Censor Help

[Anon]

I want to make a function that will censor what a person post on a message board I made but for some reason its not working if anyone will please read over this code and tell me why it might not be working:

Code:

function censor ($post) {

global $dbhost, $dbuser, $dbpass, $db;

$sql_server = @mysql_connect($dbhost,$dbuser,$dbpass) or die("<b>Fatal MySQL Error: </b> We were unable to contact the MySQL server. <a href=\"mailto:$systemadmin\">Contact system admin.</a>");
mysql_select_db($db,$sql_server) or die("<b>Fatal MySQL Error: </b> We were unable to query the MySQL server. <a href=\"mailto:$systemadmin\">Contact system admin.</a>");

$Censor_query = mysql_query("SELECT * FROM forum_censor");

$query = mysql_fetch_array($Censor_query);

$censor = "$query[censor]";

$replace = "CENSORED";

$lookup = @explode(",",$censor);

$zie = @sizeof($lookup)-1;

while($zie > -1) {
$a = "$dont[$zie]";
for($i=1; $i <= @strlen($a); $i++) {
$nono .= "$replace";
}
$post = @eregi_replace($a, substr($a,0,0)."$nono", $post);

    $nono = "";
    $zie--;

return $post;
}
}

[khaine]

What is the code actually doing? In what way doesn't work? I cant run the code myself because I dont have the correct tables.

Mark.