Command Interval?

I was wondering in php is there a way to have a timed command! Where you lets say you run /kit starter you can set a cool down so it can't be ran for 24 Hours!

PHP:

for ($i = *start time*; $i = *end time*; $i += *time interval*) {
    echo $i;
}


Maybe something like this? I meam I have no idea , so any help would help lol!

You have to use something like this (it's not a beautiful but works) (does not work if you reboot)

PHP:

<?php

namespace Server;



use pocketmine\command\Command;
use pocketmine\command\CommandSender;
use pocketmine\event\Listener;
use pocketmine\plugin\PluginBase;
use pocketmine\utils\TextFormat;

class Main extends PluginBase implements Listener{

    public  $kitTick = [];

    public function onLoad(){
        $this->getLogger()->info(TextFormat::WHITE . "Server plugin loaded");
    }



    public function onEnable()
    {
   
    }

    public function onCommand(CommandSender $sender, Command $command, $label, array $args){
        switch ($command){
            case "blabla":
                if(!isset($this->kitTick[$sender->getName()]) or ($this->kitTick[$sender->getName()] - $this->getServer()->getTick()) >= 20*60*60*24){
                     $this->kitTick[$sender->getName()] = $this->getServer()->getTick();
                    //WhatCOmmandHasToDO
                }else{
                    $sender->sendMessage("You can't use this command. You have to wait ".($this->kitTick[$sender->getName()] - $this->getServer()->getTick())/(20*60)." minutes.");
               
               
               break;

                }
           
        }
   
   
    }


}

Just save the time of when the command was last ran somewhere and check if the current time has a difference of lets say more than a day (86400 seconds).

Use time() >.< and save it in a database, or what you guys like, config files.

Lol. What you guys like. We like MySQL. But no need for it.

A database can also refer to a well planned custom implemented database, like the YAML files in SimpleAuth; it's still a database. But I won't call one simple YAML file a database. (SQLite3 is an exception)

I though databases had to be like MySQL before. I found out SQLite was a database too!