What is the difference between using count() and array_sum() functions in PHP for calculating sums?

The count() function in PHP is used to count the number of elements in an array, while the array_sum() function is used to calculate the sum of all the values in an array. Therefore, if you want to calculate the sum of values in an array, you should use the array_sum() function instead of count(). 

// Using array_sum() to calculate the sum of values in an array
$numbers = [1, 2, 3, 4, 5];
$sum = array_sum($numbers);
echo $sum; // Output: 15

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count array_sum functions PHP calculating sums

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