Sum of Array Elements Using Recursion in PHP
Let's now not output the elements of the array to the screen, but find the sum of the elements of this array:
<?php
function getSum($arr) {
$sum = array_shift($arr);
if (count($arr) !== 0) {
$sum += getSum($arr);
}
return $sum;
}
var_dump(getSum([1, 2, 3]));
?>
Given an array:
<?php
$arr = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5];
?>
Using recursion, find the sum of the elements of this array.
