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@ 2014-10-28T18:51:42Z

<?php

$numbers = [1, 2, 3, 4, 5];

function x(array $numbers)
{
	$result = array();
	$previous_value = 0;

	foreach($numbers as $number) {
		$result[] = $previous_value + $number;
		$previous_value = $number;
	}
	
	return $result;
}

var_dump(x($numbers));