Online PHP editor | rfc for lOrNb

@ 2023-11-06T06:54:01Z

<?php

$doc = new DOMDocument();
$doc->loadXML(
    <<<XML
    <container xmlns="http://symfony.com/schema/dic/services">
      CHILDREN
    </container>
    XML
);

//
// Remove xmlns Attribute + Validate it is actually gone.
// As you can see, it still remembers a 'xmlns' DOMNameSpaceNode with an empty namespaceURI (which basically is invalid!)
//
$doc->documentElement->removeAttributeNS('http://symfony.com/schema/dic/services', '');
var_dump($doc->documentElement->getAttributeNode('xmlns'));
$namespaces = [...(new DOMXPath($doc))->query('./namespace::*', $doc->documentElement)];

//
// Yet when saving the XML : there is no problem, the namespaces are gone.
//
echo $doc->saveXML();
var_dump($namespaces);


//
// However ...
// When importing the node in a new document, it gets prefixed by <default:container ...> without any xmlns:default declaration
//

$new = new DOMDocument();
$new->append(
    $new->importNode($doc->documentElement, true)
);

echo $new->saveXML();

// Resulting in invalid XML obviously:
$previousErrorReporting = libxml_use_internal_errors(true);
libxml_clear_errors();

$parsedAgain = new DOMDocument();
$parsedAgain->loadXML($new->saveXML());
$errors = libxml_get_errors();

libxml_clear_errors();
libxml_use_internal_errors($previousErrorReporting);

var_dump($errors);

Output for git.master, git.master_jit, rfc.property-hooks: bool(false) <?xml version="1.0"?> <container> CHILDREN </container> array(1) { [0]=> object(DOMNameSpaceNode)#4 (10) { ["nodeName"]=> string(9) "xmlns:xml" ["nodeValue"]=> string(36) "http://www.w3.org/XML/1998/namespace" ["nodeType"]=> int(18) ["prefix"]=> string(3) "xml" ["localName"]=> string(3) "xml" ["namespaceURI"]=> string(36) "http://www.w3.org/XML/1998/namespace" ["isConnected"]=> bool(true) ["ownerDocument"]=> string(22) "(object value omitted)" ["parentNode"]=> string(22) "(object value omitted)" ["parentElement"]=> string(22) "(object value omitted)" } } <?xml version="1.0"?> <container> CHILDREN </container> array(0) { }

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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