<?php $array = [ ['2', 163], ['5', 9] ]; $from = 1; $till = 18; $days = array_column($array, 0); $result = array_map(function($day) use ($array, $days) { return (false!==$key=array_search($day, $days))? $array[$key]: [$day, 0]; },range($from, $till)); var_dump($result);
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