kml namespace breaks simplexml

[ianckc]

I have a kml file with lots of placemark tags in. The overall aim is
to extract each of these placemarks and create an individual kml file
for each one.

I am using php's simplexml and have come across a problem.

Everything works fine if I just use a plain kml tag like this

<kml>

but if iadd the namespace in like this

<kml xmlns="http://earth.google.com/kml/2.2">

it stops the script from working.

I don't get any error message just a blank screen.

Does anyone have any ideas on what the problem could be?

Thnaks

[nicodemussunrise]

Could you upload a sample file?

-ns