note 72709 added to function.usort

To svenxy AT nospam gmx net A faster and clearer way of sorting IP addresses: <?php $zones = array('192.168.11', '192.169.12', '192.168.13', '192.167.14', '192.168.15', '122.168.16', '192.168.17' ); function sort_subnets_ip2long($a, $b) { return sprintf("%u", ip2long($a)) - sprintf("%u", ip2long($b)); } usort($zones, "sort_subnets_ip2long"); ?> Simple testing shows this version is just under twice as fast. MySQLers: No need to sort this stuff in PHP! Use MySQL's INET_ATON() family of functions to save cycles. var_dump($zones); ---- Server IP: 85.116.0.130 Probable Submitter: 213.177.232.41 ---- Manual Page -- http://www.php.net/manual/en/function.usort.php Edit -- https://master.php.net/note/edit/72709 Del: integrated -- https://master.php.net/note/delete/72709/integrated Del: useless -- https://master.php.net/note/delete/72709/useless Del: bad code -- https://master.php.net/note/delete/72709/bad+code Del: spam -- https://master.php.net/note/delete/72709/spam Del: non-english -- https://master.php.net/note/delete/72709/non-english Del: in docs -- https://master.php.net/note/delete/72709/in+docs Del: other reasons-- https://master.php.net/note/delete/72709 Reject -- https://master.php.net/note/reject/72709 Search -- https://master.php.net/manage/user-notes.php