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<?php class A extends \stdClass { public int $i = 42; } $holder = []; for ($i = 0; $i < 10000; $i++) { $holder[] = new A; } var_dump(memory_get_usage()); foreach ($holder as $obj) { } var_dump(memory_get_usage()); $unserialized_holder = []; foreach ($holder as $obj) { $unserialized_holder[] = \unserialize(\serialize($obj)); } unset($holder); var_dump(memory_get_usage());
Output for git.master
int(1338176) int(1338208) int(5229336)
Output for git.master_jit
int(1297824) int(1297856) int(5188984)
Output for rfc.property-hooks
int(1338144) int(1338176) int(5229304)

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