function getClientIp($type = 0) { $type = $type ? 1 : 0; static $ip = NULL; if ($ip !== NULL) return $ip[$type]; if($_SERVER[‘HTTP_X_REAL_IP‘]){//nginx 代理模式下,获取客户端真实IP $ip=$_SERVER[‘HTTP_X_REAL_IP‘]; }elseif (isset($_SERVER[‘HTTP_CLIENT_IP‘])) {//客户端的ip $ip = $_SERVER[‘HTTP_CLIENT_IP‘]; }elseif (isset($_SERVER[‘HTTP_X_FORWARDED_FOR‘])) {//浏览当前页面的用户计算机的网关 $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[‘REMOTE_ADDR‘])) { $ip = $_SERVER[‘REMOTE_ADDR‘];//浏览当前页面的用户计算机的ip地址 }else{ $ip=$_SERVER[‘REMOTE_ADDR‘]; } // IP地址合法验证 $long = sprintf("%u",ip2long($ip)); $ip = $long ? array($ip, $long) : array(‘0.0.0.0‘, 0); return $ip[$type];}