Are there any limitations or drawbacks to using PHP code to block Tor access on a website?

One limitation of using PHP code to block Tor access on a website is that it may not be foolproof as Tor users can easily switch exit nodes. Additionally, it may impact legitimate users who are using Tor for privacy reasons. To implement this, you can use PHP to check the visitor's IP address against a list of known Tor exit nodes and deny access if a match is found. 

$tor_exit_nodes = file_get_contents('https://check.torproject.org/torbulkexitlist');
$tor_exit_nodes = explode("\n", $tor_exit_nodes);

$visitor_ip = $_SERVER['REMOTE_ADDR'];

if(in_array($visitor_ip, $tor_exit_nodes)) {
    // Block Tor users
    header('HTTP/1.0 403 Forbidden');
    exit;
}

Keywords

PHP Tor access control limitations drawbacks

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