how to validate $_GET var is a positive integer?

[NotGiven]

I need to check the $_GET['idnum'] to make certain it is a positive integer.

is_integer($_GE T['idnum']) is not working. I think it thinks it's a sting.
So I tried casting it to an int using, is_integer((int )$_GET['idnum']).
Then whatever I threw in the _GET variable passed as an integer, even
strings.

Any ideas or links or functions are much appreciated!

[Alvaro G. Vicario]

Re: how to validate $_GET var is a positive integer?

*** NotGiven escribió/wrote (Mon, 6 Sep 2004 18:04:11 -0400):[color=blue]
> I need to check the $_GET['idnum'] to make certain it is a positive integer.
>
> is_integer($_GE T['idnum']) is not working. I think it thinks it's a sting.
> So I tried casting it to an int using, is_integer((int )$_GET['idnum']).
> Then whatever I threw in the _GET variable passed as an integer, even
> strings.[/color]

Manual says:

"To test if a variable is a number or a numeric string (such as form input,
which is always a string), you must use is_numeric()."

In any case, for most apps it's enough with (int)$_GET['idnum']; of course,
using that value in your calculations, not only to validate. The worst
problem you can face is that actual value is "3a" or "3.25" and you get a
3.


--
-+ Álvaro G. Vicario - Burgos, Spain
+- http://www.demogracia.com (la web de humor barnizada para la intemperie)
++ Las dudas informáticas recibidas por correo irán directas a la papelera
-+ I'm not a free help desk, please don't e-mail me your questions
--

[NotGiven]

Re: how to validate $_GET var is a positive integer?

right, and thanks. '3a' is exactly what I am trying to test for - I am
posting another main topic to cover this


"Alvaro G. Vicario" <kAlvaroNOSPAMT HANKS@terra.es> wrote in message
news:x455s1g3ln sj.gmxzqncs8qmw .dlg@40tude.net ...[color=blue]
> *** NotGiven escribió/wrote (Mon, 6 Sep 2004 18:04:11 -0400):[color=green]
>> I need to check the $_GET['idnum'] to make certain it is a positive
>> integer.
>>
>> is_integer($_GE T['idnum']) is not working. I think it thinks it's a
>> sting.
>> So I tried casting it to an int using, is_integer((int )$_GET['idnum']).
>> Then whatever I threw in the _GET variable passed as an integer, even
>> strings.[/color]
>
> Manual says:
>
> "To test if a variable is a number or a numeric string (such as form
> input,
> which is always a string), you must use is_numeric()."
>
> In any case, for most apps it's enough with (int)$_GET['idnum']; of
> course,
> using that value in your calculations, not only to validate. The worst
> problem you can face is that actual value is "3a" or "3.25" and you get a
> 3.
>
>
> --
> -+ Álvaro G. Vicario - Burgos, Spain
> +- http://www.demogracia.com (la web de humor barnizada para la
> intemperie)
> ++ Las dudas informáticas recibidas por correo irán directas a la papelera
> -+ I'm not a free help desk, please don't e-mail me your questions
> --[/color]

[steve]

Re: Re: how to validate $_GET var is a positive integer?

"NotGiven" wrote:[color=blue]
> right, and thanks. ’3a’ is exactly what I am trying to
> test for - I am
> posting another main topic to cover this
>
>
> "Alvaro G. Vicario" <kAlvaroNOSPAMT HANKS@terra.es> wrote in
> message
> news:x455s1g3ln sj.gmxzqncs8qmw .dlg@40tude.net ...[color=green]
> > *** NotGiven escribió/wrote (Mon, 6 Sep 2004 18:04:11 -0400):[color=darkred]
> >> I need to check the $_GET[’idnum’] to make[/color][/color]
> certain it is a positive[color=green][color=darkred]
> >> integer.
> >>
> >> is_integer($_GE T[’idnum’]) is not working. I[/color][/color]
> think it thinks it’s a[color=green][color=darkred]
> >> sting.
> >> So I tried casting it to an int using,[/color][/color]
> is_integer((int )$_GET[’idnum’]).[color=green][color=darkred]
> >> Then whatever I threw in the _GET variable passed as an[/color][/color]
> integer, even[color=green][color=darkred]
> >> strings.[/color]
> >
> > Manual says:
> >
> > "To test if a variable is a number or a numeric string (such as[/color]
> form[color=green]
> > input,
> > which is always a string), you must use is_numeric()."
> >
> > In any case, for most apps it’s enough with[/color]
> (int)$_GET[’idnum’]; of[color=green]
> > course,
> > using that value in your calculations, not only to validate. The[/color]
> worst[color=green]
> > problem you can face is that actual value is "3a" or "3.25"[/color][/color]
and[color=blue]
> you get a[color=green]
> > 3.
> >
> >
> > --
> > -+ Álvaro G. Vicario - Burgos, Spain
> > +- http://www.demogracia.com (la web de humor barnizada para la
> > intemperie)
> > ++ Las dudas informáticas recibidas por correo irán directas a la[/color]
> papelera[color=green]
> > -+ I’m not a free help desk, please don’t e-mail me[/color]
> your questions[color=green]
> > --</font>[/color][/color]

you can test integer this way

preg_match("/^\d+$/", $input)

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[steve]

Re: how to validate $_GET var is a positive integer?

"NotGiven" wrote:[color=blue]
> I need to check the $_GET[’idnum’] to make certain it is a
> positive integer.
>
> is_integer($_GE T[’idnum’]) is not working. I think it
> thinks it’s a sting.
> So I tried casting it to an int using,
> is_integer((int )$_GET[’idnum’]).
> Then whatever I threw in the _GET variable passed as an integer,[/color]
even[color=blue]
> strings.
>
> Any ideas or links or functions are much appreciated![/color]

As I responded to your other post..

preg_match("/^\d+$/", $inputvalue)

of course, "0" would also eval to True here.

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Articles individually checked for conformance to usenet standards
Topic URL: http://www.dbForumz.com/PHP-validate...ict146910.html
Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.dbForumz.com/eform.php?p=491966

[Alvaro G. Vicario]

Re: how to validate $_GET var is a positive integer?

*** NotGiven escribió/wrote (Mon, 6 Sep 2004 18:25:19 -0400):[color=blue]
> right, and thanks. '3a' is exactly what I am trying to test for - I am
> posting another main topic to cover this[/color]

That's the sort of situations where a regular expression (used in
preg_match) is the easiest way:

/^[0-9]{1,2}[a-z]{1}$/ ---> 1 or 2 digits plus exactly 1 letter
/^[0-9]{1}[a-z]{0,2}$/ ---> exactly 1 digit plus 0, 1 or 2 letters

etc.

--
-+ Álvaro G. Vicario - Burgos, Spain
+- http://www.demogracia.com (la web de humor barnizada para la intemperie)
++ Las dudas informáticas recibidas por correo irán directas a la papelera
-+ I'm not a free help desk, please don't e-mail me your questions
--

[NotGiven]

Re: Re: how to validate $_GET var is a positive integer?

thanks

"steve" <UseLinkToEmail @dbForumz.com> wrote in message
news:413d31ae$1 _3@alt.athenane ws.com...[color=blue]
> "NotGiven" wrote:[color=green]
> > right, and thanks. '3a' is exactly what I am trying to
> > test for - I am
> > posting another main topic to cover this
> >
> >
> > "Alvaro G. Vicario" <kAlvaroNOSPAMT HANKS@terra.es> wrote in
> > message
> > news:x455s1g3ln sj.gmxzqncs8qmw .dlg@40tude.net ...[color=darkred]
> > > *** NotGiven escribió/wrote (Mon, 6 Sep 2004 18:04:11 -0400):
> > >> I need to check the $_GET['idnum'] to make[/color]
> > certain it is a positive[color=darkred]
> > >> integer.
> > >>
> > >> is_integer($_GE T['idnum']) is not working. I[/color]
> > think it thinks it's a[color=darkred]
> > >> sting.
> > >> So I tried casting it to an int using,[/color]
> > is_integer((int )$_GET['idnum']).[color=darkred]
> > >> Then whatever I threw in the _GET variable passed as an[/color]
> > integer, even[color=darkred]
> > >> strings.
> > >
> > > Manual says:
> > >
> > > "To test if a variable is a number or a numeric string (such as[/color]
> > form[color=darkred]
> > > input,
> > > which is always a string), you must use is_numeric()."
> > >
> > > In any case, for most apps it's enough with[/color]
> > (int)$_GET['idnum']; of[color=darkred]
> > > course,
> > > using that value in your calculations, not only to validate. The[/color]
> > worst[color=darkred]
> > > problem you can face is that actual value is "3a" or "3.25"[/color][/color]
> and[color=green]
> > you get a[color=darkred]
> > > 3.
> > >
> > >
> > > --
> > > -+ Álvaro G. Vicario - Burgos, Spain
> > > +- http://www.demogracia.com (la web de humor barnizada para la
> > > intemperie)
> > > ++ Las dudas informáticas recibidas por correo irán directas a la[/color]
> > papelera[color=darkred]
> > > -+ I'm not a free help desk, please don't e-mail me[/color]
> > your questions[color=darkred]
> > > --</font>[/color][/color]
>
> you can test integer this way
>
> preg_match("/^\d+$/", $input)
>
> --
> http://www.dbForumz.com/ This article was posted by author's request
> Articles individually checked for conformance to usenet standards
> Topic URL:
> http://www.dbForumz.com/PHP-validate...ict146910.html
> Visit Topic URL to contact author (reg. req'd). Report abuse:
> http://www.dbForumz.com/eform.php?p=491964[/color]

[NotGiven]

Re: how to validate $_GET var is a positive integer?

thanks

"Alvaro G. Vicario" <kAlvaroNOSPAMT HANKS@terra.es> wrote in message
news:ckpjfdx3yk mf.16xtcsu8uxr0 m$.dlg@40tude.n et...[color=blue]
> *** NotGiven escribió/wrote (Mon, 6 Sep 2004 18:25:19 -0400):[color=green]
>> right, and thanks. '3a' is exactly what I am trying to test for - I am
>> posting another main topic to cover this[/color]
>
> That's the sort of situations where a regular expression (used in
> preg_match) is the easiest way:
>
> /^[0-9]{1,2}[a-z]{1}$/ ---> 1 or 2 digits plus exactly 1 letter
> /^[0-9]{1}[a-z]{0,2}$/ ---> exactly 1 digit plus 0, 1 or 2 letters
>
> etc.
>
> --
> -+ Álvaro G. Vicario - Burgos, Spain
> +- http://www.demogracia.com (la web de humor barnizada para la
> intemperie)
> ++ Las dudas informáticas recibidas por correo irán directas a la papelera
> -+ I'm not a free help desk, please don't e-mail me your questions
> --[/color]