用户关注接口实现

<?php
include './hcWeChat/hcWeChat.php';
/* 消息识别 */
$hcWeChat->getMsg();
if($hcWeChat->msgType == 'event'){
    switch($hcWeChat->event){
        //关注
    case 'subscribe':
        //获取用户信息
        $user = $hcWeChat->getUser($hcWeChat->openId);
        $hcWeChat->reTextMsg($user['nickname'].'您好，感谢关注 ^_^');
    break;
    //......
    }
}

用户取消关注接口实现

<?php
include './hcWeChat/hcWeChat.php';
/* 消息识别 */
$hcWeChat->getMsg();
if($hcWeChat->msgType == 'event'){
    switch($hcWeChat->event){
        //.....
    //取消关注
    case 'unsubscribe':
        file_put_contents('unsub.txt', $hcWeChat->openId.'取消关注');
    break;
    }
}