[TYPO3-core] RFC #9285: Remove all @ in front of file_exists() calls

[Dmitry Dulepov [typo3]]

Hi!

Dmitry Dulepov [typo3] wrote:
> As you can see from the graph, using @ actually is faster. I was able to 
> reproduce this result 100%: a small 3% increase in speed when using @.

And identical result for ini_set: small performance increase when using @ (see attachments).

-- 
Dmitry Dulepov
TYPO3 Core team
My TYPO3 book: http://www.packtpub.com/typo3-extension-development/book
In the blog: http://typo3bloke.net/pages/book-reviews/presentation-zen-by-garr-reynolds/
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