note 113080 added to function.ip2long

As pointed out by others, this function's return value is not consistent on 32 and 64-bit platforms. Your best bet for consistent behavior across 32/64-bit platforms (and Windows) is the lowest common denominator: force the return value of ip2long() into a signed 32-bit integer, e.g.: var_dump(unpack('l', pack('l', ip2long('255.255.255.0')))); This looks idiotic, but it gives you a consistent signed integer value on all platforms. (the arguments to both pack() and unpack() are the lower-case letter "L", not the number "1", in case it looks that way on your screen...) ---- Server IP: 64.71.164.2 Probable Submitter: 68.70.61.119 ---- Manual Page -- http://php.net/manual/en/function.ip2long.php Edit -- https://master.php.net/note/edit/113080 Del: integrated -- https://master.php.net/note/delete/113080/integrated Del: useless -- https://master.php.net/note/delete/113080/useless Del: bad code -- https://master.php.net/note/delete/113080/bad+code Del: spam -- https://master.php.net/note/delete/113080/spam Del: non-english -- https://master.php.net/note/delete/113080/non-english Del: in docs -- https://master.php.net/note/delete/113080/in+docs Del: other reasons-- https://master.php.net/note/delete/113080 Reject -- https://master.php.net/note/reject/113080 Search -- https://master.php.net/manage/user-notes.php