确定字符串是否包含数组中的一组单词之一

Question

I need a simple word filter that will kill a script if it detects a filtered word in a string.

say my words are as below

$showstopper = array(badword1, badword2, badword3, badword4);

$yourmouth = "im gonna badword3 you up";

if(something($yourmouth, $showstopper)){ 
//stop the show
}

Answer 1

You could implode the array of badwords into a regular expression, and see if it matches against the haystack. Or you could simply cycle through the array, and check each word individually.

From the comments:

$re = "/(" . implode("|", $showstopper) . ")/"; //  '/(badword1|badword2)/'
if (preg_match($re, $yourmouth) > 0) { die("foulmouth"); }