TP5框架下微信授权登录的代码实现

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新建配置文件wechat.php

<?php
return [
	&#39;oauth&#39; => [
		&#39;appid&#39;     => &#39;***&#39;,
        &#39;appsecret&#39;     => &#39;***&#39;,
	],
];

新建extend\wechat\WechatOauth.php

<?php
namespace wechat;

/**
 * @package 微信授权控制器
 */
class WechatOauth{
    //微信授权配置信息
    private $wechat_config = [
        &#39;appid&#39;     => &#39;&#39;,
        &#39;appsecret&#39;     => &#39;&#39;,
    ];

    public function __construct() {
        $this->wechat_config = $this->wechatConfig();
    }
    /**
     * 获取秘钥配置
     * @return [type] 数组
     */
    public function wechatConfig() {
        $wechat_config = array_merge($this->wechat_config,config(&#39;wechat.oauth&#39;));
        return $wechat_config;
    }
     /**
     * 获取openid
     * @return string|mixed
     */
    public function getUserAccessUserInfo($code = "")
    {
        
        if(empty($code)){
            $baseUrl = request()->url(true);
            $url = $this->getSingleAuthorizeUrl($baseUrl, "123");                
            Header("Location: $url");
            exit();
        }else{
            $access_token = $this->getSingleAccessToken($code);
            return $this->getUserInfo($access_token);
        }
    }
    /**
     * 微信授权链接
     * @param  string $redirect_uri 要跳转的地址
     * @return [type]               授权链接
     */
    public function getSingleAuthorizeUrl($redirect_url = "",$state = &#39;1&#39;) {
        $redirect_url = urlencode($redirect_url);
        return "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" . $this->wechat_config[&#39;appid&#39;] . "&redirect_uri=".$redirect_url."&response_type=code&scope=snsapi_userinfo&state={$state}#wechat_redirect"; 
    }
    /**
     * 获取token
     * @return [type] 返回token 
     */
    public function getSingleAccessToken($code) {
        $url = &#39;https://api.weixin.qq.com/sns/oauth2/access_token?appid=&#39;.$this->wechat_config[&#39;appid&#39;].&#39;&secret=&#39;.$this->wechat_config[&#39;appsecret&#39;].&#39;&code=&#39;.$code.&#39;&grant_type=authorization_code&#39;;    

        $access_token = $this->https_request($url);
        return $access_token;     
    }
   
    /**
     * 发送curl请求
     * @param $url string
     * @param return array|mixed
     */
    public function https_request($url)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $AjaxReturn = curl_exec($curl);
        //获取access_token和openid,转换为数组
        $data = json_decode($AjaxReturn,true);
        curl_close($curl);
        return $data;
    }
     /**
     * @explain
     * 通过code获取用户openid以及用户的微信号信息
     * @return array|mixed
     * @remark
     * 获取到用户的openid之后可以判断用户是否有数据，可以直接跳过获取access_token,也可以继续获取access_token
     * access_token每日获取次数是有限制的，access_token有时间限制，可以存储到数据库7200s. 7200s后access_token失效
     **/
    public function getUserInfo($access_token = [])
    {
        if(!$access_token){
            return [
                &#39;code&#39; => 0,
                &#39;msg&#39; => &#39;微信授权失败&#39;, 
            ];
        }
        $userinfo_url = &#39;https://api.weixin.qq.com/sns/userinfo?access_token=&#39;.$access_token[&#39;access_token&#39;].&#39;&openid=&#39;.$access_token[&#39;openid&#39;].&#39;&lang=zh_CN&#39;;
        $userinfo_json = $this->https_request($userinfo_url);
    
        //获取用户的基本信息，并将用户的唯一标识保存在session中
        if(!$userinfo_json){
            return [
                &#39;code&#39; => 0,
                &#39;msg&#39; => &#39;获取用户信息失败！&#39;, 
            ];
        }
        return $userinfo_json;
    }
}

控制器调用

public function index()
    {
       $wchat = new \wechat\WechatOauth();
    
       $code = request()->param('code',"");
       $user = $wchat->getUserAccessUserInfo($code);
    }

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