[ask] badword filter script

[ogah]

i want to make bad words filter scrip with php

example case:
i want to filter the word "out"
if someone submitting the words containing "out" with or without leading or trailing space, it will be rejected.
but word like "outfit" or "without" will be accepted.

can anybody help me?

thanks

 

[jaran]

The easy way is using similar word API. You can find alot at google. I found an example from Wordnik API which they have related words features on their API.

http://developer.wordnik.com/docs.html#!/word/getRelatedWords_get_4

 

[ogah]

The easy way is using similar word API. You can find alot at google. I found an example from Wordnik API which they have related words features on their API.

http://developer.wordnik.com/docs.html#!/word/getRelatedWords_get_4

http://api.wordnik.com:80/v4/word.json/f*ck?useCanonical=false&includeSuggestions=false&api_key=a2a73e7b926c924fad7001ca3111acd55af2ffabf50eb4ae5

response body

{
  "id": 0,
  "scrabble": false,
  "lookupCount": 0
}

how to know the "f*ck" is bad word?

 

[jaran]

For specific words like this, I usually using regex to replace all of them. You may try it now.

<?php
$old_string = 'You are bicth fool. Fuck yourself !!!';
$bad_words_list = '/crap|ugly|brat|fool|fuck|fucking|f\*cking|f\*ck|bitch|b\*tch|shit|sh\*t|fool|dumb|couch potato|arse|arsehole|asshole|\*ssh\*l\*|\*\*\*\*|c\*ck|\*\*\*\*sucker|c\*cks\*ck\*r|\*\*\*\*|c\*nt|dickhead|d\*c\*h\*a\*|\*\*\*\*|f\*c\*|\*\*\*\*wit|f\*ckw\*t|fuk|f\*k|fuking|f\*k\*ng|mother\*\*\*\*er|m\*th\*rf\*ck\*r|\*\*\*\*\*\*|n\*gg\*r|pussy|p\*ssy|\*\*\*\*|sh\*t|wanker|w\*nk\*r|wankers|w\*nk\*rs|whore|wh\*r\*|slag| sl\*g|\*\*\*\*\*|b\*tch|f u c k|f\*c\*|b.i.t.c.h|b\*tch|d-i-c-k|d\*\*\*/si';
$change_word = 'INSERT WORDS YOUR DESIRE';
$fix_words = preg_replace($bad_words_list, $change_word, $old_string);
?>

 

[ogah]

thanks bro.
i want to reject submition if containing badword, not replace the badword with other word.
like example above. "out", " out" and "out " are rejected. but "out*", "*out" and "*out*" are accepted

 

[ogah]

aha i found it http://php.net/manual/en/function.preg-match.php
it must use boundary

if(preg_math('/\bbadword\b/sui', $post)) { rejected }

 

[ogah]

$badword = array('word1', 'word2', 'word3','etc');
$ban = "/\b(".implode('|', $badword).")\b/siu";
if(preg_match($ban, $post)) {
	echo 'Sorry bad word not allowed';
}
else { echo 'ok'; }

 

[simon]

if that you runs a user genarated content site you'd check that with your php script. maybe a fast way for your request