PHP 8 reference · Array Functions

PHP array_sum() Function

Return the sum of the values in an array. Numeric strings are converted; an empty array gives 0.

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Syntax

array_sum(array $array): int|float

Parameter	Description
`array`	The input array.

The sum as an int or float.

Add up valuesTry it yourself

<?php
echo array_sum([1, 2, 3.5]), "\n";
echo array_sum([]), "\n";

Output

6.5
0

Sum a columnTry it yourself

<?php
$cart = [["price" => 3.5], ["price" => 12]];
echo array_sum(array_column($cart, "price")), "\n";

Output

15.5

Version	Change
PHP 4.0	Added
PHP 8.3	Warns about values that can't be added (such as arrays) instead of silently skipping them.

array_product() · Return the product of the values in an array, multiplying them all together. An empty array gives 1.
array_reduce() · Reduce an array to a single value by passing a running total and each element to a callback.
array_column() · Return the values from one column of a list of records, optionally keyed by another column.
PHP Array Functions · tutorial
PHP Arrays · tutorial