What is the usage of the php array_sum function?

The array_sum() function is used to calculate the total sum of all elements in an array and returns that sum value. Here is the basic usage of the array_sum() function:

$array = [1, 2, 3, 4, 5];
$total = array_sum($array);
echo $total; // 输出 15 (1 + 2 + 3 + 4 + 5)

In the example above, array_sum($array) will add up all the elements in the array [1, 2, 3, 4, 5] and return the total value of 15.

It is important to note that array_sum() can only be used with arrays that contain numerical values, and if the array contains non-numeric elements, they will be treated as 0 for the calculation.