Deny usernames containing certain words

[HabbixDK]

Hey guys I was just wondering if anyone had made something so usernames containing a word like "fuck" would be denied to register?

[MentaL]

[BronzeSpider547]

Add this to your register in php.

if(strpos($_POST["username"], 'fuck') !== false) 
{
    echo '<script>alert("You may not use that username!");</script>';
} 

[HabbixDK]

I'm using RevCMS tho :P

[Matata]

I'm using RevCMS tho :P

Doesn't change anything.

[Jonteh]

Better option:

$entered_name = strtolower($_POST["username"]);
$bannedNameParts = array('fuck', 'cunt', 'shit', 'anal', 'ragezoneisgood');
if(in_array($entered_name, $bannedNameParts)) { die('Username part is banned! Shit bro!'); }

[HabbixDK]

I tried this however when I add more than 2 swearwords my site won't load. Anyone got a suggestion?

final public function validName($username) {
if(strlen($username) <= 25 && ctype_alnum($username))
{
if (strpos($username, "fuck") === FALSE) {
if (strpos($username, "cunt") === FALSE) {


return true;
}
}
else
{
return false;
}
}

[Haidyn]

I tried this however when I add more than 2 swearwords my site won't load. Anyone got a suggestion?

You're missing a bracket and checking each word like that is poor, if you turn on PHP error displaying it'll show you the error and not just go white.
Jonteh's suggestion of an array is easily expandable, try:

function checkName($username) {

    if(strlen($username) <= 25 && ctype_alnum($username)) { 

        $bannedNames = array('fuck', 'cunt');
        if (in_array($username, $bannedNames)) {    

        return true;

        } else {

        return false;

        }
    }
}

[Alozi]

I'm using RevCMS tho :P

RevCMS has nothing to do with the php language.

UberCMS are php too.

All big cms'es are based on php.