Simple Banned Words Filter

The following script will take your variable $comments and filter out any bad words. eregi_replace is case-insensitive, so it will take out the word, no matter the way it is input.

[php]
$bad_words = explode('|', 'badword1|badword2|badword3|etc|etc');
foreach ($bad_words as $naughty)
{
$comments = eregi_replace($naughty, "#!@%*#", $comments);
}
[/php]

This will turn the input "I really think that you are a badword1, and a badword2"

into

"I really think that you are a #!@%*#, and a #!@%*#"

It will at least help keep a message board or guestbook clean.

himerus

Junior Poster in Training

84 posts since Aug 2003

Reputation Points: 11

Solved Threads: 0

8 Years Ago

0

Yeah, it's a good idea, but I think that just replacing the entire word with one character is neater so you can see the length of the character (and guess what it is if you really need to know what it was :p).

Gary King

PHP/vBulletin Guru

Team Colleague

417 posts since Nov 2003

Reputation Points: 53

Solved Threads: 5

8 Years Ago

0

Or people could also use my hack for vBulletin, which replaces censored text with an image instead - it helps visually :D

http://www.vbulletin.org/forum/showthread.php?s=&threadid=53665

Gary King

PHP/vBulletin Guru

Team Colleague

417 posts since Nov 2003

Reputation Points: 53

Solved Threads: 5

8 Years Ago

0

Thanks, Gary! :) You've got a lot of really good hacks over at vB.org

cscgal

The Queen of DaniWeb

Administrator

19,421 posts since Feb 2002

Reputation Points: 1,474

Solved Threads: 229

8 Years Ago

0

Thanks :)

Gary King

PHP/vBulletin Guru

Team Colleague

417 posts since Nov 2003

Reputation Points: 53

Solved Threads: 5

8 Years Ago

0

Watch out when filtering curse words. If the text submitted handles text formating like tags (or b wrapped in brackets like this and other forums do), I could easily do something shit and it would spell out you know what with the "s" in bold. I think this is a bug in vBulletin. I know I tried it on a few forums and it worked.

samaru

a.k.a inscissor

Team Colleague

1,256 posts since Feb 2002

Reputation Points: 262

Solved Threads: 18

8 Years Ago

0

very nice

SMterminator

Light Poster

44 posts since Jan 2004

Reputation Points: 30

Solved Threads: 2

6 Years Ago

0

very nice

couldnt you just do striptags() and/or mysqlescapestring()
this should filter off tags, or you could custom code a bb code like parser so that it replaces , etc. with nothing.

extermin8tor

Newbie Poster

14 posts since Jan 2006

Reputation Points: 10

Solved Threads: 0

Simple Banned Words Filter

This article has been dead for over three months