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使用PHP调用微信API,使用微信做通知类应用的方法

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Release: 2016-06-06 19:47:32
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相比于最常用的短信和邮件的通知方式,微信有着无可比拟的优势:快速、免费,特别适合用在报警通知类应用上。 但是微信并没有提供现成的api接口来给好友发送信息,公众平台也只能被动回复。那么如何才能主动发信息呢?答案就在微信网页版。 仔细观察微信网页

相比于最常用的短信和邮件的通知方式,微信有着无可比拟的优势:快速、免费,特别适合用在报警通知类应用上。

但是微信并没有提供现成的api接口来给好友发送信息,公众平台也只能被动回复。那么如何才能主动发信息呢?答案就在微信网页版。

仔细观察微信网页版和服务器请求的记录,发现完全就是以oauth授权方式运行,完全不用考虑cookie。据此,分析请求记录,就能模拟网页版登录微信,从而实现主动向用户发送消息的功能。

以下是用到的请求:

1. 获取uuid,从返回的数据中,找到uuid

https://login.weixin.qq.com/jslogin?appid=wx782c26e4c19acffb&redirect_uri=https%3A%2F%2Fwx.qq.com%2Fcgi-bin%2Fmmwebwx-bin%2Fwebwxnewloginpage&fun=new&lang=zh_CN

2. 获取二维码图片,然后使用微信扫描

https://login.weixin.qq.com/qrcode/$this->uuid?t=webwx

3. 获取令牌,轮询,直到从返回的数据中找到window.redirect_uri=xxxx的代码,xxx就是令牌url

https://login.weixin.qq.com/cgi-bin/mmwebwx-bin/login?uuid=$this->uuid&tip=1

4. 访问令牌url,获取sid。从返回的头信息中,分析出Uin,sid和uuid,保存起来

xxxxxx

5. 初始化微信,从返回的数据中读取UserName

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$data = array(

    "BaseRequest"=>array(

        "DeviceID"  => 'e538770852445779',

        "Sid"   => $this->sid,

        "Skey"  => "",

        "Uin"   => $this->Uin,

    )

);

$this->post_contents('https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxinit', $this->encode($data));

6. 获取Skey

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$this->post_contents('https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxsync?sid=' . urlencode($this->sid), '{"BaseRequest":{"Uin":'.$this->Uin.',"Sid":"'.$this->sid.'"},"SyncKey":{"Count":0,"List":[]}}');

7. 发送消息,POST方式,

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$data = array(

    "BaseRequest" => array(

        "Uin"=> $this->Uin,

        "Sid"=> $this->sid,

        "Skey"=> $this->Skey,

        "DeviceID"=> $this->DeviceID,

    ),

    "Msg" => array(

        "FromUserName" => $this->FromUserName,

        "ToUserName" => $name,

        "Type" => 1,

        "Content" => $content,

        "ClientMsgId" => $this->ClientMsgId,

        "LocalID" => $this->ClientMsgId,

    ),

);

$str = $this->encode($data);

son_decode($this->post_contents('https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxsendmsg?sid=' . urlencode($this->sid) . '&r=' .$this->ClientMsgId, $str), true);

发送消息的经典过程为:

  1. 初始化对象,设置Uin,sid,uuid
  2. 更新Skey
  3. 发送信息

但是微信网页版长时间不登录会失效,所以还需要写个任务去ping

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$data = '{"BaseRequest":{"Uin":'.$this->Uin.',"Sid":"'.$this->sid.'"},"SyncKey":{"Count":0,"List":[]}}';

        $ret = json_decode($this->post_contents('https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxsync?sid=' . urlencode($this->sid), $data, 30), true);

微信的数据都是以json格式传输的,但是他这个json比较特殊,还需要用特别的函数来实现

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protected function encode($data){

    if(!is_array($data)){

        return $this->encode_str($data);

    }

    $ds = array();

    foreach($data as $k => $v){

        $ds [] = "\"$k\":" . $this->encode($v);

    }

    return '{' . join(',', $ds) . '}';

}

 

protected function encode_str($str){

    if(preg_match('|^\d+$|', $str)){

        return $str;

    }

    return '"' . str_replace('"', '\"', i

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