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    Junior Member
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    I'm working on a user sign-up system, and like all registration pages I require the user to add a preferred screen name, password, and email address. Of course I need to test each of the user's entries w/ regular expressions. The screen name can only have (A-Z,a-z,_) no spaces, and same goes for the password. How would I create an expression to check for that, and what would it look like? I also need to see what the code for the email address regular expression would look like. Any help would be greatly appreciated. Thanx...

    ------------------
    Let me know if this helps, Cryption
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    RyanP
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    Devshed Newbie (0 - 499 posts)
    Hi Cryption,

    <BLOCKQUOTE><font size="1" face="Verdana,Arial,Helvetica">code:</font><HR><pre>
    // validate username
    // W matches non-alphanumeric characters
    if(preg_match("/W/", $username))
    {
    // print error
    }
    else
    {
    // do something
    }

    // validate email address
    if(preg_match("/^(w+.?)+@(w+.)+w+$/", $emailAddress))
    {
    // do something
    }
    else
    {
    // print error
    }
    [/code]

    i'm pretty sure this will work, i haven't tested it, let me know if you have any problems and i will fire up the test bed and make it work

    [This message has been edited by RyanP (edited August 07, 2000).]

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