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<?php class C { public function __destruct() { echo 'destructed', PHP_EOL; } } $x = new C(); $fn = fn ($a, $b) => (($x = $a ** 2) + ($y = $b ** 2)) * ($x - $y); echo '- unsetting $x', PHP_EOL; unset($x); echo '- calling $fn', PHP_EOL; var_dump($fn(3, 2)); echo '- unsetting $fn', PHP_EOL; unset($fn); echo '- DONE.', PHP_EOL;
Output for 8.1.7 - 8.1.33, 8.2.10 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
- unsetting $x - calling $fn int(65) - unsetting $fn destructed - DONE.
preferences:
77.27 ms | 406 KiB | 5 Q