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chris AT cmbuckley DOT co DOT uk ¶

14 years ago

To help with the problem where the default namespace is not registered with the DOMXPath object, you can use the following replacement to update your paths accordingly:



<?php



$xml = <<<EOS

<root xmlns="urn:test">

    <foo>bar</foo>

</root>

EOS;



$expression = '//foo';

$prefix = 'fakeprefix';



$doc = new DOMDocument();

$doc->loadXML($xml);



$context = $doc->documentElement; // or whichever element you choose

$xpath = new DOMXPath($doc);



// register namespace as below, and apply a regex to the expression

if (null !== $context->namespaceURI) {

    $xpath->registerNamespace($prefix, $context->namespaceURI);

    $expression = preg_replace('#(::|/\s*|\A)(?![/@].+?|[a-z\-]+::)#', '$1' . $prefix . ':$2', $expression);

    var_dump($expression); // string(16) "//fakeprefix:foo"

}



$foo = $xpath->query($expression, $context)->item(0);

var_dump($doc->saveXML($foo)); // string(14) "<foo>bar</foo>"



?>

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