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Re: Windows binaries 64bit for PHP [message #178236 is a reply to message #178229] Thu, 24 May 2012 04:18 Go to previous messageGo to previous message
Jerry Stuckle is currently offline  Jerry Stuckle
Messages: 2598
Registered: September 2010
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On 5/23/2012 4:45 PM, PlastiqueMAN wrote:
> On 2012-05-11 23:38:06 +0000, The Natural Philosopher said:
>
>> Shake wrote:
>>> Jerry Stuckle avait écrit le 11/05/2012 :
>>>> On 5/11/2012 2:58 PM, Shake wrote:
>>>> > Jerry Stuckle a couché sur son écran :
>>>> >>
>>>> >> Loading the script, starting the scripting module, initializing the
>>>> >> environment, interpreting and running the script, checking for the
>>>> >> presence of the image, storing a resized script if necessary, loading
>>>> >> the image and sending it, and cleaning up the environment.
>>>> >>
>>>> >> This vs. sending the image directly via an <img ...> tag.
>>>> >>
>>>> >> Nope, no extra overhead! And no way to send the image without a
>>>> >> script!
>>>> >>
>>>> >
>>>> > The Extra overhead is something like in the code that generate the
>>>> > page:
>>>> >
>>>> > <?php
>>>> > if(!file_exists(IMG_PATH.$image_file)) scaleImage($image_file);
>>>> > ?>
>>>> >
>>>> > Not look like an "application killer" to me.
>>>> >
>>>> > Greetings.
>>>> >
>>>> >
>>>>
>>>> There's a lot more to the overhead than that!
>>>
>>> Which?
>>>
>>> Is the image going to be accessed directly by its URL, or is loaded
>>> inside a webpage? I am sure is this last case.
>>>
>>> So Loading a PHP script will occur 99.999% if you reescaled the image
>>> previously with a batch or not. All the work of load an script, will
>>> be done always.
>>>
>>> I don't believe that "react" to a 404 error is the good aproach, but
>>> generating dinamically the scaled images when the page that show them
>>> is required.
>>>
>>> And this only need the few lines to test if file exists and generate
>>> the images if not.
>>>
>>> The fact that the image is directly accessed without pasing first for
>>> the php script...
>>
>> is hardly any CPU.
>>
>> The same actions take place: the file must be opened headers
>> constricted and then data streamed. whether apache or PHP does this is
>> scarcely an issue.
>
> Sorry to say this, but PHP compared to the default handler in Apache is
> sloooooow. You can test this simply by writing a php script that copies
> some large files from a directory to another and then write an identical
> C program...
>

What do you expect - an interpreted program versus q compiled program?
The compiled program will always wind.

> If this site we're talking about needs to serve a lot of request, I have
> to agree with Jerry on this one.
>
>>>
>>> Someone talked about a catalog of image... I am sure they are
>>> accessed through a we, not directly.
>>>
>>> Even if they are accessed via search engines, these search engines
>>> have to visit the scripts that would generate the scaled images.
>>>
>>> Greetings.
>
>


--
==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================
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