【微信開發學習筆記】01消息自動回復&關鍵詞自動回復

消息自動回復

   添加第10行代碼，作用是調用第22行的responseMsg回復信息方法

<?php
/**
  * wechat php test
  */
//define your token
define("TOKEN", "test");
$wechatObj = new wechatCallbackapiTest();
//$wechatObj->valid();
//調用回復方法
$wechatObj -> responseMsg();
class wechatCallbackapiTest
{
    public function valid()
    {
        $echoStr = $_GET["echostr"];
        //valid signature , option
        if($this->checkSignature()){
            echo $echoStr;
            exit;
        }
    }
    public function responseMsg()
    {
        //get post data, May be due to the different environments
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
        //extract post data
        if (!empty($postStr)){
                                                                                                                            
                $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $keyword = trim($postObj->Content);
                $time = time();
                $textTpl = "<xml>
                            <ToUserName><![CDATA[%s]]></ToUserName>
                            <FromUserName><![CDATA[%s]]></FromUserName>
                            <CreateTime>%s</CreateTime>
                            <MsgType><![CDATA[%s]]></MsgType>
                            <Content><![CDATA[%s]]></Content>
                            <FuncFlag>0</FuncFlag>
                            </xml>";      
                if(!empty( $keyword ))
                {
                    $msgType = "text";
                    $contentStr = "Hello,歡迎關注";
                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                    echo $resultStr;
                }else{
                    echo "Input something...";
                }
        }else {
            echo "";
            exit;
        }
    }
                                                                                                                    
    private function checkSignature()
    {
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];
                                                                                                                            
        $token = TOKEN;
        $tmpArr = array($token, $timestamp, $nonce);
        sort($tmpArr);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );
                                                                                                                    
        if( $tmpStr == $signature ){
            return true;
        }else{
            return false;
        }
    }
}
?>

第46行代碼是自動回復的內容

$contentStr = "Hello,歡迎關注";

關鍵詞自動回復

用if語句進行判斷，if語句格式為：if($keyword== "手機"){}

if (!empty($postStr)){
                                                             
                $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $keyword = trim($postObj->Content);
                $time = time();
                $textTpl = "<xml>
                            <ToUserName><![CDATA[%s]]></ToUserName>
                            <FromUserName><![CDATA[%s]]></FromUserName>
                            <CreateTime>%s</CreateTime>
                            <MsgType><![CDATA[%s]]></MsgType>
                            <Content><![CDATA[%s]]></Content>
                            <FuncFlag>0</FuncFlag>
                            </xml>";       
                if(!empty( $keyword ))
                {
                    $msgType = "text";
                    $contentStr = "Hello";
                    if($keyword == "手機") //關鍵詞是手機時回復內容
                    {
                        $contentStr = "你回復的關鍵詞是手機";
                    }
                    if($keyword == "電腦") //關鍵詞是手機時回復內容
                    {
                        $contentStr = "你回復的關鍵詞是電腦";
                    }
                    if($keyword == "相機") //關鍵詞是手機時回復內容
                    {
                        $contentStr = "你回復的關鍵詞是相機";
                    }
                    $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                    echo $resultStr;
                }else{
                    echo "Input something...";
                }
        }else {
            echo "";
            exit;
        }

關鍵詞為“手機”時回復內容

$contentStr= "你回復的關鍵詞是手機";