matching array element to string

[Anon]

I have a simple problem, I think.

I have an array of curse words and a form with 1 input feild. What I need to do is when data is entered, check whether any of these words exist in the user submitted string.

[deckrdx]

here is how I would do it....

$badwords = array('@%@@!', '!@@#$%^');
$userwords = explode(' ', str_to_lower($textfield));
$result = array_intersect($userwords, $badwords);
if(sizeof($result) > 0) {
print 'naughty, naughty';
} else {
print 'nice and clean';
}

[Anon]

Thanks Chad,
for some reason i got an error undifined function array_intersect. My host may have an earlier version of PHP that does'nt support this function. Is there another way to do this?

[deckrdx]

array_intersect is a php4 function, but if you look at the manual page for array_intersect, someone posted an equivilent function for php3

http://www.php.net/manual/en/function.array-intersect.php