grant.php

<?php
      
	$app_id = "app_id";
    $app_secret = "app_secret";
	
    if($_GET['code']){
		$access_token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $app_id . "&secret=" . $app_secret . "&code=".$_GET['code'] . "&grant_type=authorization_code";
		$access_token_arr = json_decode(file_get_contents($access_token_url), true);
		$refresh_url = "https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=".$app_id."&grant_type=refresh_token&refresh_token=" . $access_token_arr["refresh_token"];
		$refresh_arr = json_decode(file_get_contents($refresh_url), true);
		$userinfo_url = "https://api.weixin.qq.com/sns/userinfo?access_token=" . $refresh_arr["access_token"] . "&openid=".$refresh_arr["openid"] . "&lang=zh_CN";
        $time = time();
				
		require_once('dao/SchoolMateDao.php');
		$content = file_get_contents($userinfo_url);
		$userinfo = json_decode(str_replace("\\","",$content), true);
		$schoolMateDao = new SchoolMateDao();
		$model = $schoolMateDao -> find(array('mate_openid' => $userinfo['openid']));
		
		$time = time();
				
		if(count($model) == 0)
			$goto_url = "schoolmate-save.php?time=" . $time . "&userinfo=" . $content;
		else
			$goto_url = "advice-make.php?time=" . $time . "&mate_openid=".$userinfo['openid'];

		header("location: " . $goto_url);
	}

?>