Using dot in php namespace

Any cons to using a dot in php namespaces?
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Dave BaldwinFixer of ProblemsCommented:
You can try it but this page says that it is not acceptable in variable names.  I suspect the same rules apply to 'namespaces' since they are user names.

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Ray PaseurCommented:
You have a lot of reading to do!  Start here and follow the links:

A dot in a namespace declaration will cause a PHP parse error.  Fortunately this cannot cause a run-time error unless your script is trying something really weird like a dynamically generated namespace.

FWIW, if you're not using namespaces in your scripts yet, drop everything and go refactor.  You can thank me later!
SAbboushiAuthor Commented:
Thanks Ray - I already read that.  The only reference I saw was a user post saying [don't use dot in namespace] but no explanation why.  Did I miss something?

I didn't have a chance to try yet, but your experience with Dave's certainly is enough to dissuade me!  Thanks-
Ray PaseurCommented:
It's a parse error -- you don't even have to try ;-)  PHP won't let you try!

Thanks for the points and thanks for using E-E, ~Ray
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