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<?php $o = new stdClass; $o->aaa = 1; $a = [$o]; var_dump((array)$a[0]);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { ["aaa"]=> int(1) }
preferences:
140.64 ms | 402 KiB | 121 Q