Passing values ​​from checkbox?

Question

PHP

I have multiple checkboxes on a page,

<input type="checkbox" name="person[]">
<input type="checkbox" name="person[]">

I can fill them out while on the page. But when the page is updated, the notes naturally fly off.
I would like that after I filled in all the checkboxes, the data was remembered. But the problem is that you just need to poke into a few checkboxes and so that when you reboot, these checkboxes remain marked and somewhere the data about which checkboxes I marked were saved. I tried to pass them to the POST array, but for this I need to complete the form and the submit button, which will have to be additionally clicked, and I need to poke into the checkboxes -> refresh the page -> get the numbers of these checkboxes.
I understand that there is an interaction between JS and PHP, but I still don’t understand how to implement it

Answer 1

1. If by reload you mean just a reload and not a submitted form → use sessionStorage. It's just JS.
2. If you want data to come to you after submitting the form, its validation and processing, you need to have a storage of this data on the server side. Usually, this role is played by databases with users, bindings, etc., and here a great solution would be to use a framework in PL, in which there will be either forms, with which you save data in the model when loading this form again (say, editing anything), you will get a prepopulated form.
3. If you want to drive the form without any checks, simply passing data to POST \ GET, leading there with the form submission, then you need to generate a document generation using a PL that will parse the request and be able to do it tritely like this:

<input type="checkbox" checked="<?= $field[3] != true ?: 'checked' ?>">...

or parse the JS request and already distribute the values ​​in the loaded page.
In other words, it all depends on the end goal.

Answer 2

in order for the checkboxes not to fly off,
you can use the ajax technology, which will execute the request (send data) without reloading the page