Strange text when converting XML array to XML

Posted by danit on Stack Overflow See other posts from Stack Overflow or by danit
Published on 2010-03-31T18:20:44Z Indexed on 2010/03/31 18:23 UTC
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Im using the answer to this question to convert an array of XML to a single XML output:

http://stackoverflow.com/questions/2554671/output-array-of-xml-to-plain-xml

Im using the simpler solution of the two there (Marked as the answer)

It all works for me, however at the start of the output I get:

string(109960) "

Can anyone shed any light on this? Output here: http://bit.ly/aoA3qY

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