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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 git.master_jit, git.master, rfc.property-hooks
- unsetting $x - calling $fn int(65) - unsetting $fn destructed - DONE.

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