How to organize files by last modified date?

sapoxgn

hi there ppl, my gallery script is working just fine, but now i need something more..

take a look at it

http://www.xgn.com.br/galeria.php?dir=/photo/pictures/Codename%20Panzers%20Phase%20two/03_02_2005/

But some games have a loot of screenshots and i dont wanna mess them out.. and i wanted to make just onde gallery for each game...

So far i have this:


<?php

function ls ($curpath,$subdir) {
   $dir = dir($curpath . "/" . $subdir);
// echo("<b>$curpath</b>");
//echo "<blockquote>";
   while ($file = $dir->read()) {

   if($file != "." && $file != "..") {
       if (is_dir($curpath.$file)) {
                           ls($curpath.$file."/");
         } else {
//                 echo("$file<br>");
				 $file_array[] = $file;
             }
       }
   }
   $dir->close();
//   echo "</blockquote>";
   return $file_array;
}


$startpath = "/home/xgncom/public_html/";
$subdir = $_GET[dir];
$rows = array();
$rows = ls($startpath,$subdir);

$rows_count = count($rows);
$count = 0;

echo '<table  align="center" border="0" cellpadding="0" cellspacing="6">';
for ($i = 0; $i <= $rows_count; $i++) {
//	echo $rows[$i];
	$ext =  substr($rows[$i], -3);
	if($ext == "jpg" or $ext == "gif" or $ext == "JPG" or $ext == "GIF"){
	$count++;	}
	if($count == 1) {
		echo '<tr >';
	}

else if($count <= 5) {
	if($ext == "jpg" or $ext == "gif" or $ext == "JPG" or $ext == "GIF") {
			echo '<td><a href="' . $subdir . '/' . $rows[$i] . '" target="_blank"><img border="0" src="' . $subdir . '/' . '_thm/thm_' . $rows[$i] . '"></a></td>';		
		}
	}
else {
	echo '</tr>';
	$count = 1;
}
}
echo '</table>';
?>

But now i need to organize the gallery, i want the last modified files to be shown first, descenting from the modified date..

Is there a simple way to do this?

Thanx for any help 🙂

rehfeld

yes its pretty simple.

after you get all your filenames into an array, just use a combination of usort() and filemtime()

something like....


function cmp_filemtime($a, $b) {
    return filemtime($a) - filemtime($b);
}

usort($array, 'cmp_filemtime');

sapoxgn

Originally posted by rehfeld
yes its pretty simple.

after you get all your filenames into an array, just use a combination of usort() and filemtime()

something like....
function cmp_filemtime($a, $b) {
    return filemtime($a) - filemtime($b);
}

usort($array, 'cmp_filemtime');
[/B]

didnt get it.. $a and $b wil receive what value? 😕

rehfeld



function cmp_filemtime($a, $b) {
    return filemtime($a) - filemtime($b);
}




$files = array(
   'path/to/foo.txt',
   'path/to/bar.txt',
   'path/to/baz.txt',
);


usort($files, 'cmp_filemtime');

usort will feed 2 elements of your array to your comparson function at a time

so it would do this

return filemtime('path/to/foo.txt') - filemtime('path/to/bar.txt');

and use the result to figure which order to put things in. it will iterate through all the elements in your array, 2 at a time.

please read the manual for usort()