Get blocks pos and use them later

Hello, I want to know if it's possible for exemple to save all the block than Player walked on during the last 5 minuts and then replace them by grass. Thank you

Replace them after :/ (So fast thank you ^^)

Are you here ? I found a way to do it : I array_push x, y and z and I count block and then foreach block counted : $t = 1; $y = 2; $u = 3; and I add 3to $t,$y and $u for each block (x =array[$u]...) but the problem is if I declare the number in the function which handle move, it will restore value when any player move. Sorry for my english, is there a way to make this working ?

Watch the memory usage if you store the whole block object.

I advise you to use a :memory: SQLite3 database in order to optimize efficiency.

(There won't be more than 50 block pos)

Although idk the exact usage of it lol

But there are multiple players.

Yes but it will be a small area and only some kind of blocks