php版微信公众平台之微信网页登陆授权示例

//换成自己的接口信息
$appid = 'XXXXX';
header('location:https://open.weixin.qq./connect/oauth2/authorize?appid='.$appid.'&redirect_uri=127.0.0.1/oauth.php&response_type=code&scope=snsapi_userinfo&state=123&connect_redirect=1#wechat_redirect');

<?php
$code = $_GET['code'];
$state = $_GET['state'];
//换成自己的接口信息
$appid = 'XXXXX';
$appsecret = 'XXXXX';
if (emptyempty($code)) $this->error('授权失败');
$token_url = 'https://api.weixin.qq./sns/oauth2/aess_token?appid='.$appid.'&secret='.$appsecret.'&code='.$code.'&grant_type=authorization_code';
$token = json_decode(file_get_contents($token_url));
if (isset($token->errcode)) {
 echo '<h1>错误</h1>'.$token->errcode;
 echo '<br/><h2>错误信息</h2>'.$token->errmsg;
 exit;
}
$aess_token_url = 'https://api.weixin.qq./sns/oauth2/refresh_token?appid='.$appid.'&grant_type=refresh_token&refresh_token='.$token->refresh_token;
//转成对象
$aess_token = json_decode(file_get_contents($aess_token_url));
if (isset($aess_token->errcode)) {
 echo '<h1>错误</h1>'.$aess_token->errcode;
 echo '<br/><h2>错误信息</h2>'.$aess_token->errmsg;
 exit;
}
$user_info_url = 'https://api.weixin.qq./sns/userinfo?aess_token='.$aess_token->aess_token.'&openid='.$aess_token->openid.'&lang=zh_CN'; //开源软件:phpfensi.
//转成对象
$user_info = json_decode(file_get_contents($user_info_url));
if (isset($user_info->errcode)) {
 echo '<h1>错误</h1>'.$user_info->errcode;
 echo '<br/><h2>错误信息</h2>'.$user_info->errmsg;
 exit;
}
//打印用户信息
echo '<pre>';
print_r($user_info);
echo '</pre>';
?>