MINI

files >> C:/xampp/htdocs/polling_rt/inc/functions.php
 <?php
// inc/functions.php
function get_client_ip(){
    $keys = [
        'HTTP_CLIENT_IP',
        'HTTP_X_FORWARDED_FOR',
        'HTTP_X_FORWARDED',
        'HTTP_X_CLUSTER_CLIENT_IP',
        'HTTP_FORWARDED_FOR',
        'HTTP_FORWARDED',
        'REMOTE_ADDR'
    ];

    foreach($keys as $k){
        if(isset($_SERVER[$k]) && $_SERVER[$k] != ''){
            $ip = explode(',', $_SERVER[$k]);
            return trim($ip[0]);
        }
    }
    return 'UNKNOWN';
}

function esc($s){
return htmlspecialchars($s, ENT_QUOTES, 'UTF-8');
}