How to add time for use to command

Hi how to do that command was in time?
For example, that a player can use it only once a day . I write a plugin for quests . I have already written three quests

Save the time() or the date() and check if either the saved time + 1 day is less than the current time() or whether the saved date() is not equal with the current one. If you use date(), of course, use the same format.

About date(), just using date("dmy") is good enough for your purpose.

and you supply me a model date () ?

That depends on how you save the players' data...

I use it to add time to command e.g server kits i can the command /kit (kit) only one per day?
Sorry for my englisch i use google translate

Can you post your code here?

Then you need to have data saving. As for how to do data saving, please search the forums.

And do not search with the search bar, it's s*** (sorry @Moderators, but its really useless)

Spoiler

[Search words are too short, too common, too long, did not find anything, i can't even search in the forums if you are in plugins, on the start site I'm bugging around,...]

Use "Google Hacking" Enter in google YOUR_SEARCH_WORD (for example config saving) and then site:forumspocketmine.net
So it would result into "config saving site:forums.pocketmine.net"