note 95816 added to function.ip2long
| From: | (O) | Date: | Sat, 23 Jan 2010 11:37:03 +0000 |
| Subject: | note 95816 added to function.ip2long | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-165229@lists.php.net to get a copy of this message | ||
Another CIDR function, but with sanity check:
<?php
function mask2prefix($mask)
{
if (($long = ip2long($mask)) === false)
return false;
for ($prefix = 0; $long & 0x80000000; ++$prefix, $long <<= 1) {}
if ($long != 0)
return false;
return $prefix;
}
?>
----
Server IP: 69.147.83.197
Probable Submitter: 217.172.17.141
----
Manual Page -- http://www.php.net/manual/en/function.ip2long.php
Edit -- https://master.php.net/note/edit/95816
Del: integrated -- https://master.php.net/note/delete/95816/integrated
Del: useless -- https://master.php.net/note/delete/95816/useless
Del: bad code -- https://master.php.net/note/delete/95816/bad+code
Del: spam -- https://master.php.net/note/delete/95816/spam
Del: non-english -- https://master.php.net/note/delete/95816/non-english
Del: in docs -- https://master.php.net/note/delete/95816/in+docs
Del: other reasons-- https://master.php.net/note/delete/95816
Reject -- https://master.php.net/note/reject/95816
Search -- https://master.php.net/manage/user-notes.php