Question

我有一个带有特殊标签的xml rss我不知道如何阅读第二部分，在本例中是子类别

XML RSS：

<?xml version="1.0" encoding="UTF-8"?>

<channel>
    <category text="Category">
    <category text="Subcategory"/>
    </category>
</channel>

</rss>

PHP

//this gives the category
$category = $feed->channel->category->attributes(); 
echo $category . '<br>';

//I tried this but only gives category and I need subcategory too
foreach ($feed->channel->category->attributes() as $item) { 
    echo $item . '<br>';
}

Answer 1

那是因为你有两个元素，而不是两个属性;一个类别元素是另一个类别元素的嵌套元素

foreach ($feed->channel->category as $category) { 
    foreach($category->attributes() as $attribute) {
        echo $attribute . '<br>';
    }

    foreach ($category->category as $subcategory) { 
        foreach($subcategory->attributes() as $attribute) {
            echo $attribute . '<br>';
        }
    }
}

修改

如果您的代码段在语法上正确，和正确缩进
，则可能更容易理解
<?xml version="1.0" encoding="UTF-8"?> <rss> <channel> <category text="Category"> <category text="Subcategory"/> </category> </channel> </rss>

因此category元素可以包含“子”元素，也称为category

如何读取具有两个属性的标记

1 个答案: