note 78935 added to function.ip2long

As a note : if you are using (PHP 4, PHP 5) and are looking to get the integer value of an IP address, i have found that the following works flawlessly for converting to and from IPv4 and it's integer equivalent. I must give credit elsewhere for this portion of the code (ip2long($ip) & 0x7FFFFFFF) + 0x80000000). I looked but was unable to find the comment where it was included. $ip = "127.0.0.0"; // as an example $integer_ip = (substr($ip, 0, 3) > 127) ? ((ip2long($ip) & 0x7FFFFFFF) + 0x80000000) : ip2long($ip); echo $integer_ip; // integer value of IP address echo long2ip($integer_ip); // convert to an IPv4 formatted address ----------------------- Results are as follows: ----------------------- 2130706432 127.0.0.0 ----------------------- 255.255.255.255 (converts to) 4294967295 (and back to) 255.255.255.255 209.65.0.0 (converts to) 3510697984 (and back to) 209.65.0.0 12.0.0.0 (converts to) 201326592 (and back to) 12.0.0.0 1.0.0.0 (converts to) 16777216 (and back to) 1.0.0.0 ---- Server IP: 64.71.164.2 Probable Submitter: 68.54.37.105 ---- Manual Page -- http://www.php.net/manual/en/function.ip2long.php Edit -- https://master.php.net/note/edit/78935 Del: integrated -- https://master.php.net/note/delete/78935/integrated Del: useless -- https://master.php.net/note/delete/78935/useless Del: bad code -- https://master.php.net/note/delete/78935/bad+code Del: spam -- https://master.php.net/note/delete/78935/spam Del: non-english -- https://master.php.net/note/delete/78935/non-english Del: in docs -- https://master.php.net/note/delete/78935/in+docs Del: other reasons-- https://master.php.net/note/delete/78935 Reject -- https://master.php.net/note/reject/78935 Search -- https://master.php.net/manage/user-notes.php