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<?php class Canary extends stdClass { public function __construct(public string $name) { } function __destruct() { echo $this->name."\n"; } } $canary = new Canary('canary'); $map = new \WeakMap(); $map[$canary] = 'foo'; echo 1; unset($canary); echo 2;
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1canary 2

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99.12 ms | 402 KiB | 89 Q