thinkphp How to get the client ip,thinkphp get ip_php tutorial

thinkphp How to get the client ip,thinkphp get IP

In the thinkphp framework, the system built-in Get_client_ip method is used to obtain the IP address of the client, using the example:
$ip = Get_client_ip ();
In addition to the thinkphp built-in get_client_ip function, you can also use the following function to obtain the client IP address.
$type means return type 0 returns an IP address, 1 returns a IPV4 address number
Share the code below

function get_client_ip ($type = 0) {  $type    = $type? 1:0;  Static $IP =  NULL;  if ($ip!== NULL) return $ip [$type];  if (Isset ($_server[' http_x_forwarded_for ')) {    $arr  =  explode (', ', $_server[' http_x_forwarded_for ']);    $pos  =  array_search (' unknown ', $arr);    if (false!== $pos) unset ($arr [$pos]);    $ip   =  Trim ($arr [0]);  } ElseIf (Isset ($_server[' http_client_ip ')) {    $ip   =  $_server[' http_client_ip '];  } ElseIf (Isset ($_server[' remote_addr ')) {    $ip   =  $_server[' remote_addr '];  }  IP Address legal authentication  $long = Ip2long ($IP);  $ip  = $long? Array ($ip, $long): Array (' 0.0.0.0 ', 0);  return $ip [$type];

I hope this article will be helpful to you in-depth study of PHP programming.

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