What is the disadvantage of using PHP as a background for SaaS platform?

Background
1. A SaaS product is currently being made, the main experimental and experimental science field
2. In order to quickly develop the backend, PHP is selected

Problem
1. What problems may be encountered as the number of users grows
2. How to respond to problems

At present, we are looking for a master to do, you can contact me

Reply content:

Background
1. A SaaS product is currently being made, the main experimental and experimental science field
2. In order to quickly develop the backend, PHP is selected

Problem
1. What problems may be encountered as the number of users grows
2. How to respond to problems

At present, we are looking for a master to do, you can contact me

1php later encounter maintenance problems, if you use some of the framework will bring performance problems
2 better maintainability and performance than PHP with Java or Golang

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