Online PHP editor | refs for fQKqj

<?php $arr1 = Array( 0 => Array ( "day" => "17-3-2018" ), 1 => Array ( "day" => "16-3-2018" ), 2 => Array ( "day" => "15-3-2018" ), 3 => Array ( "day" => "14-3-2018" ) ); $arr2 = Array ( 0 => array ( "day" => "15-3-2018", "count" => 2 ), 1 => array ( "day" => "17-3-2018", "count" => 1 ) ); $day= array_column($arr1, "day"); Foreach($arr2 as $val){ $find = array_search($val['day'], $day); If($find !== false) $arr1[$find]['count'] = $val['count']; } Var_dump($arr1);