[UPHPU] Using php to get page load time

[Wade Preston Shearer]

> Okay sweet. Can anybody tell me which version of microtime() goes  
> back to,
> i.e. is it valid in PHP 4?

On the top of each page in the PHP manual it tells you what versions  
supported that function:

http://screencast.com/t/duXY7MvyUF

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