php on windows server 2003-quick question

I'm currently running PHP 5.3.6 on Windows 2003. Can I upgrade php or is that version the maximum I can use for Windows 2003?
Thanks,
avirAsked:
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Ray PaseurCommented:
You can upgrade, but only to PHP 5.4, IIRC.  Everything you need to know is here:
http://php.net/manual/en/install.windows.php

Important details here:
http://php.net/manual/en/install.windows.iis6.php#109934

Currently supported versions of PHP are listed near "Download" on the upper right of the home page:
http://php.net/
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MlandaTCommented:
PHP 5.4 series will be the last versions to support Windows XP and Windows 2003. We will not provide binary packages for these Windows versions anymore after PHP 5.4.
http://windows.php.net/
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avirAuthor Commented:
Thanks for the responses. In your opinion, if everything is running okay right now (various wordpress and codeigniter sites), is it worth upgrading to 5.4?
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Ray PaseurCommented:
Worth upgrading?  Yes, it is always worth upgrading to the latest software.  That is like changing your oil.  The car may keep running for a while on dirty oil, but eventually the old oil will damage the engine and the results will be much more sudden and costly than a scheduled oil change.  

PHP 5.3 is not supported any more, not even for security fixes.
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avirAuthor Commented:
Okay, thanks.
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