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<?php $array = [ 503 => [ 'scores' => [ 4573 => ['answer' => 100], 4574 => ['answer' => 60], 4575 => ['answer' => 100], 4576 => ['answer' => 80], 4577 => ['answer' => 40], 4578 => ['answer' => 20], 4579 => ['answer' => 60], 4580 => ['answer' => 100], 4581 => ['answer' => 60], 4582 => ['answer' => 60], 4583 => ['answer' => 80], 4584 => ['answer' => 80], ], 'category' => 'Category A', 'grade' => 70, 'color' => NULL ], 504 => [ 'scores' => [ 4585 => ['answer' => 40], 4586 => ['answer' => 100], 4587 => ['answer' => 80], 4588 => ['answer' => 60], 4589 => ['answer' => 100], 4590 => ['answer' => 40], 4591 => ['answer' => 80], 4592 => ['answer' => 60], 4593 => ['answer' => 60], 4594 => ['answer' => 100], 4595 => ['answer' => 100], 4596 => ['answer' => 80], ], 'category' => 'Category B', 'grade' => 75, 'color' => NULL ], 505 => [ 'scores' => [ 4597 =>['answer' => 20], 4598 =>['answer' => 80], 4599 =>['answer' => 100], 4600 =>['answer' => 60], 4601 =>['answer' => 20], 4602 =>['answer' => 20], 4603 =>['answer' => 100], 4604 =>['answer' => 40], 4605 =>['answer' => 60], 4606 =>['answer' => 100], 4607 =>['answer' => 80], 4608 =>['answer' => 20], ], 'category' => 'Category C', 'grade' => 58.3, 'color' => NULL, ] ]; foreach ($array as ['scores' => &$scores]) { arsort($scores); } var_export($array);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 503 => array ( 'scores' => array ( 4573 => array ( 'answer' => 100, ), 4575 => array ( 'answer' => 100, ), 4580 => array ( 'answer' => 100, ), 4576 => array ( 'answer' => 80, ), 4583 => array ( 'answer' => 80, ), 4584 => array ( 'answer' => 80, ), 4574 => array ( 'answer' => 60, ), 4579 => array ( 'answer' => 60, ), 4581 => array ( 'answer' => 60, ), 4582 => array ( 'answer' => 60, ), 4577 => array ( 'answer' => 40, ), 4578 => array ( 'answer' => 20, ), ), 'category' => 'Category A', 'grade' => 70, 'color' => NULL, ), 504 => array ( 'scores' => array ( 4586 => array ( 'answer' => 100, ), 4589 => array ( 'answer' => 100, ), 4594 => array ( 'answer' => 100, ), 4595 => array ( 'answer' => 100, ), 4587 => array ( 'answer' => 80, ), 4591 => array ( 'answer' => 80, ), 4596 => array ( 'answer' => 80, ), 4588 => array ( 'answer' => 60, ), 4592 => array ( 'answer' => 60, ), 4593 => array ( 'answer' => 60, ), 4585 => array ( 'answer' => 40, ), 4590 => array ( 'answer' => 40, ), ), 'category' => 'Category B', 'grade' => 75, 'color' => NULL, ), 505 => array ( 'scores' => array ( 4599 => array ( 'answer' => 100, ), 4603 => array ( 'answer' => 100, ), 4606 => array ( 'answer' => 100, ), 4598 => array ( 'answer' => 80, ), 4607 => array ( 'answer' => 80, ), 4600 => array ( 'answer' => 60, ), 4605 => array ( 'answer' => 60, ), 4604 => array ( 'answer' => 40, ), 4597 => array ( 'answer' => 20, ), 4601 => array ( 'answer' => 20, ), 4602 => array ( 'answer' => 20, ), 4608 => array ( 'answer' => 20, ), ), 'category' => 'Category C', 'grade' => 58.3, 'color' => NULL, ), )
Output for 7.3.0
array ( 503 => array ( 'scores' => array ( 4573 => array ( 'answer' => 100, ), 4575 => array ( 'answer' => 100, ), 4580 => array ( 'answer' => 100, ), 4576 => array ( 'answer' => 80, ), 4583 => array ( 'answer' => 80, ), 4584 => array ( 'answer' => 80, ), 4574 => array ( 'answer' => 60, ), 4579 => array ( 'answer' => 60, ), 4581 => array ( 'answer' => 60, ), 4582 => array ( 'answer' => 60, ), 4577 => array ( 'answer' => 40, ), 4578 => array ( 'answer' => 20, ), ), 'category' => 'Category A', 'grade' => 70, 'color' => NULL, ), 504 => array ( 'scores' => array ( 4586 => array ( 'answer' => 100, ), 4589 => array ( 'answer' => 100, ), 4594 => array ( 'answer' => 100, ), 4595 => array ( 'answer' => 100, ), 4587 => array ( 'answer' => 80, ), 4591 => array ( 'answer' => 80, ), 4596 => array ( 'answer' => 80, ), 4588 => array ( 'answer' => 60, ), 4592 => array ( 'answer' => 60, ), 4593 => array ( 'answer' => 60, ), 4585 => array ( 'answer' => 40, ), 4590 => array ( 'answer' => 40, ), ), 'category' => 'Category B', 'grade' => 75, 'color' => NULL, ), 505 => array ( 'scores' => array ( 4603 => array ( 'answer' => 100, ), 4599 => array ( 'answer' => 100, ), 4606 => array ( 'answer' => 100, ), 4598 => array ( 'answer' => 80, ), 4607 => array ( 'answer' => 80, ), 4600 => array ( 'answer' => 60, ), 4605 => array ( 'answer' => 60, ), 4604 => array ( 'answer' => 40, ), 4597 => array ( 'answer' => 20, ), 4601 => array ( 'answer' => 20, ), 4602 => array ( 'answer' => 20, ), 4608 => array ( 'answer' => 20, ), ), 'category' => 'Category C', 'grade' => 58.3, 'color' => NULL, ), )
Output for 7.2.34
Fatal error: [] and list() assignments cannot be by reference in /in/CcHA0 on line 63
Process exited with code 255.

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