How to Sum Column Values in a Multidimensional Array Without Loops in PHP?

Sum Column Values in a Multidimensional Array Without Loops

When working with multidimensional arrays, calculating the sum of specific column values can be challenging. Consider the following array:

Array (
    [0] => Array ( [f_count] => 1 [uid] => 105 )
    [1] => Array ( [f_count] => 0 [uid] => 106 )
    [2] => Array ( [f_count] => 2 [uid] => 107 )
    [3] => Array ( [f_count] => 0 [uid] => 108 )
    [4] => Array ( [f_count] => 1 [uid] => 109 )
    [5] => Array ( [f_count] => 0 [uid] => 110 )
    [6] => Array ( [f_count] => 3 [uid] => 111 )
)

The desired output is the sum of the f_count values, which is 7.

Solution Without Loops

For PHP versions 5.5 and above, a concise solution is available using the array_column and array_sum functions:

$f_counts = array_column($array, 'f_count');
$sum = array_sum($f_counts);

This approach avoids the need for loops or complex data manipulation techniques.

Alternative Solution

If using a different version of PHP, or if you prefer, you can achieve column value summation using a more traditional approach:

$sum = 0;
foreach ($array as $row) {
    $sum += $row['f_count'];
}

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