网络地址来源：

 获取 公网IP 地址                  






{IP:255.255.255.255}

  

python

 import requests
from bs4 import BeautifulSoup
def getIP():
    headers = {
        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.16 Safari/537.36",
    }

    url = '#39;
    response = requests.get(url=url,
                            headers=headers).content. decode ()
    soup = BeautifulSoup(response, 'html.parser')
    ipaddress = soup.find_all('b')[0].find("span").text
    ip_list = [" 127.0.0.1 ","1.204.29.177"]
    if ipaddress in ip_list:
        print("合法登录")
    else:
        print("非法登录")


getIP()  

PHP

      $url = "#34;;
        $content = file_get_contents($url);
        $data = explode("=",$content);
        $str =  substr ($data[1],0, strlen ($data[1])-1);
        $ip_str = explode(",",$str)[0];
        $ip_str = explode(":",$ip_str);
        $visitor_ip = explode('"',$ip_str[1])[1]; # 访问者ip
        
        # 获取ip库
        $ file name = "ip_list.txt";
        $arr = array();
        if (0 < filesize($filename)){
            $handle = fopen($filename, "r");//读取二进制文件时，需要将第二个参数设置成'rb'
        
             //通过filesize获得文件大小，将整个文件一下子读到一个字符串中
            $contents = fread($handle, filesize ($filename));
             fclose ($handle);
            $arr = explode("\r\n",trim($contents,"\r\n"));
        }
        
        
        if (in_array($ visitor _ip,$arr) || 0 == count($arr)){
              echo  "合法";
        }else{
             echo "非法";
        }