holmes-for-tc

hm.php

<?php
class _HMT {
    // 版本号
    private $VERSION = "tc-1.0";

    // 访次长度（秒）
    private $VISIT_DURATION = 1800;

    // 访客有效期（秒）
    private $VISITOR_MAX_AGE = 31536000;

    // 站点id
    private $siteId = "";

    // 域名列表
    private $domainList = array();

    // 受访页面
    private $visitURL = NULL;

    // 来源页面
    private $refererURL = NULL;

    // 事件类型
    private $eventType = 0;

    // 事件属性
    private $eventProperty = "";

    // 从url中获取指定参数的值
    private function getQueryValue($url, $key) {
        preg_match("/(^|&|\\?|#)(" . $key . ")=([^&#]*)(&|$|#)/", $url, $matches);
        return count($matches) > 0 ? $matches[3] : NULL;
    }

    // 判断某个域名是否为另一个域名的子域名
    private function isSubDomain($subDomain, $domain) {
        $subDomain = "." . preg_replace("/:\d+/", "", $subDomain);
        $domain = "." . preg_replace("/:\d+/", "", $domain);
        $index = strpos($subDomain, $domain);
        return ($index !== FALSE && $index + strlen($domain) === strlen($subDomain));
    }

    // 判断某个域名是否被包含在域名列表中
    // 是则返回列表中匹配的域名，否则返回FALSE
    private function matchDomainList($hostName) {
        foreach ($this->domainList as $domain) {
            if ($this->isSubDomain($hostName, $domain)) {
                return $domain;
            }
        }
        return FALSE;
    }

    // 获取来源类型
    private function getSourceType(
        $currentHost, 
        $refererHost, 
        $currentPageVisitTime, 
        $lastPageVisitTime
    ) {
        if (is_null($refererHost)   // 来源页面为空
            // 当前页面和来源页面都在域名列表内
            || ($this->matchDomainList($currentHost) !== FALSE 
                && $this->matchDomainList($refererHost) !== FALSE)
            || $currentHost === $refererHost   // 来源和当前页面同域
        ) {
            return 
                ($currentPageVisitTime - $lastPageVisitTime > $this->VISIT_DURATION) 
                ? 1 : 4;    // 直达/站内
        } 
        else {
            return 3;   // 外链
        } 
    }

    // 获取统计请求url
    private function getPixelURL() {
        // 当前页面url
        $currentURL = $this->visitURL;
        $parsedCurrentURL = parse_url($currentURL);
        $currentHost = $parsedCurrentURL["host"];

        // 来源页面url
        $refererURL = $this->refererURL;
        $parsedRefererURL = parse_url($refererURL);
        $refererHost = $parsedRefererURL["host"];

        // 当前页面的访问时间
        $currentPageVisitTime = time();

        // 前一页面的访问时间
        $lastPageVisitTime = (int)$_COOKIE["Hm_lpvt_" . $this->siteId];

        // 前一访次或当前访次的起始时间
        $lastVisitTime = $_COOKIE["Hm_lvt_" . $this->siteId];

        // 来源类型
        $sourceType = $this->getSourceType($currentHost, $refererHost, $currentPageVisitTime, $lastPageVisitTime);

        // 是否为新访次
        $isNewVisit = ($sourceType == 4) ? 0 : 1;

        // 写cookie要使用的域名
        $cookieDomain = "";

        // 每次都要更新lpvt
        setCookie(
            "Hm_lpvt_" . $this->siteId, 
            $currentPageVisitTime, 
            0, 
            "/", 
            $cookieDomain
        );

        // 在访次开始时要更新lvt
        if ($isNewVisit === 1) {
            setCookie(
                "Hm_lvt_" . $this->siteId, 
                $currentPageVisitTime, 
                time() + $this->VISITOR_MAX_AGE, 
                "/", 
                $cookieDomain
            );
        }

        $pixelURL = "http://hm.baidu.com/hm.gif" .
            "?si=" . $this->siteId .
            "&et=" . $this->eventType .
            ($this->eventProperty !== "" ? "&ep=" . str_replace("%27", "'", urlencode($this->eventProperty)) : "") .
            "&nv=" . $isNewVisit .
            "&st=" . $sourceType .
            (!is_null($lastVisitTime) ? "&lt=" . $lastVisitTime : "") .
            (!is_null($refererURL) ? "&su=" . urlencode($refererURL) : "") .
            ($this->visitURL !== "" ? "&u=" . urlencode($this->visitURL) : "") .
            "&v=" . $this->VERSION .
            "&rnd=" . rand(10e8, 10e9);

        // 指定广告跟踪
        $adTags = array("cm", "cp", "cw", "ci", "cf");
        $adKeys = array("hmmd", "hmpl", "hmkw", "hmci", "hmsr");
        for ($i = 0; $i < count($adKeys); $i++) {
            $key = $adKeys[$i];
            $value = $this->getQueryValue($currentURL, $key);
            if (!is_null($value)) {
                $pixelURL .= "&" . $adTags[$i] . "=" . urlencode($value);
            }
        }

        // 因为url要显示在html中，这里需要做html转义
        return htmlspecialchars($pixelURL);
    }

    // 构造函数
    public function __construct($siteId) {
        $this->siteId = $siteId;
    }

    // 设置站点id
    public function setAccount($siteId) {
        $this->siteId = $siteId;
    }

    // 设置域名列表
    // 变长参数
    public function setDomainName($domainList) {
        $this->domainList = func_get_args();
    }

    // 设置来源页面
    public function setReferrerOverride($url) {
        $this->refererURL = $url;
    }

    // 发送pv统计请求
    public function trackPageView($url) {
        $this->eventType = 0;
        $this->eventProperty = "";
        $this->visitURL = $url;
        return $this->getPixelURL();
    }
}
?>

index.php

<?php                                                                           
// 这几行代码请添加到页面的最顶部                                               
// 请把"站点id"替换成您站点的id（js统计代码的 hm.baidu.com/h.js%3F 之后的部分） 
require("hm.php");                                                              
$_hmt = new _HMT("dbe397b0a5ed652d2c6be5c367251663");                           
$_hmt->setDomainName("126.com", "21cn.com");                                    
$_hmt->setReferrerOverride("http://21cn.com/");                                 
$_hmtPixel = $_hmt->trackPageView("http://126.com/");    
?>                                                                              
                                                                                
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.3//EN" "http://www.wapforum.org/DTD/wml13.dtd">
<wml>                                                                           
    <card title="百度统计WAP页面监控演示">                                   
        <img src="<?php echo $_hmtPixel; ?>" width="0" height="0" />
        <p>这里是用户页面中的原有内容</p>                                       
    </card>                                                                     
</wml>