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<?php $st = new stdClass(); $st->q = new stdClass(); $st->q->k = 1; $st->q->w = 2; $kl = $st->q; unset($kl->k); print_r($st); print_r($kl);
Output for git.master, git.master_jit, rfc.property-hooks
stdClass Object ( [q] => stdClass Object ( [w] => 2 ) ) stdClass Object ( [w] => 2 )

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