PHP Replacing swear words with phrases

Question

So I get how to replace certain words with other ones. What I\'m trying to figure out is how to take a word and replace it with a phrase and eliminate all other input.

Answer 1

I've been looking at the same issue recently, here's a script I was working on to filter certain words. Still a work in progress but it has the ability to output the user message or a custom message. Hope it helps or points you in the right direction.

define("MIN_SAFE_WORD_LIMIT", 3);
$safe = true;
$whiteList = array();
$blackList = array();

$text = 'Test words fRom a piece of text.';

$blCount = count($blackList);

for($i=0; $i<$blCount; $i++) {
    if((strlen($blackList[$i]) >= MIN_SAFE_WORD_LIMIT) && strstr(strtolower($text), strtolower($blackList[$i])) && !strstr(strtolower($text), strtolower($whiteList[$i]))) {
        $safe = false;
    }
}

if(!$safe) {
    // Unsafe, flag for action
    echo 'Unsafe';
} else {
    echo $text;
}