Function to strip all but letters, numbers, and _?

[Sugapablo]

Does anyone have a handy-dandy function they can quickly post that strips
everything from a string except for letters, numbers, & underscores?

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[ Sugapablo ]
[ http://www.sugapablo.com <--music ]
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[porneL]

Re: Function to strip all but letters, numbers, and _?

On Sat, 15 Jan 2005 14:59:18 -0500, Sugapablo <russ@REMOVEsug apablo.com>
wrote:
[color=blue]
> Does anyone have a handy-dandy function they can quickly post that strips
> everything from a string except for letters, numbers, & underscores?[/color]

$stripped = preg_replace('/[^a-z0-9_]/i','',$string);


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[Alvaro G. Vicario]

Re: Function to strip all but letters, numbers, and _?

*** Sugapablo escribió/wrote (Sat, 15 Jan 2005 14:59:18 -0500):[color=blue]
> Does anyone have a handy-dandy function they can quickly post that strips
> everything from a string except for letters, numbers, & underscores?[/color]

function strip_all_but_l etters_numbers_ and_underscores ($text){
return preg_replace('/[^\w\d_]+/', '', $text);
}

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[Chung Leong]

Re: Function to strip all but letters, numbers, and _?

"Alvaro G. Vicario" <kAlvaroNOSPAMT HANKS@terra.es> wrote in message
news:1uzyis8eku xw9.v2x1zufftpv 4.dlg@40tude.ne t...[color=blue]
> *** Sugapablo escribió/wrote (Sat, 15 Jan 2005 14:59:18 -0500):[color=green]
> > Does anyone have a handy-dandy function they can quickly post that[/color][/color]
strips[color=blue][color=green]
> > everything from a string except for letters, numbers, & underscores?[/color]
>
> function strip_all_but_l etters_numbers_ and_underscores ($text){
> return preg_replace('/[^\w\d_]+/', '', $text);
> }
>
> --
> -+ Álvaro G. Vicario - Burgos, Spain
> +- http://www.demogracia.com (la web de humor barnizada para la[/color]
intemperie)[color=blue]
> ++ 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]

Eh, \w includes digits and the underscore. Also, capital letters are used to
denote "not a meta character." Hence the following:

preg_replace('/\W+/', '', $text);

[Alvaro G. Vicario]

Re: Function to strip all but letters, numbers, and _?

*** Chung Leong escribió/wrote (Sat, 15 Jan 2005 23:07:33 -0500):[color=blue]
> Eh, \w includes digits and the underscore. Also, capital letters are used to
> denote "not a meta character." Hence the following:
>
> preg_replace('/\W+/', '', $text);[/color]

Absolutely right. My code is what happens when you trust your memory :)

--
-+ 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
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