PHP Manual: Calculate the product of values in an array

number array_product ( array $array )

array_product returns the product of values in an array.

Returns the product as an integer or float.

Version	Description
5.3.6	The product of an empty array is now 1, when before this function would return 0 for an empty array.

Example #1 array_product examples


<?php

$a = array(2, 4, 6, 8);
echo "product(a) = " . array_product($a) . "\n";
echo "product(array()) = " . array_product(array()) . "\n";

?>

The above example will output:

product(a) = 384
product(array()) = 1