Re: Checking file existence
| From: | Jürgen Wind | Date: | Wed, 15 Nov 2006 15:36:02 +0000 |
| Subject: | Re: Checking file existence | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-244663@lists.php.net to get a copy of this message | ||
Ashley M. Kirchner wrote:
>
>
> I have files that are named in the following manner:
>
> file.####.jpg (where #### is an hhmm timestamp [hour and minutes])
>
> What's the best way to take the current hhmm timestamp and run
> backwards finding the previous 5 files, and checking whether they
> actually exist? There's a possibility one or more might not exist and
> rather than returning a blank value, I want to continue further back
> till I find the next.
>
> So for example, say I have:
>
> file 1122.jpg
> file 1121.jpg
> file 1119.jpg
> file 1117.jpg
> file 1116.jpg
> file 1114.jpg
>
> Notice the gaps, 1120, 1118, and 1115 are missing. But I still want
> to return five, thus 1122, 1121, 1119, 1117, and 1116.
>
> I thought of taking the current timestamp and loop five times,
> subtracting from it every time, but that's assuming all five are there.
> If one's missing then I only have four images.
>
>
> --
> W | It's not a bug - it's an undocumented feature.
> +--------------------------------------------------------------------
> Ashley M. Kirchner <mailto:ashley@pcraft.com> .
> 303.442.6410 x130
> IT Director / SysAdmin / Websmith . 800.441.3873 x130
> Photo Craft Imaging . 3550 Arapahoe Ave. #6
> http://www.pcraft.com ..... . . . Boulder, CO
> 80303, U.S.A.
>
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