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Re: Windows binaries 64bit for PHP [message #178240 is a reply to message #178239] Thu, 24 May 2012 10:00 Go to previous messageGo to previous message
Shake is currently offline  Shake
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Registered: May 2012
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El 24/05/2012 11:40, Stig Vestøl escribió:
>
> That was the point i was trying to make. If performance is an issue, let
> apache serve the images.
> The overhead of using PHP to check if an image exists before sending it
> on every request is huge.

There is no need to check every request.

Check the process:

Supose that the images are on the home of the image gallery:

GET /Index.php -> served by PHP (by Apache) *
GET /scaleY/image1.png -> served by Apache (or LIGHTTP) **
GET /scaleY/image2.png -> served by Apache (or LIGHTTP) **
GET /scaleY/image3.png -> served by Apache (or LIGHTTP) **
GET /scaleY/image4.png -> served by Apache (or LIGHTTP) **
GET /scaleY/image5.png -> served by Apache (or LIGHTTP) **

*
Index.php check image files... If one of the images doesn't exists, it
generates.
If all images exists, no matters. Anyway PHP have to process index.php
so there is no overhead beyond a "if(file_exists))" in a foreach of images.

**
no PHP needed, images here had been always created.


Can anyone access to "/scaleY/image5.png" directly ? how? from where he
get the address?

From google? (google have to had visited the index.php) Or other search
engine? (IDEM).

Rgds.
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