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Asked: 2026-05-10T13:38:04+00:00

Not very technical, but… I have to implement a bad words filter in a

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Not very technical, but… I have to implement a bad words filter in a new site we are developing. So I need a ‘good’ bad words list to feed my db with… any hint / direction? Looking around with google I found this one, and it’s a start, but nothing more.

Yes, I know that this kind of filters are easily escaped… but the client will is the client will !!! 🙂

The site will have to filter out both english and italian words, but for italian I can ask my colleagues to help me with a community-built list of ‘parolacce’ 🙂 – an email will do.

Thanks for any help.

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  1. I didn’t see any language specified but you can use this for PHP it will generate a RegEx for each instered work so that even intentional mis-spellings (i.e. @ss, i3itch ) will also be caught.

    <?php  /**  * @author unkwntech@unkwndesign.com  **/  if($_GET['act'] == 'do')  {     $pattern['a'] = '/[a]/'; $replace['a'] = '[a A @]';     $pattern['b'] = '/[b]/'; $replace['b'] = '[b B I3 l3 i3]';     $pattern['c'] = '/[c]/'; $replace['c'] = '(?:[c C (]|[k K])';     $pattern['d'] = '/[d]/'; $replace['d'] = '[d D]';     $pattern['e'] = '/[e]/'; $replace['e'] = '[e E 3]';     $pattern['f'] = '/[f]/'; $replace['f'] = '(?:[f F]|[ph pH Ph PH])';     $pattern['g'] = '/[g]/'; $replace['g'] = '[g G 6]';     $pattern['h'] = '/[h]/'; $replace['h'] = '[h H]';     $pattern['i'] = '/[i]/'; $replace['i'] = '[i I l ! 1]';     $pattern['j'] = '/[j]/'; $replace['j'] = '[j J]';     $pattern['k'] = '/[k]/'; $replace['k'] = '(?:[c C (]|[k K])';     $pattern['l'] = '/[l]/'; $replace['l'] = '[l L 1 ! i]';     $pattern['m'] = '/[m]/'; $replace['m'] = '[m M]';     $pattern['n'] = '/[n]/'; $replace['n'] = '[n N]';     $pattern['o'] = '/[o]/'; $replace['o'] = '[o O 0]';     $pattern['p'] = '/[p]/'; $replace['p'] = '[p P]';     $pattern['q'] = '/[q]/'; $replace['q'] = '[q Q 9]';     $pattern['r'] = '/[r]/'; $replace['r'] = '[r R]';     $pattern['s'] = '/[s]/'; $replace['s'] = '[s S $ 5]';     $pattern['t'] = '/[t]/'; $replace['t'] = '[t T 7]';     $pattern['u'] = '/[u]/'; $replace['u'] = '[u U v V]';     $pattern['v'] = '/[v]/'; $replace['v'] = '[v V u U]';     $pattern['w'] = '/[w]/'; $replace['w'] = '[w W vv VV]';     $pattern['x'] = '/[x]/'; $replace['x'] = '[x X]';     $pattern['y'] = '/[y]/'; $replace['y'] = '[y Y]';     $pattern['z'] = '/[z]/'; $replace['z'] = '[z Z 2]';     $word = str_split(strtolower($_POST['word']));     $i=0;     while($i < count($word))      {         if(!is_numeric($word[$i]))          {             if($word[$i] != ' ' || count($word[$i]) < '1')              {                 $word[$i] = preg_replace($pattern[$word[$i]], $replace[$word[$i]], $word[$i]);              }          }         $i++;      }     //$word = '/' . implode('', $word) . '/';     echo implode('', $word);  }  if($_GET['act'] == 'list')  {     $link = mysql_connect('localhost', 'username', 'password', '1');     mysql_select_db('peoples');     $sql = 'SELECT word FROM filters';     $result = mysql_query($sql, $link);     $i=0;     while($i < mysql_num_rows($result))      {         echo mysql_result($result, $i, 'word') . '<br />';         $i++;      }      echo '<hr>';  } ?> <html>     <head>         <title>RegEx Generator</title>     </head>     <body>         <form action='badword.php?act=do' method='post'>             Word: <input type='text' name='word' /><br />             <input type='submit' value='Generate' />         </form>         <a href='badword.php?act=list'>List Words</a>     </body> </html>
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