form validation

Hello all - probably a simple one, but not for me!

I'm trying to check if a variable from a form has any spaces in it. I don't want to strip out the whitespace (as its a username and password), but display a warning.

Heres what I have so far:

if( !eregi("^[a-z0-9]+)*",
$_POST ['nickname'])){
readfile("blankfields.html");
exit;
} else {
}

Any suggestions?

Thanks

simplest way would be this

$username = str_replace(" ", "",$_POST['nickname'])

simplest way would be this

$username = str_replace(" ", "",$_POST['nickname'])


Thanks MRMAN.

I actually can't strip out the gaps, as its going to be the users name and password. If i strip it out, then their log in will be different. (for example: the user inputs 'player 1', and the application saves it as 'player1')

I have put a notice on the form asking users not to add spaces but they are not reading it. So I need to check it and issue a warning if there is a space.

actually I just got a fix for it.

If anyone is interested:

if ( substr_count ($string, " ") > 0 ) {

// We have spaces

} else {

// We don't

}


Thanks

You'll usually find that sitepoint gets your answers to your questions a little quicker than around here.
Although I'm happy to answer your questions anywhere :p