Sort files by name

So far I have:


<?php


$lstFileNames=array();
$lstFileTitles=array();
$file_names = array();
$lines = file ('/path/to/files/true_names.txt');
foreach ($lines as $line_num => $line)
{
$parts = explode('|',$line);
$file_names[$parts[0]] = $parts[1];
}



if ($handle = opendir('/path/to/files/midis/')) {
while (false !== ($file = readdir($handle))) {
if ($file != "." && $file != "..") {


echo " <tr>";
echo " <td valign=\"top\" colspan=\"3\" width=\"95%\"><b><font color='#6B7B90'>" . $file_names[$file] . "</font></b></td>";
echo " </tr>";




if ($handle2 = opendir('/path/to/files/midis/' . $file)) {
while (false !== ($file2 = readdir($handle2))) {
if ($file2 != "." && $file2 != ".." && $file2 != "index.html") {




$filename = '/path/to/files/midis/' . $file . '/' . $file2;




echo " <tr>";
echo " <td valign=\"top\" width=\"65%\"><a href=\"http://www.thedevilspride.com/files/midis/$file/$file2\">";
echo " " . $file_names[$file2] . "</a></td>";
echo " <td width=\"5%\">&nbsp;</td>";
echo " <td align=\"right\" valign=\"top\" width=\"35%\">" . number_format(filesize($filename)/1024)." KB" . "</td>";
echo " </tr>";

}
}
closedir($handle2);
}
echo "<tr>";
echo " <td valign=\"top\" width=\"65%\">&nbsp;</td>";
echo " <td width=\"5%\">&nbsp;</td>";
echo " <td align=\"right\" valign=\"top\" width=\"35%\">&nbsp;</td>";
echo " </tr>";

}
}
closedir($handle);
}


?>

At the moment they are all sorted by date.
Does anyone know how I could sort the files by their filesnames?
I've tried sort() but not too sure how to get it to work.

try using ksort() rather than sort.

I've got no idea to add that to my existing code :(

I've tried:

if ($handle2 = opendir('/path/to/files/midis/' . $file)) {
while (false !== (ksort($file2 = readdir($handle2)))) {
if ($file2 != "." && $file2 != ".." && $file2 != "index.html") {

also tried adding ksort($file2); under the above code

Arrays (and sorting them) aren't my speciality

$lstFileNames=array();
$lstFileTitles=array();
$file_names = array();
$lines = file ('/path/to/files/true_names.txt');
foreach ($lines as $line_num => $line)
{
$parts = explode('|',$line);
$file_names[$parts[0]] = $parts[1];
}

ksort($file_names);


should put them in alphanumeric, then you can print the filenames from that array.