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<?php namespace App\Common;
/** * OAuth2.0微信授权登录实现/微信PC扫码授权登录 * 微信/PC扫码登录,两种的方式是一样的,先跳转到微信网页获取code,通过code获取token,通过token获取用户信息 */ class WechatAuth { //高级功能->开发者模式->获取
private $app_id; private $app_secret; public function __construct($app_id, $app_secret) { $this->app_id = $app_id; $this->app_secret = $app_secret; } /** * 获取微信授权链接 * * @param string $redirect_uri 回调地址,授权后重定向的回调链接地址,请使用urlEncode对链接进行处理 * @param mixed $state 可以为空,重定向后会带上state参数,开发者可以填写a-zA-Z0-9的参数值,最多128字节 */ public function get_authorize_url($redirect_uri = '', $state = '') { return "https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$this->app_id."&redirect_uri=".urlencode($redirect_uri)."&response_type=code&scope=snsapi_userinfo&state=".$state."#wechat_redirect"; } /** * 微信PC扫码授权登录链接 * * @param string $redirect_uri 回调地址,授权后重定向的回调链接地址,请使用urlEncode对链接进行处理 * @param mixed $state 可以为空,重定向后会带上state参数,开发者可以填写a-zA-Z0-9的参数值,最多128字节 */ public function get_qrconnect_url($redirect_uri = '', $state = '') { return "https://open.weixin.qq.com/connect/qrconnect?appid".$this->app_id."&redirect_uri=".urlencode($redirect_uri)."&response_type=code&scope=snsapi_login&state=".$state."#wechat_redirect"; } /** * 获取授权token * * @param string $code 通过get_authorize_url获取到的code */ public function get_access_token($code = '') { $token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->app_id}&secret={$this->app_secret}&code={$code}&grant_type=authorization_code"; $token_data = $this->http($token_url); return json_decode($token_data, true); } /** * 获取授权后的微信用户信息 * * @param string $access_token * @param string $open_id */ public function get_user_info($access_token = '', $open_id = '') { $info_url = "https://api.weixin.qq.com/sns/userinfo?access_token={$access_token}&openid={$open_id}&lang=zh_CN"; $info_data = $this->http($info_url); return json_decode($info_data, true); } // cURL函数简单封装
function http($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); curl_close($curl); return $output; } }
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