 May 2013 14:54
		Re: bug in is_numeric By: Sandman on Wed, 15 May 2013 06:05
		Re: bug in is_numeric By: Jerry Stuckle on Wed, 15 May 2013 10:27
		Re: bug in is_numeric By: Erwin Moller on Wed, 15 May 2013 11:11

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