从xml文件访问数据

I want to perform an if check on an XML file I have loaded in using simplexml_load_file.

我想使用simplexml_load_file对我加载的XML文件执行if检查。

I have accessed the data when the output is as I want it to be, although as it's web services sometimes they may be a response which I need to cater for. The below is the XML I want to be able to check on:

当输出是我想要的时候，我已经访问了数据，虽然因为它的Web服务有时它们可能是我需要满足的响应。以下是我希望能够检查的XML：

<?xml version="1.0" encoding="utf-8"?>
<ProductSizes />

Can somebody help me out? I am using the below:

有人可以帮帮我吗？我使用以下：

$xmlstock = simplexml_load_file($xmlfeed);

1 个解决方案

#1

Assuming that the xml source looks something like the following when actually populated:

假设xml源在实际填充时看起来类似于以下内容：

<?xml version="1.0" encoding="utf-8"?>
<ProductSizes>
    <ProductSize />
    <ProductSize />
    <ProductSize />
</ProductSizes>

You can get a count using the count() api call:

您可以使用count（）api调用获取计数：

$xmlstock = simplexml_load_file($xmlfeed);

$hasProductSizes = ($xmlstock->ProductSize->count() > 0) ? true : false;

More info on the count() API via PHP docs.

有关通过PHP文档的count（）API的更多信息。

#1