array_sum() returns the sum of values in an array as an integer or float.
<?php
$a = array(2, 4, 6, 8);
echo "sum(a) = ".array_sum($a)."\n";
$b = array("a"=>1.2,"b"=>2.3,"c"=>3.4);
echo "sum(b) = ".array_sum($b)."\n";
?>The printout of the program above will be:
sum(a) = 20
sum(b) = 6.9PHP 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).
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