Fix IP from cloudflare

functions.php

@@ -1,66 +1,4 @@
 <?php
-declare(strict_types=1);
-function ip_in_range(string $ip, string $range) : bool {
-    if (strpos($range, '/') == false)
-        $range .= '/32';
-
-    // $range is in IP/CIDR format eg 127.0.0.1/24
-    list($range, $netmask) = explode('/', $range, 2);
-    $range_decimal = ip2long($range);
-    $ip_decimal = ip2long($ip);
-    $wildcard_decimal = pow(2, (32 - $netmask)) - 1;
-    $netmask_decimal = ~ $wildcard_decimal;
-    return (($ip_decimal & $netmask_decimal) == ($range_decimal & $netmask_decimal));
-}
-
-function _cloudflare_CheckIP(string $ip) : bool {
-    $cf_ips = array(
-        '199.27.128.0/21',
-        '173.245.48.0/20',
-        '103.21.244.0/22',
-        '103.22.200.0/22',
-        '103.31.4.0/22',
-        '141.101.64.0/18',
-        '108.162.192.0/18',
-        '190.93.240.0/20',
-        '188.114.96.0/20',
-        '197.234.240.0/22',
-        '198.41.128.0/17',
-        '162.158.0.0/15',
-        '104.16.0.0/12',
-    );
-    $is_cf_ip = false;
-    foreach ($cf_ips as $cf_ip) {
-        if (ip_in_range($ip, $cf_ip)) {
-            $is_cf_ip = true;
-            break;
-        }
-    } return $is_cf_ip;
-}
-
-function _cloudflare_Requests_Check() : bool {
-    $flag = true;
-
-    if(!isset($_SERVER['HTTP_CF_CONNECTING_IP']))   $flag = false;
-    if(!isset($_SERVER['HTTP_CF_IPCOUNTRY']))       $flag = false;
-    if(!isset($_SERVER['HTTP_CF_RAY']))             $flag = false;
-    if(!isset($_SERVER['HTTP_CF_VISITOR']))         $flag = false;
-    return $flag;
-}
-
-function isCloudflare() : bool {
-    $ipCheck        = _cloudflare_CheckIP($_SERVER['REMOTE_ADDR']);
-    $requestCheck   = _cloudflare_Requests_Check();
-    return ($ipCheck && $requestCheck);
-}
-
-// Use when handling ip's
-function getRequestIP() : string {
-    $check = isCloudflare();
-
-    if($check) {
-        return $_SERVER['HTTP_CF_CONNECTING_IP'];
-    } else {
-        return $_SERVER['REMOTE_ADDR'];
-    }
+function getRequestIP(){
+    return (isset($_SERVER['HTTP_CF_CONNECTING_IP']))? $_SERVER['HTTP_CF_CONNECTING_IP'] : $_SERVER['REMOTE_ADDR'];
 }