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kasperhartwich/TorProxy.php

Created October 12, 2020 12:20
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Check to see if ip address comes from a Tor proxy
Raw
TorProxy.php
<?php
class TorProxy
{
/**
* Is IP address a Tor proxy ip address.
* See https://lists.torproject.org/pipermail/tor-project/2020-March/002759.html
*
* @param $ip
* @return bool
*/
public static function isTorIpAddress(string $ip): bool
{
$host = implode('.', array_reverse(explode('.', $ip))) . '.dnsel.torproject.org';
return !empty(dns_get_record($host));
}
}
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