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Groups > comp.lang.php > #9382
| From | Jerry Stuckle <jstucklex@attglobal.net> |
|---|---|
| Newsgroups | comp.lang.php |
| Subject | Re: bug in is_numeric |
| Date | 2013-05-16 00:09 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <kn1lvb$28f$1@dont-email.me> (permalink) |
| References | (6 earlier) <MPG.2bfb05badc66f3d69896b0@news.virginmedia.com> <jif4p8lqcjcin9inpluivhc8rcj96qn21d@4ax.com> <kmup14$3cp$2@dont-email.me> <kmutiq$ld3$1@dont-email.me> <kn1ame$mn8$1@dont-email.me> |
On 5/15/2013 8:57 PM, SwissCheese wrote:
> On 05/14/2013 11:01 PM, Jerry Stuckle wrote:
>> On 5/14/2013 9:43 PM, SwissCheese wrote:
>>> On 05/14/2013 09:41 AM, Richard Yates wrote:
>>>> On Mon, 13 May 2013 15:15:06 +0100, fred <email@address.com> wrote:
>>>>
>>>>> In article <kmqs3c$e3s$1@dont-email.me>, jstucklex@attglobal.net
>>>>> says...
>>>>>> As others have shown, is_numeric() returns false in several versions
>>>>>> of PHP.
>>>>>>
>>>>>
>>>>> I have just typed in an exact copy of the test in my message of
>>>>> 02:58pm
>>>>> When you have run that on an apache PHP installation of the same
>>>>> version
>>>>> PHP as I listed (5.3.6) under windows7-64 bit - get back to me.
>>>>>
>>>>> Otherwise I'm done repeating myself.
>>>>>
>>>>
>>>> <?php
>>>> $a = 'x11.11c';
>>>> if(is_numeric($a)) { echo 'oops - a problem'; } else { echo 'okay'; }
>>>> ?>
>>>>
>>>> Prints 'okay'
>>>>
>>>> Windows 7 Home Premium 64 bit, PHP5.3.4, Apache2.2.17, (WAMP)
>>>>
>>>
>>> That's backwards... you want:
>>>
>>> $a = 'x11.11c';
>>> if(is_numeric($a)) { echo 'ok'; } else { echo 'not okay'; }
>>>
>>> Sorry, hit send too quick!
>>>
>>
>> No, Richard had it correct. The if statement returns false, which is
>> 'ok'. Your code would return 'not ok' - which is incorrect.
>>
>
> If $a ('x11.11c') is numeric then it would return 'ok' but it is not so
> it returns 'not ok'. 'x11.11c' is not hexadecimal, it lacks the leading
> '0' and contains a decimal/period.
>
'ok' is correct in this instance. is_numeric() should NOT return a
numeric value; if it did, that would be incorrect.
You are confusing 'not numeric' with 'not ok'. The first would return
whether the value is numeric or not. The second returns whether the
function returns the correct value or not.
The correct value is that the parameter is NOT a valid numeric value, so
'ok' (the function worked correctly) is the correct response.
> php > $tests =
> array("42",1337,"0xf4c3b00c","x11.11c","0x11.11c","0x1111c","0b1010",
> "10101010101010101010101010101010101010101010101010101010101010101010101010101010101010");
>
> php > foreach ($tests as $a) { if(is_numeric($a)) { echo "$a is
> numeric".PHP_EOL; } else { echo "$a is not numeric".PHP_EOL; } }
> 42 is numeric
> 1337 is numeric
> 0xf4c3b00c is numeric
> x11.11c is not numeric
> 0x11.11c is not numeric
> 0x1111c is numeric
> 0b1010 is not numeric
> 10101010101010101010101010101010101010101010101010101010101010101010101010101010101010
> is numeric
>
>
> From what I can tell from the source code (of PHP) there is no code
> to handle binary strings as explained in the function definition at
> php.net. But I guess by definition it can only be 0's and 1's as seen
> above.
>
>
>
Binary strings are a completely different problem introduces by the
troll 'Pointed Head' which has nothing to do with the OP's problem. But
then 'Pointed Head' is notorious (in several newsgroups) for hijacking
threads for his own purpose.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
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bug in is_numeric fred <email@address.com> - 2013-05-12 15:22 +0100
Re: bug in is_numeric Salvatore <sal@yojimbo.hack.invalid> - 2013-05-12 15:31 +0000
Re: bug in is_numeric Luuk <luuk@invalid.lan> - 2013-05-12 17:55 +0200
Re: bug in is_numeric Luuk <luuk@invalid.lan> - 2013-05-12 17:58 +0200
Re: bug in is_numeric Thomas Mlynarczyk <thomas@mlynarczyk-webdesign.de> - 2013-05-12 18:06 +0200
Re: bug in is_numeric Denis McMahon <denismfmcmahon@gmail.com> - 2013-05-12 16:24 +0000
Re: bug in is_numeric fred <email@address.com> - 2013-05-12 18:41 +0100
Re: bug in is_numeric Erwin Moller <erwinmollerusenet@xs4all.nl> - 2013-05-13 13:50 +0200
Re: bug in is_numeric fred <email@address.com> - 2013-05-13 14:58 +0100
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-13 10:11 -0400
Re: bug in is_numeric fred <email@address.com> - 2013-05-13 15:15 +0100
Re: bug in is_numeric Erwin Moller <erwinmollerusenet@xs4all.nl> - 2013-05-13 17:29 +0200
Re: bug in is_numeric "J.O. Aho" <user@example.net> - 2013-05-13 19:55 +0200
Re: bug in is_numeric Richard Yates <richard@yatesguitar.com> - 2013-05-14 06:41 -0700
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-14 21:43 -0400
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-14 23:01 -0400
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-15 05:48 -0400
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-15 06:11 -0400
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-16 18:36 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-15 15:19 +0200
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-15 20:23 +0200
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-15 20:49 +0200
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-15 21:58 +0200
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-15 22:20 +0200
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-15 22:42 +0200
Re: bug in is_numeric Thomas Mlynarczyk <thomas@mlynarczyk-webdesign.de> - 2013-05-15 23:53 +0200
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-16 00:29 +0200
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-16 00:40 +0200
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-16 05:00 +0200
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-16 18:16 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-17 00:45 +0200
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-16 22:52 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-17 18:33 +0200
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-17 20:39 +0200
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-17 23:45 +0200
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-18 14:47 +0200
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-15 20:57 -0400
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-16 00:09 -0400
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-17 01:17 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-16 20:30 -0400
Re: bug in is_numeric Christoph Becker <cmbecker69@gmx.de> - 2013-05-18 14:51 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 10:07 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-18 11:56 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 14:32 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-18 22:24 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 17:01 -0400
Re: bug in is_numeric Denis McMahon <denismfmcmahon@gmail.com> - 2013-05-18 21:58 +0000
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 19:21 -0400
Re: bug in is_numeric Denis McMahon <denismfmcmahon@gmail.com> - 2013-05-19 02:22 +0000
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 22:41 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 05:28 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 09:42 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 11:42 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 14:39 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-21 01:01 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-21 05:59 -0400
Re: bug in is_numeric The Natural Philosopher <tnp@invalid.invalid> - 2013-05-19 07:49 +0100
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 05:31 -0500
Re: bug in is_numeric The Natural Philosopher <tnp@invalid.invalid> - 2013-05-19 12:39 +0100
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 09:43 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 11:52 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 14:42 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-21 01:03 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-21 06:00 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 11:45 -0500
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 05:27 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 09:45 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 11:37 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 14:43 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-21 00:59 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-21 06:02 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-18 17:08 -0500
Re: bug in is_numeric The Natural Philosopher <tnp@invalid.invalid> - 2013-05-18 23:58 +0100
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 19:22 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-18 17:11 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 19:23 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 05:35 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 09:46 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 11:23 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-19 14:44 -0400
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-21 00:54 -0500
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-21 06:03 -0400
Re: bug in is_numeric fred <email@address.com> - 2013-05-23 15:38 +0100
Re: bug in is_numeric Arno Welzel <usenet@arnowelzel.de> - 2013-06-01 17:36 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-06-01 14:54 -0400
Re: bug in is_numeric Arno Welzel <usenet@arnowelzel.de> - 2013-06-05 15:25 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-06-05 10:34 -0400
Re: bug in is_numeric Arno Welzel <usenet@arnowelzel.de> - 2013-06-05 17:02 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-06-05 12:30 -0400
OT: What you say is not always what you mean (was: Re: bug in is_numeric) Arno Welzel <usenet@arnowelzel.de> - 2013-06-05 20:20 +0200
Re: OT: What you say is not always what you mean Jerry Stuckle <jstucklex@attglobal.net> - 2013-06-05 14:40 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-18 21:51 +0200
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-18 17:13 -0500
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-19 00:49 +0200
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 05:24 -0500
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-19 12:40 +0200
Re: bug in is_numeric The Natural Philosopher <tnp@invalid.invalid> - 2013-05-19 12:43 +0100
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-19 11:29 -0500
Re: bug in is_numeric Norman Peelman <npeelman@cfl.rr.com> - 2013-05-18 14:53 -0400
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-16 18:41 -0400
Re: bug in is_numeric Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-05-13 08:35 -0700
Re: bug in is_numeric Denis McMahon <denismfmcmahon@gmail.com> - 2013-05-13 20:26 +0000
Re: bug in is_numeric Denis McMahon <denismfmcmahon@gmail.com> - 2013-05-13 20:15 +0000
Re: bug in is_numeric Robert Heller <heller@deepsoft.com> - 2013-05-12 13:03 -0500
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-12 18:03 +0200
Re: bug in is_numeric fred <email@address.com> - 2013-05-12 18:34 +0100
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-12 19:40 +0200
Re: bug in is_numeric Luuk <luuk@invalid.lan> - 2013-05-12 21:51 +0200
Re: bug in is_numeric "Sanders Kaufman" <bucky@kaufman.net> - 2013-05-12 11:47 -0500
Re: bug in is_numeric Luuk <luuk@invalid.lan> - 2013-05-12 18:56 +0200
Re: bug in is_numeric Thomas Mlynarczyk <thomas@mlynarczyk-webdesign.de> - 2013-05-12 19:05 +0200
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-12 19:38 +0200
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-12 19:46 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-12 14:11 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-12 20:39 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-12 16:51 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 01:27 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-12 20:35 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 11:07 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-13 09:02 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 16:57 +0200
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 17:10 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-13 13:52 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-13 20:28 +0200
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-16 18:28 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-17 00:33 +0200
Re: bug in is_numeric SwissCheese <swisscheese@cfl.rr.com> - 2013-05-16 22:34 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-18 10:28 +0200
Re: bug in is_numeric Norman Peelman <npeelman@cfl.rr.com> - 2013-05-18 08:00 -0400
Re: bug in is_numeric Luuk <luuk@invalid.lan> - 2013-05-18 14:18 +0200
Re: bug in is_numeric Tim Streater <timstreater@greenbee.net> - 2013-05-18 13:20 +0100
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 08:47 -0400
Re: bug in is_numeric The Natural Philosopher <tnp@invalid.invalid> - 2013-05-18 14:05 +0100
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-18 10:16 -0400
Re: bug in is_numeric Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-18 16:14 +0200
Re: bug in is_numeric Sandman <mr@sandman.net> - 2013-05-14 10:34 +0200
Re: bug in is_numeric fred <email@address.com> - 2013-05-14 14:47 +0100
Re: bug in is_numeric Denis McMahon <denismfmcmahon@gmail.com> - 2013-05-14 14:54 +0000
Re: bug in is_numeric Sandman <mr@sandman.net> - 2013-05-15 08:05 +0200
Re: bug in is_numeric Jerry Stuckle <jstucklex@attglobal.net> - 2013-05-15 06:27 -0400
Re: bug in is_numeric Erwin Moller <erwinmollerusenet@xs4all.nl> - 2013-05-15 13:11 +0200
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