钉钉通过code获取用户信息的实例(PHP)

namespace app\ding\controller;

use think\Config;

class Index
{
	public function getUserID($code)
	{
		$url = "https://oapi.dingtalk.com/user/getuserinfo?access_token=".$this->getAccessToken()."&code=".$code;
		
		$user = $this->http($url);
		
		return json_decode($user,JSON_UNESCAPED_UNICODE);
	}
	
	public function getUserInfo($userid)
	{
		$url = "https://oapi.dingtalk.com/user/get?access_token=".$this->getAccessToken()."&userid=".$userid;
		
		$userinfo = $this->http($url);
		
		return json_decode($userinfo,JSON_UNESCAPED_UNICODE);		
	}
	
    public function getAccessToken()
    {
		$config = Config();
		
		$appkey = $config['ding_auto_login_appkey'];
		$appsecret = $config['ding_auto_login_appsecret'];		
		
		//定义token文件和路径，默认位于应用目录下
		$token_file_name = APP_PATH.'/ding_access_token.php';
		//如果token文件存在
        if(file_exists($token_file_name)){
			//json解码
		    $token_file_content = json_decode($this->get_php_file($token_file_name));
			//如果token超时了
			if($token_file_content->expire_time < time())
			{
				//从接口获取token
				$token = $this->get_token($appkey,$appsecret,$token_file_name);
			}else{
				//否则使用缓存的token
				$token = $token_file_content->access_token;
			}
        //否则token文件不存在	
		}else{
			//从企业微信接口获取token
            $token = $this->get_token($appkey,$appsecret,$token_file_name);
		}
		
		return $token;
    }
	
    private function get_token($appkey,$appsecret,$token_file_name)
	{
		$url = "https://oapi.dingtalk.com/gettoken?appkey=".$appkey."&appsecret=".$appsecret;
		$get_result = json_decode($this->http($url),true);
		if($get_result['errcode'] == '0')
		{
			$new_token = (object)[];
			$token = $get_result['access_token'];         
			$new_token->expire_time = time() + 7000;
			$new_token->access_token = $token;
			$this->set_php_file($token_file_name,json_encode($new_token));
		}else{
			$token = 'get_token_error';
		}
		
        return 	$token;
	}
	
	private function get_php_file($filename) 
	{ 
		return trim(substr(file_get_contents($filename), 15));
	}     

	private function set_php_file($filename,$content) {  
		$fp = fopen($filename, "w");
		fwrite($fp, "<?php exit();?>" . $content);
		fclose($fp);
		
		return;
	}
	
	public function http($url,$data=null) 
	{
		$curl = curl_init($url);
		curl_setopt($curl, CURLOPT_HEADER, 0);
        if(!empty($data)) 
		{
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($curl, CURLOPT_TIMEOUT, 500);
		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
		curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
		curl_setopt($curl, CURLOPT_URL, $url);
		$res = curl_exec($curl);
		curl_close($curl);
		
		return $res;
	}	
}