How to add values in multidimensional array

Question

I have a multidimentional array which stores values and I want to add the values of each element in the array and return an array of the total values.

I've created the following function which works, but it seems very bloated for it's purposes. Is there a simpler and cleaner way of doing the following?

function get_totals($metric_array){
    $totals['value1']=0;
    $totals['value2']=0;
    $totals['value3']=0;
    $totals['value4']=0;
    $totals['value5']=0;
    $totals['value6']=0;
    $totals['value7']=0;
    $totals['value8']=0;

    foreach ($metric_array as $metric){
        $totals['value1']=$totals['value1']+$metric['value1'];
        $totals['value2']=$totals['value2']+$metric['value2'];
        $totals['value3']=$totals['value3']+$metric['value3'];
        $totals['value4']=$totals['value4']+$metric['value4'];
        $totals['value5']=$totals['value5']+$metric['value5'];
        $totals['value6']=$totals['value6']+$metric['value6'];
        $totals['value7']=$totals['value7']+$metric['value7'];
        $totals['value8']=$totals['value8']+$metric['value8'];  
    }
    return $totals;
}

GolezTrol · Accepted Answer · 2015-10-20 05:49:15Z

2

You can construct the key value1, and make a for loop from 1 to 8. That'll save some code:

function get_totals($metric_array){
  for ($i = 1; $ <= 8; $i++) {
    $key = 'value' . $i;
    $totals[$key] = 0;
    foreach ($metric_array as $metric){
      $totals[$key] += $metric[$key];
    }
  }
  return $totals;
}

edited Oct 20, 2015 at 5:49

answered Oct 20, 2015 at 5:40

GolezTrol

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Comments

Dinesh Belkare · Accepted Answer · 2015-10-20 05:57:39Z

0

As I can see You are trying to return sum of columns.Your function can be optimized like this.

    function get_totals($metric_array){
        $totals = array();
        foreach ($metric_array as $metric){
            foreach ($metric as $key => $val){
                $totals[$key] += $val;
            }  
        }
        return $totals;
    }

answered Oct 20, 2015 at 5:57

Dinesh Belkare

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