微信后台代码，自动更新access token，并存储到数据库，从而利用access token，在用户关注或发送消息时，获取用户昵称等信息 ?php define("TOKEN", "weixin");define("NO_OAUTH2", "noOauth2");$wechatObj = n
<?php
define("TOKEN", "weixin");
define("NO_OAUTH2", "noOauth2");
$wechatObj = new wechatCallbackapiTest();
if (isset($_GET['echostr'])) {
$wechatObj->valid();
}else{
$wechatObj->responseMsg();
}
class wechatCallbackapiTest
{
//微信来源验证
public function valid()
{
$echoStr = $_GET["echostr"];
if($this->checkSignature()){
echo $echoStr;
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;
}
}
//消息处理
//仅实现了文本消息和推送事件
public function responseMsg()
{
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
if (!empty($postStr)){
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$RX_TYPE = trim($postObj->MsgType);
switch ($RX_TYPE)
{
case "text":
$resultStr = $this->receiveText($postObj);
break;
case "image":
$resultStr = $this->receiveImage($postObj);
break;
case "location":
$resultStr = $this->receiveLocation($postObj);
break;
case "voice":
$resultStr = $this->receiveVoice($postObj);
break;
case "video":
$resultStr = $this->receiveVideo($postObj);
break;
case "link":
$resultStr = $this->receiveLink($postObj);
break;
case "event":
$resultStr = $this->receiveEvent($postObj);
break;
default:
$resultStr = "unknow msg type: ".$RX_TYPE;
break;
}
echo $resultStr;
}else {
echo "";
exit;
}
}
function receiveText($object)
{
$funcFlag = 0;
$contentStr = $this->get_name($object)."，你发送的是文本，内容为：".$object->Content;
$resultStr = $this->transmitText($object, $contentStr, $funcFlag);
return $resultStr;
}
public function get_name($object)
{
$access_token=$this->readtoken();
//这里需要解决access_token 2个小时有效期的问题，
//一个思路是，新定义一个函数，只要一调用这个函数，则查找数据库上一个access_token生成的时间，对比现在的时间
//若超过2个小时，则用get方式获取新的access_token，并返回新的access_token，且存储到数据库中；
//若不到2个小时，则把数据库中已经存储的最新的access_token提取并返回；
$openid=$object->FromUserName;
//拼成获取用户信息的SSL get方式的API链接
$infourl="https://api.weixin.qq.com/cgi-bin/user/info?access_token=".$access_token."&openid=".$openid."&lang=zh_CN";
$result=$this->https_get($infourl);
//var_dump($result);
//echo $result;
$utfresult=utf8_encode($result);
$mm=json_decode($result,true);
return trim($mm['nickname']);
}
public function newtoken()
{
//$appid="wx2b558d720b186565";//此为ipad mini账号对应的appid
//$appsecret="fe9f74ef9abf75a63d6750e365d49cad";//此为ipad mini账号对应的secret
$appid="wx66c888ff7a867359";//此为iphone对应的appid
$appsecret="fad178aa420ceef67e16dd6a4812e6dc";//此为iphone账号对应的secret
$access_token_url="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
//echo $access_token_url;
$access_json=$this->https_get($access_token_url);
//$access_json='{"access_token":"sXr18Q9qklWbLFuBAi5w6B-kWeXVXW2dtHwb53Iy2wdgnebSDFs8r4NwT8uTafgB6rMXc00lsE5HayE28N9-KTHv5HyHG8b8UFxsvLBNgAU","expires_in":7200}';
//echo $access_json;
$access=json_decode($access_json,true);
//var_dump($access);
//echo $access_array['access_token'];
return $access['access_token'];
}
public function savetoken($token)
{
$host=""; //数据库服务器名称
$user=""; // 连接数据库用户名
$pw=""; // 连接数据库密码
$db=""; // 数据库的名字
//连接到mysql数据库
$conn=mysql_connect($host,$user,$pw);
//mysql_query("set names 'utf8'");
if ($conn) {
mysql_select_db ($db);
//mysql_set_charset("gbk");
//$sql = "select * from token";
$time=time();
//$token=newtoken();
//echo $time;
$sql="insert into token (time,token) VALUES ('$time','$token')";
$result = mysql_query($sql) or die("Invalid query: " . mysql_error());
//$mm=mysql_fetch_array($result);
//var_dump($mm);
mysql_free_result($result);
} else {
echo "数据库连接KO";
}
}
public function readtoken()
{
$host=""; //数据库服务器名称
$user=""; // 连接数据库用户名
$pw=""; // 连接数据库密码
$db=""; // 数据库的名字
//连接到mysql数据库
$conn=mysql_connect($host,$user,$pw);
//数据库输出编码 应该与你的数据库编码保持一致
//mysql_query("set names 'utf8'");
if ($conn) {
//选择数据库
mysql_select_db($db);
//mysql_set_charset("gbk");
//在token这个表里，按照time列降序排序，取出time列的第一个值（即limit 1）
$sql = "select time,token from token order by time desc limit 1";
//执行sql语句
$result = mysql_query ($sql) or die("Invalid query: " . mysql_error());
//获取执行后的结果，以数组保存到变量￥mm中
$mm=mysql_fetch_array($result);
mysql_free_result($result);
//用列的表头访问数组，得到最后一次存储的时间戳
$lasttime=$mm['time'];
//echo "<br><br><br><br><br>".$lasttime;
//生成现在的时间，时间戳
$timenow=time();
//如果现在的时间减去最后一次存储的时间戳，如果小于7100，则再次sql，获取已经存储到表的token，若不是，则新生成token，并存储到数据库
if($timenow-$lasttime<7100){
$tokenread=$mm['token'];
return $tokenread;
//echo "<br><br><br><br><br>".$tokenread;
}else{
$newtoken=$this->newtoken();
$this->savetoken($newtoken);
$tokenread=$newtoken;
return $tokenread;
}
}
}
public function https_get($url)
{
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
//curl_setopt($curl, CURLOPT_POST, 1);
//curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($curl);
if (curl_errno($curl)) {
return 'Errno'.curl_error($curl);
}
curl_close($curl);
return $result;
}
private function receiveEvent($object)
{
$contentStr = "";
switch ($object->Event)
{
case "subscribe":
//$uername=json_decode($object,true);
$contentStr = "欢迎你！".$this->get_name($object);
//当用户订阅后，需要存储下所有用户的信息，openid，昵称，地址等等；
//调用存储 函数，需要新创建。。。。
break;
case "unsubscribe":
$contentStr = "";
break;
case "CLICK":
switch ($object->EventKey)
{
case NO_OAUTH2:
//$contentStr = NO_OAUTH2;
$contentStr = "[<a href='http://www.xxx.com/weixin/courseCenter.php?wx_openid=" . $object->FromUserName . "'>我的课堂</a>]
[<a href='http://www.xxx.com/weixin/orderList.php?wx_openid=" . $object->FromUserName . "'>订单记录</a>]";
break;
case "Oauth2":
$contentStr = $this->toAuthMsg();
break;
default:
$contentStr = "你点击了菜单: ".$object->EventKey;
break;
}
break;
default:
$contentStr = "receive a new event: ".$object->Event;
break;
}
$resultStr = $this->transmitText($object, $contentStr);
if($contentStr == NO_OAUTH2){
header("location: http://www.xxx.com/weixin/courseCenter.php?wx_openid=" . $object->FromUserName);
exit;
}
return $resultStr;
}
private function transmitText($object, $content, $flag = 0)
{
$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
<FuncFlag>%d</FuncFlag>
</xml>";
$resultStr = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content, $flag);
return $resultStr;
}
private function toAuthMsg()
{
$resultStr = "<a href='https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx834404c1d1dbb5ec&redirect_uri=http://www.xxx.com/weixin/oauth2_code.php&response_type=code&scope=snsapi_base&state=liutest012#wechat_redirect'>马上绑定</a>";
return $resultStr;
}
}
?>