Master PHP’s array_sum(): Quick Guide to Summing Arrays

Function Overview

The array_sum() function calculates the total of all elements in an array.

array_sum(array $array): float|int

Parameter Description

$array

: required, the array whose elements are to be summed.

Return Value

Returns the sum of the array elements. If every element is an integer, an integer is returned; if any element is a float, a float is returned.

Example Demonstration

Below is a simple example showing how to use array_sum() to calculate the sum of an array.

<?php
$nums = array(1, 2, 3, 4, 5);
$total = array_sum($nums);
echo "数组元素总和为：" . $total;
?>

Output

数组元素总和为：15

Precautions

If the array contains no elements, the function returns 0.

Non‑numeric elements are ignored; only numeric values are summed.

Conclusion

The article introduced the PHP array_sum() function, its syntax, parameters, return values, a practical example, and important usage notes, enabling readers to apply it confidently in development.