Easy question about XML parsing

[Brian Dunning <brian@xxxxxxxxxxxxxxxx>]

I've been going through a number of easy XML parsing examples on the 
web, and they all have one thing in common: the XML is in a file, which 
they read in 4K chunks and parse.

My application will be retrieving the XML from a web service, 
presumably like $xml = file_get_contents($url). I was assuming that I 
could parse the XML in memory using that $xml variable, but since NONE 
of the examples I've seen do this, I was wondering if it's a 
requirement that the XML be in a local file, and needing to do the 4K 
chunk thing.

- Brian

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