Php 无法在google adwords api中设置ProductBiddingCategory

我在应用程序中使用google adwords api（v 201705），当我想在库存过滤器中设置

ProductBiddingCategory

时，它不能正常工作。我有一个带有ID的配置。我使用Laravel5.4和PHP5.6。这是第一级：

'category1stLevel' => array(
        '-7183678771116356049' => 'Animals & Pet Supplies',
        '-8901225909846585574' => 'Arts & Entertainment ',
        '-135859741832737125' => 'Baby & Toddler',
        '1630781044279653237' => 'Business & Industrial',
        '-4047358871470385303' => 'Cameras & Optics',
        '-3692872870547437690' => 'Clothing & Accessories',
        '-8991081036712453473' => 'Electronics',
        '-4844290245982195030' => 'Food, Beverages & Tobacco',
        '5791209622805759532' => 'Furniture',
        '1689639310991627077' => 'Hardware',
        '-1319082945867661876' => 'Health & Beauty',
        '-730821788104646261' => 'Home & Garden',
        '-5914235892932915235' => 'Luggage & Bags',
        '513743549703189181' => 'Mature',
        '-823909673284230433' => 'Media',
        '7477391641924216366' => 'Office Supplies',
        '225849170806580462' => 'Religious & Ceremonial ',
        '-7974890371279108093' => 'Software',
        '6085370270382652056' => 'Sporting Goods',
        '-136928849880388598' => 'Toys & Games',
        '-7701278134223972650' => 'Vehicles & Parts'
    )

我是这样设置的：

$value = new ProductBiddingCategory();
$value->setType('BIDDING_CATEGORY_L1');
$value->setValue(-7183678771116356049);
$productScope->setDimensions([$value]);

php似乎正在将其转换为指数数（例如-7.18367877111636E+18），当它设置时，我收到错误“无效投标类别-718367877111635789…”，这意味着它不是从一开始的数字。如果我这样设置

$value->setValue（-7.18367877111636E+18）

它也不起作用

我应该如何设置它工作？请帮忙