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<?php $dom = new DOMDocument(); $dom->loadXML( '<foobar><a:foo xmlns:a="urn:a">'. '<b:bar xmlns:b="urn:b"/></a:foo>'. '</foobar>' ); $xpath = new DOMXPath($dom); // disable automatic namespace registration //$xpath->enableRegisterNodeNS = FALSE; $context = $dom->documentElement->firstChild; $xpath->registerNamespace('a', 'urn:b'); var_dump( $xpath->evaluate( 'descendant-or-self::a:*', $context )->item(0)->tagName );

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