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Text tutorial for php to obtain visitor (client) IP and geographical location

Aug 14, 2017 am 10:34 AM
php geographical location client

在日常开发过程中我们经常需要去分析客户端用户的行为,那么记录这些行为就必须要获取客户端真实的ip信息,本章教程,就给大家讲解下如何获取客户端:语言、浏览器、操作系统、IP、地理位置、ISP等信息。  

首先我们需要下载本章程教程所使用的php类库http://www.php.cn/xiazai/leiku/827

该类之前使用的是百度的ip库,由于百度的IP库失效,我修改了该类,使用了本地的ip库,如果你也需要使用本地ip库 那么就去下载:UTFWry.dat百度搜索下有很多,你可以最新的。

实例化该类:

   $obj = new class_guest_info;
     echo $obj->GetLang().&#39;<br/>&#39;;        //获取访客语言:简体中文、繁體中文、English。
     echo  $obj->GetBrowser().&#39;<br/>&#39;;     //获取访客浏览器:MSIE、Firefox、Chrome、Safari、Opera、Other。
     echo  $obj->GetOS().&#39;<br/>&#39;;          //获取访客操作系统:Windows、MAC、Linux、Unix、BSD、Other。
     echo   $obj->GetIP().&#39;<br/>&#39;;          //获取访客IP地址。
    $ipinfo=  $obj->GetAdd();         //获取访客地理位置,使用 Baidu 隐藏接口。
  echo $ipinfo[&#39;country&#39;].$ipinfo[&#39;area&#39;];
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我将修改后的类上传到了我们的php中文网的服务器上 地址是 http://www.php.cn/ip/ip.php

Text tutorial for php to obtain visitor (client) IP and geographical location

以下是处理纯真ip库UTFWry.dat的PHP类:

<?php
/**
 *  IP 地理位置查询类 修改自 CoolCode.CN
 *  由于使用UTF8编码 如果使用纯真IP地址库的话 需要对返回结果进行编码转换
 * @category   ORG
 * @package  ORG
 * @subpackage  Net
 * @author    liu21st <liu21st@gmail.com>
 */
class IpLocation {
    /**
     * QQWry.Dat文件指针
     *
     * @var resource
     */
    private $fp;

    /**
     * 第一条IP记录的偏移地址
     *
     * @var int
     */
    private $firstip;

    /**
     * 最后一条IP记录的偏移地址
     *
     * @var int
     */
    private $lastip;

    /**
     * IP记录的总条数(不包含版本信息记录)
     *
     * @var int
     */
    private $totalip;

    /**
     * 构造函数,打开 QQWry.Dat 文件并初始化类中的信息
     *
     * @param string $filename
     * @return IpLocation
     */
    public function __construct($filename = "UTFWry.dat") {
        $this->fp = 0;
        if (($this->fp = fopen(dirname(__FILE__).&#39;/&#39;.$filename, &#39;rb&#39;)) !== false) {
            $this->firstip = $this->getlong();
            $this->lastip = $this->getlong();
            $this->totalip = ($this->lastip - $this->firstip) / 7;
        }
    }

    /**
     * 返回读取的长整型数
     *
     * @access private
     * @return int
     */
    private function getlong() {
        //将读取的little-endian编码的4个字节转化为长整型数
        $result = unpack(&#39;Vlong&#39;, fread($this->fp, 4));
        return $result[&#39;long&#39;];
    }

    /**
     * 返回读取的3个字节的长整型数
     *
     * @access private
     * @return int
     */
    private function getlong3() {
        //将读取的little-endian编码的3个字节转化为长整型数
        $result = unpack(&#39;Vlong&#39;, fread($this->fp, 3).chr(0));
        return $result[&#39;long&#39;];
    }

    /**
     * 返回压缩后可进行比较的IP地址
     *
     * @access private
     * @param string $ip
     * @return string
     */
    private function packip($ip) {
        // 将IP地址转化为长整型数,如果在PHP5中,IP地址错误,则返回False,
        // 这时intval将Flase转化为整数-1,之后压缩成big-endian编码的字符串
        return pack(&#39;N&#39;, intval(ip2long($ip)));
    }

    /**
     * 返回读取的字符串
     *
     * @access private
     * @param string $data
     * @return string
     */
    private function getstring($data = "") {
        $char = fread($this->fp, 1);
        while (ord($char) > 0) {        // 字符串按照C格式保存,以\0结束
            $data .= $char;             // 将读取的字符连接到给定字符串之后
            $char = fread($this->fp, 1);
        }
        return $data;
    }

    /**
     * 返回地区信息
     *
     * @access private
     * @return string
     */
    private function getarea() {
        $byte = fread($this->fp, 1);    // 标志字节
        switch (ord($byte)) {
            case 0:                     // 没有区域信息
                $area = "";
                break;
            case 1:
            case 2:                     // 标志字节为1或2,表示区域信息被重定向
                fseek($this->fp, $this->getlong3());
                $area = $this->getstring();
                break;
            default:                    // 否则,表示区域信息没有被重定向
                $area = $this->getstring($byte);
                break;
        }
        return $area;
    }

    /**
     * 根据所给 IP 地址或域名返回所在地区信息
     *
     * @access public
     * @param string $ip
     * @return array
     */
    public function getlocation($ip=&#39;&#39;) {
        if (!$this->fp) return null;            // 如果数据文件没有被正确打开,则直接返回空
		if(empty($ip)) $ip = get_client_ip();
        $location[&#39;ip&#39;] = gethostbyname($ip);   // 将输入的域名转化为IP地址
        $ip = $this->packip($location[&#39;ip&#39;]);   // 将输入的IP地址转化为可比较的IP地址
                                                // 不合法的IP地址会被转化为255.255.255.255
        // 对分搜索
        $l = 0;                         // 搜索的下边界
        $u = $this->totalip;            // 搜索的上边界
        $findip = $this->lastip;        // 如果没有找到就返回最后一条IP记录(QQWry.Dat的版本信息)
        while ($l <= $u) {              // 当上边界小于下边界时,查找失败
            $i = floor(($l + $u) / 2);  // 计算近似中间记录
            fseek($this->fp, $this->firstip + $i * 7);
            $beginip = strrev(fread($this->fp, 4));     // 获取中间记录的开始IP地址
            // strrev函数在这里的作用是将little-endian的压缩IP地址转化为big-endian的格式
            // 以便用于比较,后面相同。
            if ($ip < $beginip) {       // 用户的IP小于中间记录的开始IP地址时
                $u = $i - 1;            // 将搜索的上边界修改为中间记录减一
            }
            else {
                fseek($this->fp, $this->getlong3());
                $endip = strrev(fread($this->fp, 4));   // 获取中间记录的结束IP地址
                if ($ip > $endip) {     // 用户的IP大于中间记录的结束IP地址时
                    $l = $i + 1;        // 将搜索的下边界修改为中间记录加一
                }
                else {                  // 用户的IP在中间记录的IP范围内时
                    $findip = $this->firstip + $i * 7;
                    break;              // 则表示找到结果,退出循环
                }
            }
        }

        //获取查找到的IP地理位置信息
        fseek($this->fp, $findip);
        $location[&#39;beginip&#39;] = long2ip($this->getlong());   // 用户IP所在范围的开始地址
        $offset = $this->getlong3();
        fseek($this->fp, $offset);
        $location[&#39;endip&#39;] = long2ip($this->getlong());     // 用户IP所在范围的结束地址
        $byte = fread($this->fp, 1);    // 标志字节
        switch (ord($byte)) {
            case 1:                     // 标志字节为1,表示国家和区域信息都被同时重定向
                $countryOffset = $this->getlong3();         // 重定向地址
                fseek($this->fp, $countryOffset);
                $byte = fread($this->fp, 1);    // 标志字节
                switch (ord($byte)) {
                    case 2:             // 标志字节为2,表示国家信息又被重定向
                        fseek($this->fp, $this->getlong3());
                        $location[&#39;country&#39;] = $this->getstring();
                        fseek($this->fp, $countryOffset + 4);
                        $location[&#39;area&#39;] = $this->getarea();
                        break;
                    default:            // 否则,表示国家信息没有被重定向
                        $location[&#39;country&#39;] = $this->getstring($byte);
                        $location[&#39;area&#39;] = $this->getarea();
                        break;
                }
                break;
            case 2:                     // 标志字节为2,表示国家信息被重定向
                fseek($this->fp, $this->getlong3());
                $location[&#39;country&#39;] = $this->getstring();
                fseek($this->fp, $offset + 8);
                $location[&#39;area&#39;] = $this->getarea();
                break;
            default:                    // 否则,表示国家信息没有被重定向
                $location[&#39;country&#39;] = $this->getstring($byte);
                $location[&#39;area&#39;] = $this->getarea();
                break;
        }
        if ($location[&#39;country&#39;] == " php.cn") {  // CZ88.NET表示没有有效信息
            $location[&#39;country&#39;] = "未知";
        }
        if ($location[&#39;area&#39;] == "php.cn") {
            $location[&#39;area&#39;] = "";
        }
        return $location;
    }

    /**
     * 析构函数,用于在页面执行结束后自动关闭打开的文件。
     *
     */
    public function __destruct() {
        if ($this->fp) {
            fclose($this->fp);
        }
        $this->fp = 0;
    }

}
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