html - PHP adds "<head/>" to any xml output -


not sure whats going on here code:

$template = '   <?xml version="1.0" encoding="utf-8" standalone="yes"?>   <categories>     <category>     </category>   </categories>'; echo $template;

but comes out on web browser

<?xml version="1.0" encoding="utf-8" standalone="yes"?> <head/><categories>   <category>   </category> </categories>

and when change code slightly

<?xml version="1.0" encoding="utf-8" standalone="yes"?> categories>   <head/><category>   </category> </categories>

notice removed "<" , head attached next "<". on earth going on here? know is?

are setting content type header before outputting content in browser? if not, browser default text/html , add header tag (not sure though). 

header("content-type: text/xml");

and if browser not adding tag, make sure don't output else xml in response, maybe echoing content after html tag , header has no closing tag (worth check).

remember headers must go before other content, otherwise error.


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