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Asked: 2026-05-16T06:28:10+00:00

I have some strings that are valid in my database but when I include

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I have some strings that are valid in my database but when I include them in an attribute of a UTF-8 XML output they give me the following error:

XML Parsing Error: not well-formed

My current code (simplified):

header('Content-Type: text/xml'); 
echo '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>';
echo '<root attribute="' . htmlentities($string_from_hell) . '">';

How should I format these strings before including them in XML attributes?

A possible value for $string_from_hell: î„œ (don’t know if it will show up properly)

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1 Answer

  1. Editorial Team

    Try

    htmlspecialchars($string_from_hell, ENT_QUOTES, "UTF-8")

    htmlentities won’t do because it will create HTML entities that are not recognized in XML, only HTML. You should also specify the charset because the default is not UTF-8, it’s the ISO-8859-1.

    You’re also missing the quotes (") around the attribute value.

    There are also better ways to create XML files that handle escaping for you. See e.g. XMLWriter.

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