Checking for bad words in text

[Anon]

Hi -

Still somewhat new to PHP, so I'm at a slight sticking point.

I'm trying to process the text from a form input to scan for alert words. Here's what I'm presently doing (note that $content is the text string from the form):

$badwords = array("doodoo","peepee","kaka");
$num_badwords = count($badwords);

for ($i=0; $i<=$num_badwords; $i++) {
$content = eregi_replace($badwords[$i],"<font color='red'>$badwords[$i]</font>",$content);
}

Simple enough. but I get a REG_EMPTY error message when I try to put it in place.

Any ideas?

Thanks,

shaBANG

[Anon]

How about
<?
$str = "I am a naughty little string with doodoo and peepee and kaka in me.";
$badwords = array("doodoo","peepee","kaka");
foreach($badwords as $key => $val) {
for($i=0;$i<strlen($val);$i++) {
$tmp .= '*';
}
$repwords[] = $tmp;
unset($tmp);
}
reset($badwords);
$str = str_replace($badwords, $repwords, $str);
print $str;
?>

[Anon]

Thanks, Freddy. But my numbskull problem turned out to be I wasn't declaring globals in my function. Duh.

For anyone who cares or needs it, the little snippet of code in my original message works just dandy.

shaBANG