Online PHP editor | refs for N1jDd

<?php $array = [ [ 'num' => 1, 'name' => 'name 1', 'epg_channel_id' => 'ch111', 'added' => '1505435915', ], [ 'num' => 2, 'name' => 'name 2', 'epg_channel_id' => 'ch222', 'added' => '1505435915', ], [ 'num' => 3, 'name' => 'name 3', 'epg_channel_id' => 'ch333', 'added' => '1505435915', ], [ 'num' => 4, 'name' => 'name 4', 'epg_channel_id' => 'ch444', 'added' => '1505435915' ] ]; $array2 = [ ['ch000' => 'Um9jayBJbiBSaW8='], ['ch111' => 'Um9jayBJbiBSaW8='], ['ch222' => 'Um9jayBJbiBSaW8='], ['ch333' => 'Um9jayBJbiBSaW8='], ['ch444' => 'Um9jayBJbiBSaW8='] ]; $lookup = array_merge(...$array2); foreach ($array as &$row) { $row += [$row['epg_channel_id'] => $lookup[$row['epg_channel_id']]]; } var_export($array);