Online PHP editor | output for jduqg

<?php $array = [ 0 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PUSH", "chs_name" => "WF" ], 1 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PUSH", "chs_name" => "WFR" ], 2 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PUSH", "chs_name" => "STK Food" ], 3 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PULL", "chs_name" => "4 Stars" ], 4 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PULL", "chs_name" => "5 Stars" ], 5 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PULL", "chs_name" => "Modern Thai" ], 6 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PULL", "chs_name" => "BBQ Buffet" ], 7 => [ "product_code" => "67021687", "product_name" => "Spaces", "cha_sty_id" => "PULL", "chs_name" => "Chinese" ] ]; $res = []; array_walk($array, function($v, $k) use (&$res){ if(in_array($v['product_code'], array_column($res, 'product_code'))){ array_push($res[$v['product_code']]["push"], $v['chs_name']); array_push($res[$v['product_code']]["pull"], $v['chs_name']); }else{ $res[$v['product_code']] = [ "product_code" => $v['product_code'], "product_name" => $v['product_name'], "push" => [$v['chs_name']], "pull" => [$v['chs_name']] ]; } }); echo '<pre>'; print_r(array_values($res));