How to sent commands from console

Hello, how sent command from console if player use any item (I know how make it), for example:
Player eat stake and command from console /effect $player 1 10
Else how set effect to player?

If you want to run the command from the console run it without a '/' like "effect (Player Name) 1 10"

This us the plugin development forum... -_-#

Avoid running commands. Try to use the API instead.
https://github.com/PocketMine/PocketMine-MP/blob/master/src/pocketmine/entity/Entity.php#L298

I didn't knew how it use...
I beginer in PM plugins...

$player->addEffect(Effect::getEffect(Effect::SPEED));

SPEED can be replaced by the constant names here https://github.com/PocketMine/PocketMine-MP/blob/master/src/pocketmine/entity/Effect.php#L31-55

Thanks a lot again

How set it for time?
$player->addEffect(Effect::getEffect(Effect::SPEED), timeinseconds?);

$player->addEffect(Effect::getEffect(Effect::SPEED)->setDuration($ticks)) maybe. That's what I think should be correct so far.