get client ip address

ip.php

<?php
function getPublic()
{
    $curl = curl_init();
    curl_setopt_array($curl, array(
        CURLOPT_URL => "http://ipinfo.io/ip",
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_ENCODING => "",
        CURLOPT_MAXREDIRS => 10,
        CURLOPT_TIMEOUT => 30,
        CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
        CURLOPT_CUSTOMREQUEST => "GET",
        CURLOPT_HTTPHEADER => array(
            "Cache-Control: no-cache",
            "Postman-Token: 83e4eed8-5cd2-4ff5-8716-5f4849d12911",
        ),
    ));
    $response = curl_exec($curl);
    $err = curl_error($curl);
    curl_close($curl);
    if ($err) {
        echo "cURL Error #:" . $err;
    } else {
        echo $response;
    }
}
function staticGetIP()
{
    $ip = '127.0.0.1';
    if (getenv('HTTP_CF_CONNECTING_IP')) {
        $ip = getenv('HTTP_CF_CONNECTING_IP');
    } else if (getenv('HTTP_CLIENT_IP')) {
        $ip = getenv('HTTP_CLIENT_IP');
    } else if (getenv('HTTP_X_FORWARDED_FOR')) {
        $ip = getenv('HTTP_X_FORWARDED_FOR');
    } else if (getenv('HTTP_X_FORWARDED')) {
        $ip = getenv('HTTP_X_FORWARDED');
    } else if (getenv('HTTP_FORWARDED_FOR')) {
        $ip = getenv('HTTP_FORWARDED_FOR');
    } else if (getenv('HTTP_FORWARDED')) {
        $ip = getenv('HTTP_FORWARDED');
    } else if (getenv('REMOTE_ADDR')) {
        $ip = getenv('REMOTE_ADDR');
    } else {
        $ip = getPublic();
    }
    return explode(',', $ip)[0];
}
echo staticGetIP();