Re: Checking file existence

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John Pillion wrote:
Very nifty Brad,

One addition though, so she/you can work back from any point:


<MoreUntestedCode>

$i = 0;
$start = strtotime("2006-10-05 12:05am");

while(count($img_array) < 5) {

	$year = date("Y", strtotime("-$i minutes", $start));
	$month= date("m", strtotime("-$i minutes", $start));
	$day  = date("d", strtotime("-$i minutes", $start));
	$hour = date("H", strtotime("-$i minutes", $start));
	$hhmm  = date("Hi", strtotime("-$i minutes", $start));
	$filename = "file.$hhmm.jpg";

	if(file_exists("/path/to/$year/$month/$day/$hour/$filename")) {
		$img_array[] = $filename;
	}
			
	$i++;
}

print_r($img_array);

</MoreUntestedCode>

Small, minor, insignificant point.... If I have less than 5 files this loop will never end. But you all knew that right?

Also, depending on the frequency of files (i.e. are there months-worth of gaps or minutes at most), the following might be faster...

* glob the files in the first dir
* binary chop to find the nearest to your start time
* go back in the array from that point to find your 5
* if you hit the start of the array, go down a day, repeat the glob and start from the end of the new array

-Stut

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