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php-general | 2001062

RE: [PHP] image code From: Andrew Chase (andrew.chase <email protected>)
Date: 06/20/01

I wrote thumbnailing script that did exactly what you said below, but to
eliminate the needless regeneration of existing thumbnails I just did a
check to see if the thumbnail already exists:

if(!file_exists("/path/to/thumbnail.jpg")){

        //Create the thumbnail here

}

If the thumbnail already exists, the script skips over it, but if it doesn't
it creates it as needed.

-Andy

> -----Original Message-----
> From: Hugh Bothwell [mailto:hugh_bothwell <email protected>]
> Sent: Tuesday, June 19, 2001 1:02 PM
> To: php-general <email protected>
> Subject: Re: [PHP] image code
>
>
> Seems pretty straightforward, actually; I would write a script
> that takes as
> parameters the name and desired size of a graphic, resizes it, and returns
> the thumbnail ( look at ImageJPEG() ). Then I would write a script that
> iterates through the files in the directory and, for each, gets a
> thumbnail.
>
> The only problem is that this is a fair bit of work; if it's called at all
> frequently, you might be better to create a static version. But that of
> course does away with the 'self-updating' bit.
>
> A possible fix would be to write master page:
> check how long since the page has been updated; if necessary, create and
> save an updated version of the imagelist. Then forward the user to the
> saved static version. This would let you have the page update itself on a
> delayed basis, ie hourly. 

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