Description:
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There is a regression in PHP5.5RC where empty text nodes seem to be lost e.g. <script src=""></script> is turned into <script src=""/>

This breaks XHTML pages because browsers don't recognise the self-closing syntax.

In PHP 5.3 and 5.4 the two calls below had different output

$doc->createElement('script') output <script/>
$doc->createElement('script', '') output <script></script>

In PHP5.5, they both output <script/> only. Documents parsed using loadXML suffer this too - <script></script> loses the inner text node and is transformed into <script/>.

Test script:
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<?php
error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', 1);

$doc = new DOMDocument;
$script = $doc->createElement('script', '');
$script->setAttribute('src', 'foo.js');
$doc->appendChild($script);
echo $doc->saveXML();

$doc->loadXML('<script src="abc.js"></script>');
echo $doc->saveXML();

Expected result:
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<?xml version="1.0"?>
<script src="foo.js"></script>
<?xml version="1.0"?>
<script src="foo.js"></script>

Actual result:
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<?xml version="1.0"?>
<script src="foo.js"/>
<?xml version="1.0"?>
<script src="foo.js"/>