首先,与微信连接并把发送者的内容写入一个文件中,写一个方法valid(),
define("TOKEN", "weixin");//必须与微信中的TOKEN相同
$wechatObj = new wechatCallbackapiTest();
$wechatObj->responseMsg();
class wechatCallbackapiTest
{
public function valid()
{
$echoStr = $_GET["echostr"];
if($this->checkSignature()){
echo $echoStr;
exit;
}
}
在自动回复消息,写一个方法responseMsg(),里边回复中的内容是xml类型的。
public function responseMsg()
{
//get post data, May be due to the different environments
// $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
$postStr = file_get_contents("php://input");
file_put_contents("msg.txt", $postStr,FILE_APPEND);//把微信发送者的内容写入msg.txt文件
//extract post data
if (!empty($postStr)){//判断发送者是否发送消息
$postObj = simplexml_load_string($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 = "Welcome to wechat world!";
$contentStr = $this->reply($keyword);
$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
echo $resultStr;
}else{
echo "Input something...";
}
}else {
echo "";
exit;
}
}
public function reply($keyword){
if($keyword==="天气"){//如果输入天气,就回复“天朗气清,惠风和畅”
$contentStr = "天朗气清,惠风和畅";
return $contentStr;
}elseif($keyword==="你好"){
$contentStr="niece";
return $contentStr;
}else{
$contentStr="What?";
return $contentStr;
}
}
}