How to Sum the Values of a Specific Column in a Two-Dimensional Array in PHP?

Summing Values in a Two-Dimensional Array

You have a multidimensional array and need to sum the values in a specific column without using a foreach loop. In PHP 5.5 , you can achieve this efficiently using the array_column and array_sum functions:

array_column($arr, 'f_count')

This extracts the f_count values from the array into a one-dimensional array, preserving their original order. You can then apply:

array_sum($columnArray)

where $columnArray is the array returned by array_column, to sum the extracted f_count values.

For your sample array, this would give you the result:

$value = array_sum(array_column($arr, 'f_count'));
echo $value; // Outputs 7

Note that in earlier PHP versions, you can use a custom function to achieve the same result:

function get_column($array, $column) {
    return array_map(function ($element) use ($column) {
        return $element[$column];
    }, $array);
}

$columnArray = get_column($arr, 'f_count');
$value = array_sum($columnArray);

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