XPath query return multiple nodes on different levels

Question

PHP XPath query:

$query = $xpathvar->query('//siri:Service');
foreach($query as $service) {
    echo $service->textContent;
    // Here I need to also echo this Vehicle's reg
}

Targeted XML:

<Vehicle>
    <CategoryA>
        <Service>123123123</Service>
    </CategoryA>
    <CategoryB>
         <SubCategoryA>
             <Reg>ASDF_XC1</Reg>
         </SubCategoryA>
    </CategoryB>
</Vehicle>
// Imagine many more vehicles here each with a service and reg

How can I alter the PHP so that I also retrieve the Reg for each one as well? The Service and Reg have to be inside the same Vehicle when retrieved (not random pairs).

Your question is not really clear. According to the XML structure, the Reg should be part of `textContent` already. — hakre, Sep 29 '13 at 12:49

score 3 · Accepted Answer · edited May 23 '17 at 10:32

How about querying vehicle and then using it as context node to search for Service and Reg?

$vehicles = $xpath->query('//siri:Vehicle');
$pairs = array();
foreach ($vehicles as $vehicle) {
    $pairs[] = array(
        'Service' => $xpath->evaluate('string(.//siri:Service)', $vehicle),
        'Reg'     => $xpath->evaluate('string(.//siri:Reg)'    , $vehicle),
    );
}

See as well:

Combining two Xpaths into one loop?

XPath query return multiple nodes on different levels

1 Answers1

Linked