note 83320 added to function.ip2long

In using a combination of jbothe's code below and some of the "$mask = 0xFFFFFFFF << (32 - $bits)" type code, I ran into an error with some later calculations on a 64 bit machine. Keep in mind that when you're analyzing numbers meant to be treated as 32 bits wide (such as IP addresses), you may want to truncate them. Without relying on other libraries, it was simple enough to follow any calculations that may end with different results on a 64 bit machine with " & 0xFFFFFFFF" Though in many cases, it seems like it might be simpler to just use "~0 << ..." for initial shifting to create the network mask instead of "0xFFFFFFFF << ...". I don't know that it guarantees further operations to work as expected though. ---- Server IP: 209.41.74.194 Probable Submitter: 66.146.193.242 ---- Manual Page -- http://www.php.net/manual/en/function.ip2long.php Edit -- https://master.php.net/note/edit/83320 Del: integrated -- https://master.php.net/note/delete/83320/integrated Del: useless -- https://master.php.net/note/delete/83320/useless Del: bad code -- https://master.php.net/note/delete/83320/bad+code Del: spam -- https://master.php.net/note/delete/83320/spam Del: non-english -- https://master.php.net/note/delete/83320/non-english Del: in docs -- https://master.php.net/note/delete/83320/in+docs Del: other reasons-- https://master.php.net/note/delete/83320 Reject -- https://master.php.net/note/reject/83320 Search -- https://master.php.net/manage/user-notes.php