advertising/application/models/public/Weixin_model.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Weixin_model extends CI_Model {

    public function __construct()
    {
		parent::__construct();
    }

	/*
		weixin appid
	*/
	public function getAppid()
	{
		return 'wx1a526f5ba2a543fc';
	}

	/*
		weixin appsecret
	*/
	private function getAppsecret()
	{
		return '2013b1e948bffc845f73a1337c1fe787';
	}

	/*
		weixin 取token url
	*/
	private function getTokenUrl($appid, $appsecret)
	{
		return "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
	}

	/*
		weixin 取token
	*/
	function getToken()
	{
		date_default_timezone_set('prc');
		//$data = $this->Db_model->getAllData("weixin");
		$query = $this->db->query("SELECT * FROM weixin");
		$row = $query->row();

		$id = isset($row->id)?stripslashes($row->id):"";
		$token = isset($row->token)?stripslashes($row->token):"";
		$time = isset($row->updatetime)?stripslashes($row->updatetime):"";

		$now = date("Y-m-d H:i:s");

		if ($token == "0" || $token == "")
		{
			$jsoninfo = json_decode($this->https_request($this->getTokenUrl($this->getAppid(), $this->getAppsecret())), true);
			$token = $jsoninfo["access_token"];
			$this->db->query("UPDATE weixin SET	token = '".$token."' ,updatetime = '".$now."' WHERE id = '".$id."'");
		}else
		{
			$updatetime = $now;
			$now = strtotime((string)$now);
			$time = strtotime($time);
			$t = $now - $time;
			if ($t >= 7100)
			{
				$jsoninfo = json_decode($this->https_request($this->getTokenUrl($this->getAppid(), $this->getAppsecret())), true);
				$token = $jsoninfo["access_token"];
				$this->db->query("UPDATE weixin SET	token = '".$token."' ,updatetime = '".$updatetime."' WHERE id = '".$id."'");
			}
		}
		return $token;
	}

	/*
		根据openid 获取用户信息
	*/
	public function getUserInfor($openid)
	{
		$_token = $this->getToken();
		$_url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=".$_token."&openid=".$openid;
		$_result = json_decode($this->https_request($_url), true);
		return $_result;
	}
	
	/*
		oauth2 获取用户信息
	*/
	public function getOauthUserInfor($oauthtoken, $openid)
	{
		$_url = "https://api.weixin.qq.com/sns/userinfo?access_token=" . $oauthtoken . "&openid=" . $openid;
		$_result = json_decode($this->https_request($_url), true);
		return $_result;
	}
	
	/*
		使用code换取access_token
	*/
	public function getOauthToken($code)
	{
		$_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $this->getAppid() . "&secret=" . $this->getAppsecret() . "&code=" . $code . "&grant_type=authorization_code";
		$_result = json_decode($this->https_request($_url), true);
		return $_result;
	}

	/*
		weixin 提交
	*/
	private function https_request($url, $data = null)
    {       
        $curl = curl_init();       
        curl_setopt($curl, CURLOPT_URL, $url);       
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);       
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);     
		if (!empty($data))
		{
			curl_setopt($curl, CURLOPT_POST, 1);
			curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
		}
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);       
        $output = curl_exec($curl);       
        if (curl_errno($curl)) {return 'ERROR '.curl_error($curl);}       
        curl_close($curl);       
        return $output;
    }

}