Questions about the PHP search function and form submission

I have a search function on the home page for questions about the PHP search function and form submission. I need to query the database based on the name and time and then display it on the home page. ask how to do this, I hope the search results will appear on this Homepage. I know that the form can be submitted, but I don't know how to submit the form to the current page rather than to other pages for processing ?, & L PHP search function and form submission problems
I have a search function on the home page. I need to query the database based on the name and time and then display it on the home page. how can I do this, I want the search results to appear on this Homepage. I know that the form can be submitted, but I don't know how to submit the form to the current page rather than to other pages for processing?

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Just write it in this way. The search function is troublesome. you 'd better find a ready-made download on the internet. if you write it yourself, it cannot be written by the newbie, I will send you a reply if necessary.