[TYPO3-core] RFC #11430: Use $_SERVER['REQUEST_TIME'] instead of time() where it makes sense

[Niels Pardon]

REMINDER #4

Niels Pardon schrieb:
> This is an SVN patch request.
> 
> Type: New feature/Code cleanup
> 
> Bugtracker references:
> http://bugs.typo3.org/view.php?id=11430
> 
> Branches:
> trunk
> 
> Problem:
> There are a lot calls to time() spread all over the core. According to
> [1] calls to time() are expensive and should be avoided if possible. [1]
> suggests to use $_SERVER['REQUEST_TIME'] instead.
> 
> Solution:
> Use $_SERVER['REQUEST_TIME'] in config_default.php to set
> $GLOBALS['EXEC_TIME'] and use $GLOBALS['SIM_EXEC_TIME'] in the other
> places in the core.
> 
> Notes:
> I left out 3rd party libraries like OpenID or AdoDB.
> 
> [1] http://ilia.ws/files/phptek2007_performance.pdf
> 
>