How can one accurately retrieve and compare the IP address of a visitor to a list of Tor exit nodes in PHP?

To accurately retrieve and compare the IP address of a visitor to a list of Tor exit nodes in PHP, you can use the `$_SERVER['REMOTE_ADDR']` variable to get the visitor's IP address and then compare it to a list of known Tor exit nodes. You can find a list of Tor exit nodes online and store them in an array. Then, loop through the array and check if the visitor's IP address matches any of the Tor exit nodes. 

$visitor_ip = $_SERVER['REMOTE_ADDR'];
$tor_exit_nodes = array('node1', 'node2', 'node3'); // replace with actual Tor exit nodes

foreach ($tor_exit_nodes as $node) {
    if ($visitor_ip == $node) {
        echo 'Visitor is using Tor';
        // add your code here for handling Tor users
        break;
    }
}

Keywords

PHP IP address Tor exit nodes comparison retrieval

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