Online PHP editor | output for ADnGA

<?php class Sleep { protected ?int $pending = null; public function __construct(int $duration) { $this->pending = $duration; } public static function for(int $duration): static { return new static($duration); } public function one(): static { $this->pending = 100; return $this; } public function two(): static { $this->pending = 200; return $this; } public function __destruct() { if ($this->pending > 0) { echo 'Sleeping for ' . $this->pending . ' μseconds' . PHP_EOL; echo PHP_EOL; usleep($this->pending); } } } function check(bool $a) { $sleep = (new Sleep(2))->one(); if ($a) { $sleep->two(); } // author expecting two seconds or one minute to be slept before calling next line: echo 'CHECK:' . (new DateTime())->format(DateTimeInterface::ATOM); echo PHP_EOL; } echo 'OUTER_TIME: ' . (new DateTime())->format(DateTimeInterface::ATOM); echo PHP_EOL; check(false); echo 'OUTER_TIME: ' . (new DateTime())->format(DateTimeInterface::ATOM); echo PHP_EOL; check(true); echo 'OUTER_TIME: ' . (new DateTime())->format(DateTimeInterface::ATOM); echo PHP_EOL; // expected output: //OUTER_TIME: 2023-12-12T20:26:28+01:00 //Sleeping for 100 μseconds //CHECK:2023-12-12T20:26:28+01:00 // //OUTER_TIME: 2023-12-12T20:26:28+01:00 //Sleeping for 200 μseconds //CHECK:2023-12-12T20:26:28+01:00 // //OUTER_TIME: 2023-12-12T20:26:28+01:00