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Package ip-set
Short Description Efficiently match IP addresses against a set of CIDR specifications.
License GPL-2.0-or-later
Homepage https://www.mediawiki.org/wiki/IPSet
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Informations about the package ip-set
IPSet
IPSet is a PHP library for matching IP addresses against a set of CIDR specifications.
Here is how you use it:
use Wikimedia\IPSet;
// At startup, calculate the optimized data structure for the set:
$ipset = new IPSet( [
'208.80.154.0/26',
'2620:0:861:1::/64',
'10.64.0.0/22',
] );
// Runtime check against cached set (returns bool):
if ( $ipset->match( $ip ) ) {
// ...
}
In rough benchmarking, this takes about 80% more time than in_array()
checks
on a short (a couple hundred at most) array of addresses. It's fast either way
at those levels, though, and IPSet would scale better than in_array if the
array were much larger.
For mixed-family CIDR sets, however, this code gives well over 100x speedup vs
iterating Wikimedia\IPUtils::isInRange()
over an array of CIDR specs.
The basic implementation is two separate binary trees (IPv4 and IPv6) as nested php arrays with keys named 0 and 1. The values false and true are terminal match-fail and match-success, otherwise the value is a deeper node in the tree.
A simple depth-compression scheme is also implemented: whole-byte tree compression at whole-byte boundaries only, where no branching occurs during that whole byte of depth. A compressed node has keys 'comp' (the byte to compare) and 'next' (the next node to recurse into if 'comp' matched successfully).
For example, given these inputs:
25.0.0.0/9 25.192.0.0/10
The v4 tree would look like:
root4 => [
'comp' => 25,
'next' => [
0 => true,
1 => [
0 => false,
1 => true,
],
],
];
(multi-byte compression nodes were attempted as well, but were a net loss in my test scenarios due to additional match complexity)
License
Copyright 2014, 2015 Brandon Black [email protected]
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. http://www.gnu.org/copyleft/gpl.html
All versions of ip-set with dependencies
ext-json Version *
php Version >=7.4.3