Introduction to the usage of PHP array_sum() function

In PHP, array is a very commonly used data structure, and it is often necessary to sum the elements in the array. In this case, the PHP array_sum() function becomes a very important tool. This article will introduce the usage of PHP array_sum() function in detail.

1. Function Overview

array_sum() function is used to calculate the sum of all elements in an array. The syntax is as follows:

array_sum(array $array): float|int

Parameter description:

• $array: required. The array to calculate the sum of.

Return value: The sum of all elements in the array. If the array elements are all integers, an integer value is returned, and if more than one element is a float, a float value is returned.

2. Example Demonstration

The following is a simple example that demonstrates how to use the array_sum() function to calculate the sum of array elements:

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

Output results For:

数组元素总和为：15

3. Note

• If there are no elements in the array, the return value of the function is 0.
• If there are non-numeric elements in the array, they will be ignored and the function only calculates elements of numeric type.

4. Summary

This article introduces the usage of array_sum() function in PHP, as well as example demonstrations and precautions. I believe that readers have initially mastered this function. It can be used flexibly in actual development.

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