PHP WeChat public platform development class example, PHP public platform example

PHP WeChat public platform development class example, PHP public platform example_PHP tutorial

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Release： 2016-07-13 09:58:33

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php WeChat public platform development class example, php public platform example

This article describes the php WeChat public platform development class example. Share it with everyone for your reference. The specific analysis is as follows:

ThinkWechat.php class file is as follows:

<&#63;php
class Wechat {
  /**
   * 微信推送过来的数据或响应数据
   * @var array
   */
  private $data = array();
  /**
   * 构造方法，用于实例化微信SDK
   * @param string $token 微信开放平台设置的TOKEN
   */
  public function __construct($token) {
    $this->auth($token) || exit;
    if(!empty($_GET['echostr'])){
      exit($_GET['echostr']);
    } else {
      try
      {
        $xml = file_get_contents("php://input");
        $xml = new SimpleXMLElement($xml);
        $xml || exit;
        foreach ($xml as $key => $value) {
          $this->data[$key] = strval($value);
        }
      }catch(Exception $e){
      }
    }
  }
  /**
   * 获取微信推送的数据
   * @return array 转换为数组后的数据
   */
  public function request(){
    return $this->data;
  }
  /**
   * * 响应微信发送的信息（自动回复）
   * @param string $to   接收用户名
   * @param string $from  发送者用户名
   * @param array $content 回复信息，文本信息为string类型
   * @param string $type  消息类型
   * @param string $flag  是否新标刚接受到的信息
   * @return string     XML字符串
   */
  public function response($content, $type = 'text', $flag = 0){
    /* 基础数据 */
    $this->data = array(
      'ToUserName'  => $this->data['FromUserName'],
      'FromUserName' => $this->data['ToUserName'],
      'CreateTime'  => time(),
      'MsgType'   => $type,
    );
    /* 添加类型数据 */
    $this->$type($content);
    /* 添加状态 */
    $this->data['FuncFlag'] = $flag;
    /* 转换数据为XML */
    $xml = new SimpleXMLElement('<xml></xml>');
    $this->data2xml($xml, $this->data);
    exit($xml->asXML());
  }
  /**
   * 回复文本信息
   * @param string $content 要回复的信息
   */
  private function text($content){
    $this->data['Content'] = $content;
  }
  /**
   * 回复音乐信息
   * @param string $content 要回复的音乐
   */
  private function music($music){
    list(
      $music['Title'], 
      $music['Description'], 
      $music['MusicUrl'], 
      $music['HQMusicUrl']
    ) = $music;
    $this->data['Music'] = $music;
  }
  /**
   * 回复图文信息
   * @param string $news 要回复的图文内容
   */
  private function news($news){
    $articles = array();
    foreach ($news as $key => $value) {
      list(
        $articles[$key]['Title'],
        $articles[$key]['Description'],
        $articles[$key]['PicUrl'],
        $articles[$key]['Url']
      ) = $value;
      if($key >= 9) { break; } //最多只允许10调新闻
    }
    $this->data['ArticleCount'] = count($articles);
    $this->data['Articles'] = $articles;
  }
  /**
   * 数据XML编码
   * @param object $xml XML对象
   * @param mixed $data 数据
   * @param string $item 数字索引时的节点名称
   * @return string
   */
  private function data2xml($xml, $data, $item = 'item') {
    foreach ($data as $key => $value) {
      /* 指定默认的数字key */
      is_numeric($key) && $key = $item;
      /* 添加子元素 */
      if(is_array($value) || is_object($value)){
        $child = $xml->addChild($key);
        $this->data2xml($child, $value, $item);
      } else {
        if(is_numeric($value)){
          $child = $xml->addChild($key, $value);
        } else {
          $child = $xml->addChild($key);
          $node = dom_import_simplexml($child);
          $node->appendChild($node->ownerDocument->createCDATASection($value));
        }
      }
    }
  }
  /**
   * 对数据进行签名认证，确保是微信发送的数据
   * @param string $token 微信开放平台设置的TOKEN
   * @return boolean    true-签名正确，false-签名错误
   */
  private function auth($token){
    if(empty($_GET['signature'])) return;
    /* 获取数据 */
    $data = array($_GET['timestamp'], $_GET['nonce'], $token);
    $sign = $_GET['signature'];
    /* 对数据进行字典排序 */
    sort($data,SORT_STRING);
    /* 生成签名 */
    $signature = sha1(implode($data));
    return $signature === $sign;
  }
}

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