note 109919 added to function.filter-var

Further to joelhy's tip about checking private IPs, it's very likely that you actually want to detect all reserved ranges, not just private IPs, and there's another constant for them that should be bitwise-OR'd with it. <?php function is_private_ip($ip) { return !filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE); } ?> ---- Server IP: 195.221.21.36 Probable Submitter: 77.204.55.124 ---- Manual Page -- http://www.php.net/manual/en/function.filter-var.php Edit -- https://master.php.net/note/edit/109919 Del: integrated -- https://master.php.net/note/delete/109919/integrated Del: useless -- https://master.php.net/note/delete/109919/useless Del: bad code -- https://master.php.net/note/delete/109919/bad+code Del: spam -- https://master.php.net/note/delete/109919/spam Del: non-english -- https://master.php.net/note/delete/109919/non-english Del: in docs -- https://master.php.net/note/delete/109919/in+docs Del: other reasons-- https://master.php.net/note/delete/109919 Reject -- https://master.php.net/note/reject/109919 Search -- https://master.php.net/manage/user-notes.php