php获取客户端ip

最新推荐文章于 2025-03-17 17:58:34 发布

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最新推荐文章于 2025-03-17 17:58:34 发布

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分类专栏： thinkphp5 文章标签： php

本文链接：https://blog.youkuaiyun.com/qq_43019779/article/details/124151927

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/**
 * 获取客户端IP
 */
public function get_ip() {
        if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
            $ip = getenv('HTTP_CLIENT_IP');
        } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
            $ip = getenv('HTTP_X_FORWARDED_FOR');
        } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
            $ip = getenv('REMOTE_ADDR');
        } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
            $ip = $_SERVER['REMOTE_ADDR'];
        }
        $ip = strstr($ip,'<!DOCTYPE html>',true);
        $ip = trim($ip);
        if(!$ip || $this->is_private_ip($ip)) {
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, IP_SERVICE_URL);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            $output = curl_exec($ch);
            return $output;
        }
        else{
            return $ip;
        }
    }
    public function is_private_ip($ip) {
        return !filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE);
    }