can we get pc user name from IP using php code example

Example 1: php get user ip

$ip = $_SERVER['REMOTE_ADDR'];

Example 2: get user ip in php

function getIp() {
    $ip = $_SERVER['REMOTE_ADDR'];
 
    if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
        $ip = $_SERVER['HTTP_CLIENT_IP'];
    } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
        $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
    }
 
    return $ip;
}