Where to find the 4 parameters APPID APPSECRET MCHID KEY needed to set WeChat payment
Among them, APPID APPSECRET is the appid and appsecret of the official account, which can be viewed in the WeChat public platform background
Development》Basic Configuration》Developer ID
MCHID and KEY are the WeChat payment merchant number and API key, which can be viewed in the background of the WeChat payment merchant platform
MCHID is in Account Settings>Account Information>Basic Information
How to set API key Account Settings》API Security》API Key
Fill in the above parameters into the WeChat payment settings.
The login account and password of the WeChat payment merchant platform can be checked from the Tencent notification email received after successfully applying for WeChat payment