PHP 獲取真實IP地址
阿新 • • 發佈:2018-12-31
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,獲取客戶端真實IP $ip=$_SERVER['HTTP_X_REAL_IP']; }elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {//客戶端的ip $ip = $_SERVER['HTTP_CLIENT_IP']; }elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {//瀏覽當前頁面的使用者計算機的閘道器 $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'];//瀏覽當前頁面的使用者計算機的ip地址 }else{ $ip=$_SERVER['REMOTE_ADDR']; } // IP地址合法驗證 $long = sprintf("%u",ip2long($ip)); $ip = $long ? array($ip, $long) : array('0.0.0.0', 0); return $ip[$type]; }