wechat-php-sdk
WeChat public platform php development kit, weixin developer SDK
... to share multiple official accounts and mobile applications, you need to go to the WeChat open platform to bind these official accounts and applications to Under an open platform account, after binding, although a user has multiple different OpenIDs for multiple official accounts and applications, he has only one UnionID for all official accounts and applications under the same open platform account. Management-Obtain user basic information (UnionID mechanism) documents for details.