vb.org Archive - Regex on username for chat login

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- - Regex on username for chat login (https://vborg.vbsupport.ru/showthread.php?t=35031)

TranceCan

02-13-2002 05:02 AM

Hello,

We are using the chat hack to integrate IRC chat in our forums. The problem is with usernames that are valid in VB, but not in IRC. What I would like to do is add a piece of code to check usernames and remove invalid characters as they are sent into chat.

ie. [A.O.E.]sNiPeR (that's an example of a REAL username in our forums).

The regex I need (I could never grasp how to write regular expressions) would remove any brackets and convert periods and space to underscores. So, in this example, it would become:

A_O_E_sNiPeR

Or in the case of a space, like: The Dude, would become The_Dude.

Can someone PLEASE give me a code snippet that will do that?

THANKS!!!!!

Mark Hensler

02-13-2002 05:22 AM

You could use str_replace(). I don't think you'll need the power of regular expressions, so str_replace will give you more speed.

example:

PHP Code:


		
			


$replace = array(

    // array(OUT, IN),

    array('[', ''),

    array(']', ''),

    array('.', '_'),

    array(' ', '_')

    );



$string = str_replace($replace[0], $replace[1], $string);

TranceCan

02-13-2002 05:41 AM

Quote:

Originally posted by Mark Hensler
You could use str_replace(). I don't think you'll need the power of regular expressions, so str_replace will give you more speed.

example:

PHP Code:

$replace = array( // array(OUT, IN), array('[', ''), array(']', ''), array('.', '_'), array(' ', '_') ); $string = str_replace($replace[0], $replace[1], $string);

Very close! Didn't work for me though, so I dug in the PHP manual and ended up with this:

$search = array('[', ']', '.', ' ');
$replace = array('', '', '_', '_');

$string = str_replace($search, $replace, $string);

Works like a charm now!! Thanks for your help, got me on the right trail!!

Mark Hensler

02-13-2002 06:32 PM

sorry...
This is what I wanted to post, but aparently my mind wasn't with me at the time. ;)

PHP Code:


		
			
$replace = array(

    // "OUT" => "IN"

    '[' => '',

    ']' => '',

    '.' => '_',

    ' ' => '_'

    );



$text = str_replace(array_keys($replace), array_values($replace), $text);

I this because you can see the pairs easier.

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