基于PHP微信网页获取用户信息的实例分析

index.php如下:

//scope=snsapi_base 实例
$appid=&＃39;你的AppId&＃39;;
$redirect_uri = urlencode ( &＃39;http://你的域名/getUserInfo.php&＃39; );
$url ="https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_base&state=1#wechat_redirect";
header("Location:".$url);

getUserInfo.php如下:

$appid = "你的AppId";
$secret = "你的AppSecret";
$code = $_GET["code"];
//第一步:取全局access_token
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$secret";
$token = getJson($url);
//第二步:取得openid
$oauth2Url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$secret&code=$code&grant_type=authorization_code";
$oauth2 = getJson($oauth2Url);
 
//第三步:根据全局access_token和openid查询用户信息
$access_token = $token["access_token"];
$openid = $oauth2[&＃39;openid&＃39;];
$get_user_info_url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=$access_token&openid=$openid&lang=zh_CN";
$userinfo = getJson($get_user_info_url);
//打印用户信息
print_r($userinfo);
function getJson($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); 
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
return json_decode($output, true);
}

scope为snsapi_userinfo 用户不用关注公众号，也能取到信息，但是会有一个界面让用户去点击确认！相当于一个登录授权吧！

代码实例

index.php如下:

//scope=snsapi_userinfo实例
$appid=&＃39;你的AppId&＃39;;
$redirect_uri = urlencode ( &＃39;http://你的域名/getUserInfo.php&＃39; );
$url ="https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect";
header("Location:".$url);

getUserInfo.php如下:

$appid = "你的AppId";
$secret = "你的AppSecret";
$code = $_GET["code"];
//第一步:取得openid
$oauth2Url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$secret&code=$code&grant_type=authorization_code";
$oauth2 = getJson($oauth2Url);
//第二步:根据全局access_token和openid查询用户信息
$access_token = $oauth2["access_token"];
$openid = $oauth2[&＃39;openid&＃39;];
$get_user_info_url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=$access_token&openid=$openid&lang=zh_CN";
$userinfo = getJson($get_user_info_url);
//打印用户信息
print_r($userinfo);
function getJson($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
return json_decode($output, true);
}

测试步骤:

创建index.php和getUserInfo.php两个文件后

先测试:scope为snsapi_base

1)先关注公众账号

2)将网址: http://你的域名/index.php 生成一个二维码!

3)用微信扫一扫

再测试:scope为snsapi_userinfo

1)替换代码

2)取消关注当前公众号.

3)然后用微信扫一扫,刚刚你生成的二维码.

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