How to save time played on server?

Title Says it all!

Try:

PHP:

<?php
 namespace TeamCounter;

use pocketmine\event\Listener;
use pocketmine\event\player\PlayerJoinEvent;
use pocketmine\event\player\PlayerQuitEvent;
use pocketmine\utils\Config;
use pocketmine\utils\TextFormat;
use pocketmine\plugin\PluginBase;

class Main extends PluginBase implements Listener{
public function onEnable(){
$this->getServer()->getPluginManager()->registerEvents($this, $this);
$this->saveDefaultConfig;
$this->time = new Config($this->getDataFolder() . "time.yml", Config::YAML);
//sorry if config is wrong, rewrite it ;)
}
public function onJoin(PlayerJoinEvent $ev){
//1 is number of seconds to check
$this->getServer()->getScheduler()->scheduleRepeatingTask($t = new TimeTask($this, $ev->getPlayer()), 60*20);
$this->time->set($ev->getPlayer() . "-task" . $task->getId());
$this->time->set($ev->getPlayer() . "0");
$this->time->save();
}
public function onQuit(PlayerQuitEvent $ev){
$this->getServer()->getScheduler()->cancelTask($this->time>get($ev->getPlayer() . "-task"));
}
public function writeTime($time){
$this->time->set($ev->getPlayer(), $time);
}
}


TimeTask.php

PHP:

<?php
 namespace TeamCounter;

use pocketmine\scheduler\PluginTask;

class TimeTask extends PluginTask{

public function _construct($main, $p){
$this->main = $main;
$this->p = $p;
}
public function onRun($t){
$main->writeTime($main->time->get($p)+1);
}
}


It is meaningless to count the seconds every 20 ticks. Just save the Player join time in an array property with microtime(true) and microtime(true) - $this->joinTime[$player->getId()] when the Player quits or when plugin is disabled.

Yes, it's better. I'm writing my own ideas to 1) Practice coding 2) Learn how do it better

Will this cause lag since it update so much?

what is save time? count how long a player played on your server?

Take a look at how I do it in LegionPE.

https://github.com/PEMapModder/LegionPE-Theta-Base/blob/master/src/legionpe/theta/Session.php#L145
https://github.com/PEMapModder/LegionPE-Theta-Base/blob/master/src/legionpe/theta/Session.php#L816

Note that I am in a context where $this represents only one player. If you don't create an object per player, you need to use an array instead.