Online PHP editor | vld for i2GXj

<?php $foo = [ "_1444734871078_78" => [ ["attribute" => "enabled", "value" => "1"], ["attribute" => "animal_skin", "value" => ""], ["attribute" => "brand", "value" => ""], ["attribute" => "care", "value" => ""], ["attribute" => "collection", "value" => ""], ["attribute" => "color", "value" => ""], ["attribute" => "commodity_code", "value" => ""], ["attribute" => "description", "value" => ""], ["attribute" => "fashion", "value" => ""], ["attribute" => "fit", "value" => ""], ["attribute" => "gender", "value" => ""], ["attribute" => "heel_height", "value" => ""], ["attribute" => "heel_type", "value" => ""], ["attribute" => "lining", "value" => ""], ["attribute" => "material", "value" => ""], ["attribute" => "name", "value" => ""], ["attribute" => "original_season_code", "value" => ""], ["attribute" => "product_type", "value" => ""], ["attribute" => "season_code", "value" => ""], ["attribute" => "shape", "value" => ""], ["attribute" => "skutype", "value" => ""], ["attribute" => "sole", "value" => ""], ["attribute" => "stamp", "value" => ""], ["attribute" => "style", "value" => ""], ["attribute" => "sub_category", "value" => ""], ["attribute" => "web_category_1", "value" => ""], ["attribute" => "web_category_2", "value" => ""], ["attribute" => "web_category_3", "value" => ""], ["attribute" => "web_category_4", "value" => ""], ["attribute" => "web_exclusive", "value" => ""], ["attribute" => "web_exclusive", "value" => ""], ["attribute" => "family", "value" => ""], ["attribute" => "back_in_stock", "value" => ""], ["attribute" => "bag_depth", "value" => ""], ["attribute" => "bag_height", "value" => ""], ["attribute" => "bag_strap_drop", "value" => ""], ["attribute" => "bag_width", "value" => ""], ["attribute" => "best_seller", "value" => ""], ["attribute" => "colour_group", "value" => ""], ["attribute" => "insock", "value" => ""], ["attribute" => "last", "value" => ""], ["attribute" => "limited_edition", "value" => ""], ["attribute" => "line", "value" => ""], ["attribute" => "made_in_britain", "value" => ""], ["attribute" => "made_in_italy", "value" => ""], ["attribute" => "new_season_offers", "value" => ""], ["attribute" => "newin", "value" => ""], ["attribute" => "offer", "value" => ""], ["attribute" => "preorders", "value" => ""], ["attribute" => "rand", "value" => ""], ["attribute" => "sale", "value" => ""], ["attribute" => "short_description", "value" => ""], ["attribute" => "sole_edge", "value" => ""], ["attribute" => "trim", "value" => ""], ["attribute" => "visible", "value" => ""], ["attribute" => "related_fit", "value" => ""], ["attribute" => "url_key", "value" => ""], ["attribute" => "colour_group", "value" => ""], ] ]; var_dump(serialize($foo));