Online PHP editor | output for nLrXZ

<?php $products = [ (object)["item_id" => "89", "name" => "Confiture de Myrtilles", "product_id" => "737", "meta_key" => "vmm_warehouse_sg_10783", "meta_value" => "0" ], (object)["item_id" => "89", "name" => "Confiture de Myrtilles", "product_id" => "737", "meta_key" => "vmm_warehouse_sg_10782", "meta_value" => "0" ], (object)["item_id" => "91", "name" => "Poires Guyot (bio)", "product_id" => "690", "meta_key" => "_backorders", "meta_value" => "no" ], (object)["item_id" => "91", "name" => "Poires Guyot (bio)", "product_id" => "690", "meta_key" => "_sold_individually", "meta_value" => "no" ] ]; $result = []; foreach($products as $product) { $result[$product->item_id][$product->meta_key] = $product->meta_value; } var_export($result);