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Display the last uploaded image on a page

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Jun 26.2013

We have a camera which uploads images to our webserver every 15 seconds. This static image is displayed on a page, and refreshed to show the latest image. This is uploaded as “webcam.jpg”.

I’d like to change the upload such that it uploads a set number of images. This will up upload images as “webcam1_1.jpg” through to “webcam1_480.jpg”.
Once 480 is uploaded, it resets to 1.
Ultimately I aim to wrap all 480 images into an 60 second loop of the previous 2 hours captured.

Is it possible to determine the newest image uploaded to the webserver and display this image each 15 second refresh?
For example if the latest image is webcam1_178, this image is displayed on the page. When next checked, it finds webcam1_179 and displays this image.
Date modified on the image includes the date and time uploaded.

I don’t use PHP, but that’s the language our webserver needs so I appreciate any help!

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PHP

2 Comments(s) ↴

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@TheBearMayJun 27.2013 — Easiest way would be to read the directory information into an array and sort on the modification date/time.

Something close to:
[code=php]
$files = array();
if ($handle = opendir('.')) {
while (false !== ($file = readdir($handle))) {
if ($file != "." && $file != "..") {
$files[filemtime($file)] = $file;
}
}
closedir($handle);


// sort
ksort($files);
// find the last modification
$reallyLastModified = end($files);

foreach($files as $file) {
$lastModified = date('F d Y, H:i:s',filemtime($file));
if(strlen($file)-strpos($file,".swf")== 4){
if ($file == $reallyLastModified) {
// do stuff for the real last modified file
}
echo "$file$lastModified";
}
}[/code]
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@Mac_NzauthorJun 27.2013 — Thanks for the quick reply!

How do I add the directory the images are in for the array?

The images are all .jpg, should the ($file,".swf") in the foreach be .jpg?
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