WhenKilled ? Timed Bans?

I was going to go for a plugin that bans you for a certain amout of time depending on how many times you get killed! Using an array for the times.

PHP:

public function onPlayerDeath(PlayerDeathEvent $event){
          $p = $event->getEntity();
          $m = $event->getDeathMessage();
            $p->kick($m);


I wanted to have an array like

PHP:

$time = array("30","180","1800","7200");


Doing something like ...

PHP:

$p->ban("Banned for" . $time[0] ."Seconds");


Some how count the time and pardon the player? Code example needed!

If it is an integer, express it as an integer. Why add quotes?

Im nof great with plugins! Thats why I asked for example code... Im open for suggestions

._.