Description:
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XMLWriter adds the defined indent between mixed child nodes. This will change the meaning if the text nodes do not contain leading/trailing whitespaces.

This does not happen if the indent is set to zero.



Test script:
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<?php
$_ = new XMLWriter();
$_->openMemory();
$_->setIndent(2);

$_->startDocument();
$_->startElement('p');
$_->text('before');
$_->writeElement('a', 'element');
$_->text('after');
$_->endElement();
$_->endDocument();

echo $_->outputMemory();

Expected result:
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<?xml version="1.0"?>
<p>before<a>element</a>after</p>

Actual result:
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<?xml version="1.0"?>
<p>before <a>element</a>
after</p>