Home >Backend Development >PHP Tutorial > php获取本土实际IP

php获取本土实际IP

WBOY
WBOYOriginal
2016-06-13 13:10:00802browse

php获取本地实际IP

? function real_ip()
{
??? static $realip = NULL;

??? if ($realip !== NULL)
??? {
??????? return $realip;
??? }

??? if (isset($_SERVER))
??? {
??????? if (isset($_SERVER['HTTP_X_FORWARDED_FOR']))
??????? {
??????????? $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);

??????????? foreach ($arr AS $ip)
??????????? {
??????????????? $ip = trim($ip);

??????????????? if ($ip != 'unknown')
??????????????? {
??????????????????? $realip = $ip;

??????????????????? break;
??????????????? }
??????????? }
??????? }
??????? elseif (isset($_SERVER['HTTP_CLIENT_IP']))
??????? {
??????????? $realip = $_SERVER['HTTP_CLIENT_IP'];
??????? }
??????? else
??????? {
??????????? if (isset($_SERVER['REMOTE_ADDR']))
??????????? {
??????????????? $realip = $_SERVER['REMOTE_ADDR'];
??????????? }
??????????? else
??????????? {
??????????????? $realip = '0.0.0.0';
??????????? }
??????? }
??? }
??? else
??? {
??????? if (getenv('HTTP_X_FORWARDED_FOR'))
??????? {
??????????? $realip = getenv('HTTP_X_FORWARDED_FOR');
??????? }
??????? elseif (getenv('HTTP_CLIENT_IP'))
??????? {
??????????? $realip = getenv('HTTP_CLIENT_IP');
??????? }
??????? else
??????? {
??????????? $realip = getenv('REMOTE_ADDR');
??????? }
??? }

??? preg_match("/[\d\.]{7,15}/", $realip, $onlineip);
??? $realip = !empty($onlineip[0]) ? $onlineip[0] : '0.0.0.0';

??? return $realip;
}

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn