PHP XPath: How to get element content?
I need some PHP/Xpath help. Can anyone give me sample code to follow?
The following is a snippet of XML from Amazon Web Service pertaining to the categories of a book (in this case, the book falls under 2 categories). I've tried walking this tree to get the information I need in the format I want, but was not having much success (was using SimpleXMLElement).
The result I need is a nested, associative array that looks like this:
[0]
- '11079' => 'Politics'
- '53' => 'Nonfiction'
- '1000' => 'Subjects'
- '283155' => 'Books'
[1]
- '11232' => 'Social Sciences'
- '53' => 'Nonfiction'
- '1000' => 'Subjects'
- '283155' => 'Books'
Here's the XML:
<BrowseNodes>
<BrowseNode>
<BrowseNodeId>110开发者_如何学C79</BrowseNodeId>
<Name>Politics</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>53</BrowseNodeId>
<Name>Nonfiction</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>1000</BrowseNodeId>
<Name>Subjects</Name>
<IsCategoryRoot>1</IsCategoryRoot>
<Ancestors>
<BrowseNode>
<BrowseNodeId>283155</BrowseNodeId>
<Name>Books</Name>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
<BrowseNode>
<BrowseNodeId>11232</BrowseNodeId>
<Name>Social Sciences</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>53</BrowseNodeId>
<Name>Nonfiction</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>1000</BrowseNodeId>
<Name>Subjects</Name>
<IsCategoryRoot>1</IsCategoryRoot>
<Ancestors>
<BrowseNode>
<BrowseNodeId>283155</BrowseNodeId>
<Name>Books</Name>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
</BrowseNodes>
You can do it the hard way.
You can see the result here.
<?
$xml = '<BrowseNodes>
<BrowseNode>
<BrowseNodeId>11079</BrowseNodeId>
<Name>Politics</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>53</BrowseNodeId>
<Name>Nonfiction</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>1000</BrowseNodeId>
<Name>Subjects</Name>
<IsCategoryRoot>1</IsCategoryRoot>
<Ancestors>
<BrowseNode>
<BrowseNodeId>283155</BrowseNodeId>
<Name>Books</Name>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
<BrowseNode>
<BrowseNodeId>11232</BrowseNodeId>
<Name>Social Sciences</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>53</BrowseNodeId>
<Name>Nonfiction</Name>
<Ancestors>
<BrowseNode>
<BrowseNodeId>1000</BrowseNodeId>
<Name>Subjects</Name>
<IsCategoryRoot>1</IsCategoryRoot>
<Ancestors>
<BrowseNode>
<BrowseNodeId>283155</BrowseNodeId>
<Name>Books</Name>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
</Ancestors>
</BrowseNode>
</BrowseNodes>';
$simplexml = simplexml_load_string($xml);
$return = array();
foreach($simplexml->BrowseNode as $node){
$return[] = array(
(string)$node->BrowseNodeId => (string)$node->Name,
(string)$node->Ancestors->BrowseNode->BrowseNodeId => (string)$node->Ancestors->BrowseNode->Name,
(string)$node->Ancestors->BrowseNode->Ancestors->BrowseNode->BrowseNodeId => (string)$node->Ancestors->BrowseNode->Ancestors->BrowseNode->Name,
(string)$node->Ancestors->BrowseNode->Ancestors->BrowseNode->Ancestors->BrowseNode->BrowseNodeId => (string)$node->Ancestors->BrowseNode->Ancestors->BrowseNode->Ancestors->BrowseNode->Name,
);
}
print_r($return);
Figured it out:
$categories = array();
$categories_count = count($simple_xml_emlement->xpath('//BrowseNodes/BrowseNode'));
for($i = 1; $i <= $categories_count; $i++)
{
$category = array();
$category_names = $simple_xml_emlement->xpath("//BrowseNodes/BrowseNode[$i]//Name");
foreach($category_names as $category_name)
{
$category_id = $category_name->xpath('preceding-sibling::*');
$category[(int)$category_id[0]] = (string) $category_name;
}
$categories[] = $category;
}
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