php，获取客户端ip地址

我在服务器的同一目录中有两个php文件(http://www.xxxx.com/php/)，

1） write_json.php

$address['http_client']=$_SERVER['http_client_IP']；$address['http_x_forwardd_for']=$_SERVER['http_x_forwarded_for']；$address['http_x_forwarded']=$_SERVER['http_x_forwarded']；$address['http_forwardd_for']=$_SERVER['http_forwarded_for']；$address['http_forwarded']=$_SERVER['http_forwarded']；$address['remote_addr']=$_SERVER['remote_addr']；header（'Content-Type:application/json'）；echo json_encode（$address）；

2） get_ip.php

$json_ul=$_SERVER['SERVER_NAME']'/php/write_json.php’；$json_string="；$ch=curl_init（$json_url）；$options=数组（CURLOPT_RETURNTTRANSFER=>true，CURLOPT_HTTPHEADER=>数组（"内容类型：application/json"），CURLOPT_POSTFIELDS=>$json_string）；curl_setopt_array（$ch，$options）；$json_string=curl_exec（$ch）；echo$json_string；

get_ip.phpnbsp 电话  write_json.php

如果我们假设客户端IP为：76.2.35.46，服务器IP为：80.59.3.23
当我打电话时http://www.xxxx.com/php/get_ip.php在客户端浏览器上

它向我显示了服务器IP，而不是客户端IP，如下所示：

{http_client:null，http_x_forwardd_for:null，http_x_forwarded:null，http_forwardd_for:null，http_forwarded:null，remote_addr:"80.59.3.23"}

如何获取客户端IP而不是服务器IP？

// Function to get the client IP address
function get_client_ip() {
    $ipaddress = '';
    if (getenv('HTTP_CLIENT_IP'))
        $ipaddress = getenv('HTTP_CLIENT_IP');
   else if(getenv('HTTP_X_FORWARDED_FOR'))
        $ipaddress = getenv('HTTP_X_FORWARDED_FOR');
   else if(getenv('HTTP_X_FORWARDED'))
        $ipaddress = getenv('HTTP_X_FORWARDED');
   else if(getenv('HTTP_FORWARDED_FOR'))
       $ipaddress = getenv('HTTP_FORWARDED_FOR');
   else if(getenv('HTTP_FORWARDED'))
       $ipaddress = getenv('HTTP_FORWARDED');
   else if(getenv('REMOTE_ADDR'))
       $ipaddress = getenv('REMOTE_ADDR');
   else
       $ipaddress = 'UNKNOWN';
   return $ipaddress;
}