if ip is php

1// Function to get the client IP address
2function get_client_ip() {
3    $ipaddress = '';
4    if (getenv('HTTP_CLIENT_IP'))
5        $ipaddress = getenv('HTTP_CLIENT_IP');
6    else if(getenv('HTTP_X_FORWARDED_FOR'))
7        $ipaddress = getenv('HTTP_X_FORWARDED_FOR');
8    else if(getenv('HTTP_X_FORWARDED'))
9        $ipaddress = getenv('HTTP_X_FORWARDED');
10    else if(getenv('HTTP_FORWARDED_FOR'))
11        $ipaddress = getenv('HTTP_FORWARDED_FOR');
12    else if(getenv('HTTP_FORWARDED'))
13       $ipaddress = getenv('HTTP_FORWARDED');
14    else if(getenv('REMOTE_ADDR'))
15        $ipaddress = getenv('REMOTE_ADDR');
16    else
17        $ipaddress = 'UNKNOWN';
18    return $ipaddress;
19}

1if($_SERVER["REMOTE_ADDR"]=='111.111.111.111'){
2//run only my ip
3}