php 获取本机ip

本文主要是介绍php 获取本机ip，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

    public function get_client_ip($type = 0, $adv = false)
    {
        $type = $type ? 1 : 0;
        static $ip = NULL;
        if ($ip !== NULL) return $ip[$type];
        if ($adv) {
            if (isset($_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 = $_SERVER['REMOTE_ADDR'];
            }
        } elseif (isset($_SERVER['REMOTE_ADDR'])) {
            $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];
    }

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