Online PHP editor | rfc for Fh0Fs

@ 2016-10-25T08:50:42Z

<?php

$a = array(
    '192.168.11.12/24',
    '62.10.11.12/32',
    '128.10.11.12/8',
    '96.50.51.52/16',

    '192.168.1.188/27'
);

$b = array(
    '192.168.128.0',   // kein Treffer
    '192.168.11.255',  // Treffer
    '62.10.11.255',    // kein Treffer
    '62.10.11.12',     // Treffer
    '128.255.255.255', // Treffer
    '129.255.255.255', // kein Treffer
    '96.50.255.255',   // Treffer
    '97.50.51.52',     // kein Treffer

    '192.168.1.189',   // Treffer
    '192.168.1.89'     // kein Treffer
);

function f(array $a)
{
    $new = array();

    foreach ($a as $item) {
        list($ipv4, $cidr) = explode('/', $item);

        $iplong = ip2long($ipv4);

        $iplong >>= 32 - $cidr;

        if (!isset($new[$cidr])) {
            $new[$cidr] = array();
        }

        $new[$cidr][$iplong] = true;
    }

    return $new;
}

function g(array $a2, array $b)
{
    foreach ($b as $item) {

        $iplong = ip2long($item);

        for ($i = 1; $i <= 32; $i++) {
            if (isset($a2[$i][$iplong >> 32 - $i])) {
                echo $item . '- Treffer' . '(' . $i .  ')' . "\n";
                continue 2;
            }
        }

        echo $item . ' - kein Treffer' . "\n";
    }
}

$a2 = f($a);

g($a2, $b);

Output for git.master, git.master_jit, rfc.property-hooks: 192.168.128.0 - kein Treffer 192.168.11.255- Treffer(24) 62.10.11.255 - kein Treffer 62.10.11.12- Treffer(32) 128.255.255.255- Treffer(8) 129.255.255.255 - kein Treffer 96.50.255.255- Treffer(16) 97.50.51.52 - kein Treffer 192.168.1.189- Treffer(27) 192.168.1.89 - kein Treffer

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