[cesarcesar]

Im trying to make a naughty word filter. It removes bad words fine, but instances where there is a bad word found in the text like "assist" and "asses" get caught in the filter as well. Strangely though if the sentence is: My asses to assist me." the clean version will read: My asses to ***ist me." It seems to clear the first use of the word in another word, but then blocks the rest. Any ideas? My script is below. Thanks.

Code:

function cleanWords($value) {

	/*   strip naughty words   */
	$bad_word_file = 'standards/badwords.txt';
	$strtofile = fopen($bad_word_file, "r");
	$badwords = explode("\n", fread($strtofile, filesize($bad_word_file)));
	fclose($strtofile);
	
	for ($i = 0; $i < count($badwords); $i++) {
		$wordlist .= str_replace(chr(13),'',$badwords[$i]).'|';
	}
	$wordlist = substr($wordlist,0,-1);

	$value = preg_replace("/\b($wordlist)\b/ie", 'preg_replace("/./","*","\\1")', $value);	
	return $value;

}

[wirehopper]

PHP Code:

<?php

/* Read in from the file here, not in the function - you only need to read the file once */

$wordlist='one|two|three|four';



/* Sample data */

$words=array('stone twoot three fourth','under oven tree','cookie oneder ream');



foreach ($words as $k => $v)

        echo 'Words: '.$v.' Cleaned: '.clean($wordlist,$v).PHP_EOL;



function clean($wordlist,$value)

{

        return preg_replace("/($wordlist)/i", '***',trim($value));

}

?>

Output:

Words: stone twoot three fourth Cleaned: st*** ***ot *** ***th
Words: under oven tree Cleaned: under oven tree
Words: cookie oneder ream Cleaned: cookie ***der ream

[Jcbones]

With a lot of bad words, this function can get consuming, but it does filter whole words only, and will not split words up.

Using wirehoppers example, with a litte changing around.

PHP Code:

<?php
/* Read in from the file here, not in the function - you only need to read the file once */
$wordlist[] = 'one';
$wordlist[] = 'two';
$wordlist[] = 'three';
$wordlist[] = 'four';

/* Sample data */
$words = 'stone twoot three fourth under oven tree cookie oneder ream one sixone threetwo fournine four';

foreach ($wordlist as $v)
      $words = clean($v,$words);

function clean($wordlist,$value)
{
        return preg_replace("/\b$wordlist\b/i", '***',trim($value));
}  

echo 'Words: '.$words.PHP_EOL;
?>

Code:

Words: stone twoot *** fourth under oven tree cookie oneder ream *** sixone threetwo fournine ***

[cesarcesar]

my list is 1000 words. ill try your scripts out. thanks.

[cesarcesar]

i ended up finding that the word "a.s.s." was in my list. I think the dots were messing up the expression. For thos interested, this is my new code. Thanks for any suggestions to get it where it is.

Code:

$_SESSION[wordlist] = join("|", array_map('trim', file('standards/badwords.txt')));

function cleanWords($value) {

	global $_SESSION;

	$value = preg_replace("/\b($_SESSION[wordlist])\b/ie", 'str_repeat("*", strlen("\\1")) ', $value);	
	return $value;

}