Feature request: add max execution time

[Gemorroj]

Sometimes "BoxPacker" works for a very long time and we need to force it to stop and continue working with other code.
I would like to add some kind of countdown and throw an exception when a certain limit is reached.
Something like this:

$limitSeconds = 2;


$startTime = microtime(true);
while(true) { // packing process
    sleep(1);

    $currentTime = microtime(true);
    if ($currentTime - $limitSeconds > $startTime) {
        throw new \Exception('Time Limit Exception');
    }
}