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@ 2022-02-22T04:56:02Z

<?php

$aData = Array
  (
    'break' => Array
        (
            'Indoor room' => 42,
            'Gym Class' => 19
        ),
    'finish' => Array
        (
            'Indoor room' => 42,
            'Gym Class' => 19
        ),

    'lunch' => Array
        (
            'Indoor room' => 7
        ),

    'period1' => Array
        (
            'Indoor room' => 12,
            'Gym Class' => 22
        ),

    'period2' => Array
        (
            'Gym Class' => 14,
            'Indoor room' => 25
        ),

    'period3' => Array
        (
            'Gym Class' => 21,
            'Indoor room' => 11
        ),

    'period4' => Array
        (
            'Gym Class' => 22,
            'Indoor room' => 20
        ),

    'period5' => Array
        (
            'Gym Class' => 16,
            'Indoor room' => 9
        )

);

$arraySort = [
  "break",  
  "period1", 
  "period2", 
  "period3", 
  "lunch",
  "period4",
  "period5", 
  "period6", 
  "finish" 
];

$final_array = [];

foreach($arraySort  as $arraySo){
  $final_array[$arraySo] = isset($aData[$arraySo]) ? $aData[$arraySo] : [];
}

print_r($final_array);

Output for 7.4.0 - 7.4.33, 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 ( [break] => Array ( [Indoor room] => 42 [Gym Class] => 19 ) [period1] => Array ( [Indoor room] => 12 [Gym Class] => 22 ) [period2] => Array ( [Gym Class] => 14 [Indoor room] => 25 ) [period3] => Array ( [Gym Class] => 21 [Indoor room] => 11 ) [lunch] => Array ( [Indoor room] => 7 ) [period4] => Array ( [Gym Class] => 22 [Indoor room] => 20 ) [period5] => Array ( [Gym Class] => 16 [Indoor room] => 9 ) [period6] => Array ( ) [finish] => Array ( [Indoor room] => 42 [Gym Class] => 19 ) )

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116.82 ms | 409 KiB | 5 Q