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php微信公众平台开发类实例_php技巧

WBOY
WBOYOriginal
2016-05-16 20:18:34849browse

本文实例讲述了php微信公众平台开发类。分享给大家供大家参考。具体分析如下:

ThinkWechat.php类文件如下:

<&#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;
  }
}

希望本文所述对大家的php程序设计有所帮助。

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