$appid="*****";
$appsecret = "***********";
$currentURL='http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']; 
if (isset($_GET['code'])){
	$code=$_GET['code'];
}else{
	$url="https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appid."&redirect_uri=".$currentURL."&response_type=code&scope=snsapi_base&state=1#wechat_redirect";
	Header( "Location: ".$url );
}
 
function getPortData($url){//请求函数
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // https请求 不验证证书和hosts
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
	curl_setopt($ch, CURLOPT_URL, $url); //定义表单提交地址
	curl_setopt($ch, CURLOPT_POST, 0);   //定义提交类型 1：POST ；0：GET
	curl_setopt($ch, CURLOPT_HEADER, false); //定义是否显示状态头 1：显示 ； 0：不显示
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);//定义是否直接输出返回流
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	$r = curl_exec($ch);
	$r = json_decode($r);
	if($error=curl_error($ch)){
		die($error);
	}
	curl_close($ch);
	return $r;
}
 
//OAuth2.0获取OpenID
$url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$appsecret."&code=".$code."&grant_type=authorization_code";
$r = getPortData($url);
$user_openid = $r->openid;
 
//普通接口获取ACCESS_TOKEN
$url2 = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
$r = getPortData($url2);
$user_access_token = $r->access_token;
 
$url3 = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=".$user_access_token."&openid=".$user_openid ;
$r = getPortData($url3);
//var_dump($r);
 
echo $r->subscribe;