<?php $arr = [ 'water' => [0, 1, 2, 3, 4, 5], 'apple' => [1, 5, 3, 4, 0, 0], 'beer' => [0, 0, 0, 0, 0, 0] ]; $arrWeight = array_map(function($value) { return is_array($value) ? array_sum($value) : 0; }, $arr); arsort($arrWeight); $arrAllowedKeys = array_slice($arrWeight, 0, 2, true); $arr = array_intersect_key($arr, $arrAllowedKeys); var_export($arr);
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