Efficient way to test string for certain words

Question

I have a bunch of banned words and want to check if string A contains any of these words.

For example:

$banned_words = \"dog cat horse bird mouse mon         


        

Answer 1

$badwords = array('dog','cat','horse','bird','mouse','monkey');
$content= "The quick brown fox jumped over the lazy dog";
$content = str_replace($badwords, 'has_badwords' $content);
if (strpos($content, 'has_badwords') !== false) {
    echo 'true';
}