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Re: Windows binaries 64bit for PHP [message #178243 is a reply to message #178240]

Thu, 24 May 2012 13:12

Jerry Stuckle
Messages: 2598
Registered: September 2010

Karma:

Senior Member

On 5/24/2012 6:00 AM, Shake wrote:
> 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.
>

Right. Someone has to check on every request whether the image exists
or not. In your case it is index.php. And although you think each test
is a small overhead, it all adds up - very quickly.

It's completely unnecessary if the images have been generated offline
and uploaded.

> **
> 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.

Sure they could. It's a URI, just like every other resource on the
server. And there are any number of ways of getting the URI, especially
if you're using a pattern to generate the file names.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================

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[Message index]

		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Thu, 10 May 2012 03:53
		Re: Windows binaries 64bit for PHP By: Daniel Pitts on Thu, 10 May 2012 20:15
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Thu, 10 May 2012 20:48
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Thu, 10 May 2012 21:05
		Re: Windows binaries 64bit for PHP By: Daniel Pitts on Thu, 10 May 2012 21:29
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Thu, 10 May 2012 23:35
		Re: Windows binaries 64bit for PHP By: Daniel Pitts on Fri, 11 May 2012 01:50
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 02:22
		Re: Windows binaries 64bit for PHP By: Daniel Pitts on Fri, 11 May 2012 17:03
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 17:56
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Fri, 11 May 2012 09:58
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 10:51
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Fri, 11 May 2012 19:11
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 19:29
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Fri, 11 May 2012 19:53
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 22:11
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Fri, 11 May 2012 23:00
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sat, 12 May 2012 00:44
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Fri, 11 May 2012 23:38
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Fri, 11 May 2012 23:36
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Fri, 11 May 2012 13:01
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 14:34
		Re: Windows binaries 64bit for PHP By: Shake on Fri, 11 May 2012 18:58
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 19:30
		Re: Windows binaries 64bit for PHP By: Shake on Fri, 11 May 2012 19:46
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 22:14
		Re: Windows binaries 64bit for PHP By: Shake on Sat, 12 May 2012 12:42
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sat, 12 May 2012 15:04
		Re: Windows binaries 64bit for PHP By: Shake on Sat, 12 May 2012 16:40
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sat, 12 May 2012 19:49
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Sat, 12 May 2012 21:59
		Re: Windows binaries 64bit for PHP By: Shake on Sun, 13 May 2012 11:46
		Re: Windows binaries 64bit for PHP By: Peter H. Coffin on Sun, 13 May 2012 12:50
		Re: Windows binaries 64bit for PHP By: Anders Wegge Keller on Sun, 13 May 2012 14:15
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sun, 13 May 2012 14:36
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sun, 13 May 2012 13:06
		Re: Windows binaries 64bit for PHP By: Shake on Sun, 13 May 2012 16:54
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sun, 13 May 2012 17:27
		Re: Windows binaries 64bit for PHP By: Peter H. Coffin on Mon, 14 May 2012 03:26
		Re: Windows binaries 64bit for PHP By: Shake on Mon, 14 May 2012 07:51
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 12:04
		Re: Windows binaries 64bit for PHP By: Shake on Mon, 14 May 2012 12:25
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 13:37
		Re: Windows binaries 64bit for PHP By: Shake on Mon, 14 May 2012 14:22
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Mon, 14 May 2012 14:45
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 18:07
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Mon, 14 May 2012 20:37
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 21:47
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Mon, 14 May 2012 15:53
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 18:06
		Re: Windows binaries 64bit for PHP By: Shake on Mon, 14 May 2012 18:36
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 18:53
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Mon, 14 May 2012 21:04
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 21:48
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Mon, 14 May 2012 21:00
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Mon, 14 May 2012 21:57
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Fri, 11 May 2012 23:38
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sat, 12 May 2012 00:46
		Re: Windows binaries 64bit for PHP By: PlastiqueMAN on Wed, 23 May 2012 20:45
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Thu, 24 May 2012 04:18
		Re: Windows binaries 64bit for PHP By: Stig Vestl on Thu, 24 May 2012 09:40
		Re: Windows binaries 64bit for PHP By: Shake on Thu, 24 May 2012 10:00
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Thu, 24 May 2012 13:12
		Re: Windows binaries 64bit for PHP By: Shake on Thu, 24 May 2012 14:29
		Re: Windows binaries 64bit for PHP By: Michael Fesser on Thu, 24 May 2012 18:41
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Thu, 24 May 2012 19:17
		Re: Windows binaries 64bit for PHP By: Luuk on Fri, 11 May 2012 19:53
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Fri, 11 May 2012 22:15
		Re: Windows binaries 64bit for PHP By: Luuk on Sat, 12 May 2012 08:00
		Re: Windows binaries 64bit for PHP By: Jerry Stuckle on Sat, 12 May 2012 11:29
		Re: Windows binaries 64bit for PHP By: Peter H. Coffin on Sat, 12 May 2012 11:47
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Fri, 11 May 2012 23:40
		Re: Windows binaries 64bit for PHP By: The Natural Philosoph on Fri, 11 May 2012 00:07

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