[SOLVED] Removing swearwords from contact form

[jimmyt1988]

Hi all,

 

Just finished off my contact form..

 

I want to ban swear words.. Is there an easy php mailer thingy that does this?

[Adam]

Depends what banning involves.. Starring out the wrong 'uns, or just flatly refusing to send the email?

[jimmyt1988]

flatly refusing.

[mikesta707]

Ok, I made a quick function, its not perfect, but it may help you out.

function buildBadVariants($arr){
$lets = array('i', 'l', 'e', 'a', 's', 't', 'o');
$replace = array('1', '1', '3', '4', '5', '7', '0');
foreach($arr as $word){
	foreach($lets as $key =>$let){
		if (substr_count($word, $let) > 0){
			$new = str_replace($let, $replace[$key], $word);
			$arr[] = $new;
		}
	}
	$arr[] = str_replace($lets, $replace, $word);
}
return array_unique($arr);
}

function isBad($str, $bad){
$tokens = explode(" ", $str);
foreach ($tokens as $word){
	if (in_array($word, $bad)){
		return "$str: you dirty boy<br />";
	}
}
return "$str: comment is clean<br />";
}


$bad = array("fuck", "shit", "bastard", "fucker", "fucking", "bitch", "dick");


$comment = "fuck you!";
$comment2 = "oh sh1t";
$comment3 = "sh1771ng d1ck n1pples";
$comment4 = "I am just a wholesome farm boy";

echo isBad($comment, buildBadVariants($bad));
echo isBad($comment2, buildBadVariants($bad));
echo isBad($comment3, buildBadVariants($bad));
echo isBad($comment4, buildBadVariants($bad));

output:

fuck you!: you dirty boy
oh sh1t: you dirty boy
sh1771ng d1ck n1pples: you dirty boy
I am just a wholesome farm boy: comment is clean

 

just to explain a few things, the getbadVariants function will take your array of normal swear words, and add elements replacing certain letters in those swear words with corresponding "1337 speak" numbers. It tries to get most variations (it doesn't get them all) but it tries to prevent hiding bad words by testing for the numbered ones too. just as an example, if i do this line (iusing the same variable $bad as before)

print_r(buildBadVariants($bad));

 

the output is

Array 
( [0] => fuck 
[1] => shit 
[2] => bastard 
[3] => fucker 
[4] => fucking 
[5] => bitch 
[6] => dick 
[8] => sh1t 
[9] => 5hit 
[10] => shi7 
[11] => 5h17 
[12] => b4st4rd 
[13] => ba5tard 
[14] => bas7ard 
[15] => b4574rd 
[16] => fuck3r 
[18] => fuck1ng 
[20] => b1tch 
[21] => bi7ch 
[22] => b17ch 
[23] => d1ck ) 

 

obviously you can change this to fit your needs. hope this helps

[jimmyt1988]

AWESOME.. it works haha,

 

thankyou very much!

 

ahhh bliss.. My contact form is complete.. yehaaaa thankss buddeh