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Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.19, 8.4.1 - 8.4.6
array ( 0 => array ( 'id' => 1, 'parent' => 3, ), 1 => array ( 'id' => 5, 'parent' => 5, ), 2 => array ( 'id' => 7, 'parent' => 7, ), 3 => array ( 'id' => 2, 'parent' => 7, ), 4 => array ( 'id' => 4, 'parent' => 7, ), 5 => array ( 'id' => 18, 'parent' => 7, ), 6 => array ( 'id' => 12, 'parent' => 12, ), 7 => array ( 'id' => 10, 'parent' => 12, ), 8 => array ( 'id' => 15, 'parent' => 12, ), 9 => array ( 'id' => 17, 'parent' => 12, ), 10 => array ( 'id' => 15, 'parent' => 15, ), 11 => array ( 'id' => 13, 'parent' => 15, ), 12 => array ( 'id' => 21, 'parent' => 15, ), 13 => array ( 'id' => 25, 'parent' => 15, ), )

preferences:
69.83 ms | 413 KiB | 5 Q