```
<?php
class weixin_jssdk{
const GET_ACCESS_TOKEN_URL = 'https://api.weixin.qq.com/cgi-bin/token';
const GET_JSAPI_TICKET_URL = 'https://api.weixin.qq.com/cgi-bin/ticket/getticket';
const GET_OAUTH_CODE_URL = 'https://open.weixin.qq.com/connect/oauth2/authorize';
const GET_OAUTH_ACCESS_TOKEN_URL = 'https://api.weixin.qq.com/sns/oauth2/access_token';
private $appid; //微信ID
private $appsecret; //微信密钥
private $cache_path; //保存access_token和jsapi_ticket 目录
private $cache_jsapi_ticket; //jsapi_ticket文件名
private $cache_access_token; //access_token文件名
private $cache_oauth_access_token; //oauth_access_token文件名
private $cache_oauth_user_access_token; //可以获取未关注的微信用户信息的oauth_user_access_token文件名
public function __construct($options = array()){
$this->appid = isset($options['appid']) ? $options['appid'] : self::LSappid;
$this->appsecret = isset($options['appsecret']) ? $options['appsecret'] : self::LSappsecret;
$this->cache_path = isset($options['cache_path']) ? $options['cache_path'] : dirname(__FILE__).'/cache/';
if(!is_dir($this->cache_path)){ @mkdir($this->cache_path,0755,true); }
$this->cache_jsapi_ticket = 'cache_jsapi_ticket_'.$this->appid.'.php';
$this->cache_access_token = 'cache_access_token_'.$this->appid.'.php';
$this->cache_oauth_access_token = 'cache_oauth_access_token_'.$this->appid;
$this->cache_oauth_user_access_token = 'cache_oauth_user_access_token_'.$this->appid;
if(session_id()==""){ session_start(); }
}
//jssdk
public function jsapi(){
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$url = $protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
$timestamp = time();
$nonceStr = self::createNonceStr();
$data['jsapi_ticket']=$this->get_jsapi_ticket();
$data['noncestr']=$nonceStr;
$data['timestamp']=$timestamp;
$data['url']=$url;
ksort($data);
$string = self::ToUrlParams($data);
$signature = sha1($string);
$signPackage = array(
"appId" => $this->appid,
"timestamp" => $timestamp,
"nonceStr" => $nonceStr,
"signature" => $signature
);
return $signPackage;
}
//获取微信收货地址
public function get_adderss(){
$oauth_access_token=$this->get_set_oauth_access_token(); //缓存里面的access_token不行，必须每次调用地址都要重新获取一下access_token
if($oauth_access_token){
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$data["url"] = $protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
if(empty($_GET['code']) || empty($_GET['state'])){
if(strpos($data["url"],'?')){
$data["url"].="&code=".$oauth_access_token['code'].'&state='.$oauth_access_token['state'];
}else{
$data["url"].="?code=".$oauth_access_token['code'].'&state='.$oauth_access_token['state'];
}
}
$data["appid"] = $this->appid;
$time = time();
$data["timestamp"] = "$time";
$data["noncestr"] = self::createNonceStr();
$data["accesstoken"] = $oauth_access_token['access_token'];
ksort($data);
$params = self::ToUrlParams($data);
$addrSign = sha1($params);
$afterData = array(
"appId" => $this->appid,
"scope" => "jsapi_address",
"signType" => "sha1",
"addrSign" => $addrSign,
"timeStamp" => $data["timestamp"],
"nonceStr" => $data["noncestr"]
);
return $parameters = json_encode($afterData);
}
}
//获取用户信息
public function get_user_info(){
$oauth_access_token=$this->get_oauth_access_token();
$url='https://api.weixin.qq.com/sns/userinfo?access_token='.$oauth_access_token['access_token'].'&openid='.$oauth_access_token['openid'].'&lang=zh_CN';
$res = json_decode($this->httpget($url),true);
return $res;
}
//刷新access_token
public function refresh_oauth_access_token(){
$oauth_access_token=$this->get_oauth_access_token();
$url='https://api.weixin.qq.com/sns/oauth2/refresh_token?appid='.$this->appid.'&grant_type=refresh_token&refresh_token='.$oauth_access_token['refresh_token'];
$res = json_decode($this->httpget($url),true);
return $res;
}
//检验授权凭证是否失效
public function is_access_token(){
$oauth_access_token=$this->get_oauth_access_token();
$url='https://api.weixin.qq.com/sns/auth?access_token='.$oauth_access_token['access_token'].'&openid='.$oauth_access_token['openid'];
$res = json_decode($this->httpget($url),true);
return $res;
}
private function get_oauth_access_token($scope='snsapi_base'){
if($scope=='snsapi_base'){
$oauth_access_token=$this->get_cache($this->cache_path.$this->cache_oauth_access_token.'_'.$_SESSION[$this->appid.'wx_openid'].".php");
}else{
$oauth_access_token=$this->get_cache($this->cache_path.$this->cache_oauth_user_access_token.'_'.$_SESSION[$this->appid.'wx_openid'].".php");
}
if(!$oauth_access_token){
//获取 并写入缓存
$re_oauth_access_token=$this->get_set_oauth_access_token($scope);
}else{
//读取缓存 并 判断是否过期 更新缓存
$data = json_decode($oauth_access_token,true);
if($data['expire_time'] < time()){
$re_oauth_access_token = $this->get_set_oauth_access_token($scope);
}else{
$re_oauth_access_token = $data;
}
}
//返回 缓存里面的数据
return $re_oauth_access_token;
}
private function get_set_oauth_access_token($scope='snsapi_base'){
if (!isset($_GET['code'])){
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$url = $protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
$urlObj['appid'] = $this->appid;
$urlObj['redirect_uri'] =urlencode($url);
$urlObj['response_type'] = 'code';
$urlObj['scope'] = $scope;
$urlObj['state'] = 'STATE'."#wechat_redirect";
$bizString = self::ToUrlParams($urlObj);
$url=self::GET_OAUTH_CODE_URL.'?'.$bizString;
Header("Location: $url");
}else{
$code = $_GET['code'];
$urlObj['appid'] = $this->appid;
$urlObj['secret'] = $this->appsecret;
$urlObj['code'] = $code;
$urlObj['grant_type'] = 'authorization_code';
$bizString = self::ToUrlParams($urlObj);
$url=self::GET_OAUTH_ACCESS_TOKEN_URL.'?'.$bizString;
$res = json_decode($this->httpget($url),true);
if($res['access_token'] && $res['openid']){
$res['expire_time'] = time() + 7000;
$res['code']=$code;
$res['state']='STATE';
$_SESSION[$this->appid.'wx_openid']=$res['openid'];
if($scope=='snsapi_base'){
$this->set_cache($this->cache_path.$this->cache_oauth_access_token.'_'.$res['openid'].".php",json_encode($res));
}else{
$this->set_cache($this->cache_path.$this->cache_oauth_user_access_token.'_'.$res['openid'].".php",json_encode($res));
}
return $res;
}
}
}
//获取ApiTicket
private function get_jsapi_ticket(){
$jsapi_ticket=$this->get_cache($this->cache_path.$this->cache_jsapi_ticket);
if(!$jsapi_ticket){
//获取 并写入缓存
$re_jsapi_ticket=$this->get_set_jsapi_ticket();
}else{
//读取缓存 并 判断是否过期 更新缓存
$data = json_decode($jsapi_ticket);
if($data->expire_time < time()){
$re_jsapi_ticket = $this->get_set_jsapi_ticket();
}else{
$re_jsapi_ticket = $data->ticket;
}
}
//返回 缓存里面的数据
return $re_jsapi_ticket;
}
private function get_set_jsapi_ticket(){
$accesstoken = $this->get_access_token();
$url = self::GET_JSAPI_TICKET_URL."?type=jsapi&access_token=".$accesstoken;
$res = json_decode($this->httpget($url));
if($res->ticket){
$data['expire_time'] = time() + 7000;
$data['ticket'] = $res->ticket;
$this->set_cache($this->cache_path.$this->cache_jsapi_ticket,json_encode($data));
return $res->ticket;
}
}
//获取access_token
private function get_access_token(){
$access_token=$this->get_cache($this->cache_path.$this->cache_access_token);
if(!$access_token){
//获取 并写入缓存
$re_access_token=$this->get_set_access_token();
}else{
//读取缓存 并 判断是否过期 更新缓存
$data = json_decode($access_token);
if($data->expire_time < time()){
$re_access_token = $this->get_set_access_token();
}else{
$re_access_token = $data->access_token;
}
}
//返回 缓存里面的数据
return $re_access_token;
}
private function get_set_access_token(){
//获取 并写入缓存
$url = self::GET_ACCESS_TOKEN_URL."?grant_type=client_credential&appid=".$this->appid."&secret=".$this->appsecret;
$res = json_decode($this->httpget($url));
if($res->access_token){
$data['expire_time'] = time() + 7000;
$data['access_token'] = $res->access_token;
$this->set_cache($this->cache_path.$this->cache_access_token,json_encode($data));
return $res->access_token;
}
}
private function get_cache($filename){
if(file_exists($filename)){
return trim(substr(file_get_contents($filename), 15));
}else{
return false;
}
}
private function set_cache($filename, $content){
$fp = fopen($filename, "w");
fwrite($fp, "<?php exit();?>" . $content);
fclose($fp);
}
//随机字符串
private static function createNonceStr($length = 16){
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
/**
* 格式化参数格式化成url参数
*/
protected static function ToUrlParams($options){
$buff = "";
foreach ($options as $k => $v){
if($k!= "sign" && $v != "" && !is_array($v)){
$buff .= $k . "=" . $v . "&";
}
}
$buff = trim($buff, "&");
return $buff;
}
//curl http get请求获取数据
private function httpget($url){
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 100);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($curl, CURLOPT_URL, $url);
$res = curl_exec($curl);
curl_close($curl);
return $res;
}
}
```
