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Description

Usage

Reader::findAddressInTree( $ipAddress );

Parameters

$ipAddress

( mixed ) required –

Returns

void

Source

File name: woocommerce/includes/libraries/geolite2/Reader.php
Lines:

    private function findAddressInTree($ipAddress)
    {
        // XXX - could simplify. Done as a byte array to ease porting
        $rawAddress = array_merge(unpack('C*', inet_pton($ipAddress)));

        $bitCount = count($rawAddress) * 8;

        // The first node of the tree is always node 0, at the beginning of the
        // value
        $node = $this->startNode($bitCount);

        for ($i = 0; $i < $bitCount; $i++) {
            if ($node >= $this->metadata->nodeCount) {
                break;
            }
            $tempBit = 0xFF & $rawAddress[$i >> 3];
            $bit = 1 & ($tempBit >> 7 - ($i % 8));

            $node = $this->readNode($node, $bit);
        }
        if ($node === $this->metadata->nodeCount) {
            // Record is empty
            return 0;
        } elseif ($node > $this->metadata->nodeCount) {
            // Record is a data pointer
            return $node;
        }
        throw new InvalidDatabaseException('Something bad happened');
    }
 

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