Sorting an opendir listing?

[Eridian]

PHP novice here!  I have the following code that is working properly:

 

<?php
$dir = opendir ("puppyweek5");
        while (false !== ($file = readdir($dir))) {
                if (strpos($file, '.gif',1)||strpos($file, '.jpg',1) ) {
		$week_array[] = ($file);
                }
        }
if ($week_array) {
sort ($week_array);
foreach ($week_array as $file) {
	echo "<img src=\"puppyweek5/$file\" border=\"1\"><br /><br />";
}
}
?>

 

I have various directories where I have photos stored.  All my photos begin with the date (yy.mm.dd) and a hyphen (for instance, "100406-").  I take anywhere from 0 to a few hundred photos a day, then upload the ones I want to be displayed using that code.  Here is a sampling of yesterday's files:

 

100405-13.jpg

100405-21.jpg

100405-22.jpg

100405-36.jpg

100405-118.jpg

100405-156.jpg

100405-178.jpg

100405-234.jpg

 

This is also the order (alphanumerical) I want them to be displayed in.  However, using the code I mentioned above, they are currently being displayed as:

 

100405-13.jpg

100405-118.jpg

100405-156.jpg

100405-178.jpg

100405-21.jpg

100405-22.jpg

100405-234.jpg

100405-36.jpg

 

How can I fix this without [physically] changing any filenames?  (I have thousands of photo files from many years and have no interest in changing any of their names.)

 

TiA!

[anupamsaha]

Hi,

 

It seems you cannot do anything much with the "sort" command. The output of the command is correct as you can see its a string sorting.

 

Thanks.

[ignace]

You need natsort which applies the "natural order sorting" algorithm. This algorithm addresses this problem.

[Eridian]

BRILLIANT.  I just knew there had to be a simple way to go about this.  Thank you very much!