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array_sum

(PHP 4 >= 4.0.4, PHP 5)

array_sum — Calculate the sum of values in an array

Description

number array_sum ( array $array )

array_sum() returns the sum of values in an array as an integer or float.

Example#1 array_sum() examples

<?php
$a 
= array(2468);
echo 
"sum(a) = " array_sum($a) . "\n";

$b = array("a" => 1.2"b" => 2.3"c" => 3.4);
echo 
"sum(b) = " array_sum($b) . "\n";
?>

The above example will output:

sum(a) = 20
sum(b) = 6.9

Note: PHP versions prior to 4.2.1 modified the passed array itself and converted strings to numbers (which most of the time converted them to zero, depending on their value).