没时间多写，直接上代码。

第一步：获取code，其中的链接可以通过任何方式生成，也可以用微信公众号菜单

<?php$APPID='wx7********6beb9db';  //填写高级调用功能的app id$appsecret='ce03f4********09c3b80ae6f1c270d5';  //填写高级调用功能的密钥$REDIRECT_URI='http://www.***.***:81/wechat/test/getcode_2.php';$scope='snsapi_base';//$scope='snsapi_userinfo';//需要授权$state=1;$url='https://open.weixin.qq.com/connect/oauth2/authorize?appid='.$APPID.'&redirect_uri='.urlencode($REDIRECT_URI).'&response_type=code&scope='.$scope.'&state='.$state.'#wechat_redirect';echo "url: ".$url;header("Location:".$url);?>

第二步： 按步骤获取：access_token、用户openid、用户基本信息

<?php$APPID='wx7********6beb9db';  //填写高级调用功能的app id$APPSECRET='ce03f4********09c3b80ae6f1c270d5';  //填写高级调用功能的密钥$code = $_GET["code"];//$get_token_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$APPID.'&secret='.$APPSECRET.'&code='.$code.'&grant_type=authorization_code';$get_token_url="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$APPID&secret=$APPSECRET";$res = post($get_token_url);$json_obj = json_decode($res,true);//根据openid和access_token查询用户信息$access_token = $json_obj['access_token'];$get_openid_url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$APPID.'&secret='.$APPSECRET.'&code='.$code.'&grant_type=authorization_code';$res = post($get_openid_url);$json_obj = json_decode($res,true);$openid = $json_obj['openid'];$get_user_base_info_url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=$access_token&openid=$openid&lang=zh_CN";$res = post($get_user_base_info_url);$param = base64_encode($res);$url = "http://218.***.***.10:8151/HiRunAdd.aspx?p=$param";header("Location:".$url);
/*$get_userinfo_url = "https://api.weixin.qq.com/sns/userinfo?access_token=".$access_token."&openid=".$openid."&lang=zh_CN";$res = post($get_userinfo_url);//解析json$user_obj = json_decode($res,true);$_SESSION['user'] = $user_obj;print_r($user_obj);echo "<br/>";
*/function post($url){echo "url: $url <br/>";$ch = curl_init();curl_setopt($ch,CURLOPT_URL,$url);curl_setopt($ch,CURLOPT_HEADER,0);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);$res = curl_exec($ch);curl_close($ch);echo "resp: $res <br/><br/>";return $res;
}
?>

等到用户 基本信息格式如下：

{"subscribe": 1,   //是否已订阅"openid": "oZA7CjhnBRG0SziGtMG216EK8L-g",  //用户openid"nickname": "碎石头",       //用户昵称"sex": 1,                          //用户性别"language": "zh_CN",       //用户所用语言"city": "所在城市",  "province": "所在省份", "country": "中国", "headimgurl": "http://wx.qlogo.cn/mmopen/qE9MKluetOnjPBkUB95h3vo4HsStkrKEQtYVgD6iad1yib75TW92OHQyZYgIialhMQ2tKe4iaciakAv92o0U1Y9cPug/0",   //用户头像地址"subscribe_time": 1434330625,   //用户订阅时间"remark": "",     //备注"groupid": 0       //用户所在用户组，如果有分组的话
}