How to encode data for showing xml in php?

Question

I am generating XML dynamically. There may be arbitrary data which is entered by users. Which characters do I have to encode in order to show them properly in the XML file?

I am using PHP.

<>'"& are the 'Big 5'. htmlspecialchars() will do this for you automatically. — Marc B
– Marc B, Commented Jul 21, 2011 at 19:01
You need ENT_QUOTES as well to encode the ''s. Otherwise it just encode's <>"& — Paul
– Paul, Commented Jul 21, 2011 at 19:03
htmlspecialchars('asfa<>sf') shows me asfa<>sf. No encoding. Any help? — Elbek
– Elbek, Commented Jul 21, 2011 at 19:05

Paul · Accepted Answer · 2011-07-21 19:03:21Z

2

htmlspecialchars($string, ENT_QUOTES);

answered Jul 21, 2011 at 19:03

Paul

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2 Comments

Elbek Over a year ago

echo htmlspecialchars("asfa<>sf", ENT_QUOTES); gived me asfa<>sf. Is it encoded?

Paul Over a year ago

@elbek htmlspecialchars encodes those characters so that they look the same as they were meant to in a browser, but don't function the same in XML or HTML. it encodes < as < for example, and a web browser renders < as < w ithout it having the meaning it does in XML

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