<?php $array = [ [11 => 771725], [11 => 847226], [10 => 410035], [11 => 455387], ]; $result = array_fill_keys(range(1,12), 0); foreach ($array as $a) { $result[key($a)] += reset($a); } print_r($result);
You have javascript disabled. You will not be able to edit any code.