PHP使用微信开发模式实现搜索已发送图文及匹配关键字回复的方法

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<?php
$wechatObj = new wechatappmsg();
$wechatObj->getappmsg('这里是json');
class wechatappmsg{
  function getappmsg($content){
    //require_once 'db.php';
    $jsonstr=$content;
    //   $jsonstr='{"msg_item":[{"id":79544,"type":9},{}]}';
    $jsonstr = iconv('gbk', 'utf-8', $jsonstr);
    $result = json_decode($jsonstr);
    $name=$result->msg_item;
    // var_dump($name);
    //   echo '<br/>json:'.$result;
    $size=count($name);
    echo '<br/>size:'.$size;
    //  exit;
    for($i=0;$i<$size;$i++){
      $multi_item=$name[$i]->multi_item;
      $size2=count($multi_item);
      $app_id=$name[$i]->app_id;
      $create_time=$name[$i]->date_time;//发送时间
      //  echo '<br/>app_id:'.$app_id;
      $create_time=date ("Y-m-d H:i:s", $create_time);//时间转换
      echo '<br/>create_time:'.$create_time;
      for($j=0;$j<$size2;$j++){
        $title=$multi_item[$j]->title;//标题
        $pic_url=$multi_item[$j]->cover;//图片地址
        $digest=$multi_item[$j]->digest;//简要
        $content_url=$multi_item[$j]->content_url;//图文地址
        $t = iconv('utf-8', 'gbk', $title);
        echo '<br/>title:'.$t;
        echo '<br/>Link:'.$content_url;
        preg_match("/mid=([0-9]+)&/",$content_url,$string);
        $app_mid=$string[1];//一次发送的多个图文，这个ID值可以判断这两个图文是同一次发送的
        echo '<br/>app_mid:'.$app_mid;
        //这里可以直接进行入库
//$x=saveappmsg($pic_url,$title,$digest,$content_url,$create_time,$app_mid);
 sleep(3);
      }
      echo '<br/>-------------------------------------';
    }
  }
}
?>