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85 lines
2.2 KiB
85 lines
2.2 KiB
7 months ago
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<?php
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class Ctrl_Token extends Ctrl_Base{
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//应用的参数
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public $appID = 'wx815a05389f6d8815';
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public $appsecret = 'b512db03f314e1f7e0bad35702546440';
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//存储token信息的文件路径
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public $tokenFile = './token.txt';
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public $tokenFileLifeTime = 7200;//有效时间
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function get($url){
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//初始化curl
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$ch = curl_init($url);
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//设置请求参数
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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//发送
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$res = curl_exec($ch);
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//返回执行的结果
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return $res;
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}
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//返回token字符串
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public function getToken(){
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//检测缓存是否已经过期
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if(!$this->checkFileExists() || $this->checkFileExpire()){
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//请求微信服务器获取token字符串
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$token = $this->requestToken();
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return $token;
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}
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//如果文件存在并且没有过期
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return $this->readToken();
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}
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//检测token文件是否存在
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public function checkFileExists(){
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return file_exists($this->tokenFile);
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}
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//请求微信服务器获取token字符串
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public function requestToken(){
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//获取token的接口地址
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$url='https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$this->appID.'&secret='.$this->appsecret;
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//发起get请求
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$res = $this->get($url);
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//获取token字符串
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$data = json_decode($res, true);
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//判断
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if(!empty($data['access_token'])){
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//获取成功的话
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$this->writeToken($data['access_token']);
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return $data['access_token'];
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}else{//执行失败 返回请求的结果字符串
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echo '获取token失败,错误代码为'.$res;die;
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}
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}
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//将token字符串写入文件中
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public function writeToken($token){
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file_put_contents($this->tokenFile, $token);
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}
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//检测token文件是否过期 最后修改时间 有效时间 当前时间
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public function checkFileExpire(){
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// 获取最后的修改事件
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$mtime = filemtime($this->tokenFile);
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//如果两个时间之和小于当前时间 意味着文件已经过期
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if($mtime + $this->tokenFileLifeTime < time()){
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return true;
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}else{
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return false;
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}
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// return filemtime($this->tokenFile) + $this->tokenFileLifeTime < time();
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}
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//从文件中直接读取token
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public function readToken(){
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return file_get_contents($this->tokenFile);
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}
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}
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?>
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