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

Well, in this case you can just check whether there is a "bad word" in the user input string, and if it returns true, echo "You are a potty mouth."

You would want to use strpos()

e.g.

if( strpos($_POST['user_input'],'dog')!==FALSE ) {
    echo('You are a potty mouth');
}

If you have an array of "bad words" you'll want to loop through them to check any occur within user input.