$data_trouble = [];
foreach($dat_nick as $prod) {
    foreach($products as $product) {
        if ($product['p_name'] === $prod['name']) {
            $data_trouble[] = [
            	'name'  => $product['p_name'], 
            	'type'  => $prod['type'], 
            	'nick'  => $prod['nick'], 
            	'price' => $product['p_old_price']
            ];
        }
    }
}