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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 git.master, git.master_jit, rfc.property-hooks: 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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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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