(PHP 4 >= 4.0.4)
array_sum --
Calculate the sum of values in an array.
Description
mixed array_sum (array arr)
Array_sum() returns the sum of values
in an array as an integer or float.
Example 1. Array_sum() examples
$a = array(2,4,6,8);
echo "sum(a) = ".array_sum($a)."\n";
// prints: sum(a) = 20
$b = array("a"=>1.2,"b"=>2.3,"c"=>3.4);
echo "sum(b) = ".array_sum($b)."\n";
// prints: sum(b) = 6.9
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