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@ 2022-06-15T11:07:04Z

<?php

 $ar = array
    (
        'Services' => 
        array(
          array 
            (
                        '9' => '0',
                        '10' => '0',
                        '11' => '0',
                        '12' => '0',
                        '13' => '0',
                        '14' => '0',
                        '15' => '600'
                    
    
              ),
            ),
        'Financial' => array(
                 Array
                    (
                        '9' => 0,
                        '10' => 0,
                        '11' => 0,
                        '12' => 0,
                        '13' => 0,
                        '14' => 0,
                        '15' => 500
                    ),
    
                 Array
                    (
                        '9' => 0,
                        '10' => 0,
                        '11' => 0,
                        '12' => 0,
                        '13' => 0,
                        '14' => 0,
                        '15' => 200
                    ),
    
                
                 Array
                    (
                        '9' => 0,
                        '10' => 0,
                        '11' => 0,
                        '12' => 0,
                        '13' => 0,
                        '14' => 0,
                        '15' => 300
                    ),
                  ),
        'DFD' => array(
               Array
                    (
                        '9' => 0,
                        '10' => 0,
                        '11' => 0,
                        '12' => 0,
                        '13' => 0,
                        '14' => 0,
                        '15' => 1000,
                    ),
    
                 Array
                    (
                        '9' => 0,
                        '10' => 0,
                        '11' => 0,
                        '12' => 0,
                        '13' => 0,
                        '14' => 0,
                        '15' => 100
                    )
        )
    );
    
$finalArray = [];

foreach($ar as $key=>$val){
    
    $keyIndexes = array_keys($val[0]);
    foreach($keyIndexes as $keyIndex){
        $finalArray[$key][$keyIndex] = array_sum(array_column($val,$keyIndex));
    }
}

print_r($finalArray);

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 - 8.3.27, 8.4.1 - 8.4.14: Array ( [Services] => Array ( [9] => 0 [10] => 0 [11] => 0 [12] => 0 [13] => 0 [14] => 0 [15] => 600 ) [Financial] => Array ( [9] => 0 [10] => 0 [11] => 0 [12] => 0 [13] => 0 [14] => 0 [15] => 1000 ) [DFD] => Array ( [9] => 0 [10] => 0 [11] => 0 [12] => 0 [13] => 0 [14] => 0 [15] => 1100 ) )

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106.06 ms | 408 KiB | 5 Q