What should I do if I want to create a website with local classification information in a third-level city?

I used java to create a local classified information website in a third-level city. I used to develop a large system (team) using the SSH framework and made several small websites, because jsp space is relatively expensive, so now I want to use PHP for development. I have compared php168 and Ant Financial's classification information. I think php is better, however, the free version is used to create a website with local classification information in a third-level city.
I used to work in java. I used to develop a large system (team) using the SSH framework. I also made several small websites because jsp space is expensive, so now I want to use PHP for development and compare the classification information made by php168 and Ant Financial. I think php is better, but there are many problems with using the free version, if you develop your own product, it may take a lot of work. you may not be able to seek a pivot. thank you ~~~~

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Select a good, fully open-source database as the basis. secondary development requires less work.
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There are fewer open-source products ..

I don't want to talk about open source. why?

You can write things on your own. you can upgrade and add functions later.

Simple code can also be used to write a very good website, such as hao123.

The key is your persistence and continuous progress ..