vdubyna · September 16, 2013 12:38
diff --git a/play-with-functions.php b/play-with-functions.php
 <?php 

 $array = array(4,3,2,1);

 function sum ($arr) {
    if (empty($arr)) {
        return 0;
    } else {
        return $arr[0] + sum(array_slice($arr, 1));
    }
 }
	<?php

	$array = array(4,3,2,1);

	function sum ($arr) {
	if (empty($arr)) {
	return 0;
	} else {
	return $arr[0] + sum(array_slice($arr, 1));
	}
	}
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