Self Whitelisting Help

[jomasaco]

I guess if the link back are commented will be accepted too
<!--LINK to Site--> //are accepted

Try always validate the users input data, never forget to safe the query's

$siteurl = $_POST['siteurl']; //need be in http 
$siteurl = parse_url(trim($siteurl)); //remove spaces split the url
$siteurl = $siteurl['host']; //get host
$siteurl = str_replace("www.","",$siteurl); //remove the www
$ipAddress = gethostbyname($siteurl);
if($ipAddress === $siteurl) //validate if real the site exists

INSERT INTO wcddl_whitelist (`url`) VALUES ('$siteurl')

INSERT INTO wcddl_whitelist (`url`) VALUES ('".mysql_real_escape_string($siteurl)."') //avoiding the sql injections are always an good idea