How do I sort pictures alphabetically in gallery?

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Hi there, I have this php gallery and I need to sort pictures alphabetically. How can I do that? Thank you.

What I have tried:

PHP

<?php

$dir = htmlspecialchars($_GET["dir"]);
$className = htmlspecialchars($_GET["className"]);

if ($handle = opendir($dir)) {
    echo "<div class='photogallery $className'><ul>";
    while (false !== ($entry = readdir($handle))) {
        if ($entry != "." && $entry != ".." && preg_match('/(jpg)|(JPG)$/', $entry) == 1) {
            $path = $dir."/".$entry;
            $pathThumb = $dir."/thumbs/".$entry;

            echo "
                <li>
                    <a href='/$path' data-lightbox='gallery1' data-title=''><img src='/$pathThumb' alt=''></a>
                </li>";
        }
    }
    closedir($handle);
    echo "</ul><div class='both'></div></div>";
}
?>

Posted 23-Sep-22 8:17am

JanLiska06

Updated 26-Sep-22 3:49am

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Comments

Member 15627495 23-Sep-22 16:03pm

in php, the function is_file($entry) return true when checking a file.
it avoid to test '.' , '..'

$temp="";
while ( ..... ){
// use concatenation for html in a temporary var
 if (is_file($entry)){
 $temp .= "<li> ......</li>
 }
}
echo "<ul>".$temp."</ul><div>........" :

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Richard Deeming · Answer 1 · 2022-09-26T03:49:00

PHP: readdir - Manual[^]
The entries are returned in the order in which they are stored by the filesystem.

If your filesystem doesn't store the entries alphabetically, then try:

PHP: scandir - Manual[^]
sorting_order
By default, the sorted order is alphabetical in ascending order. If the optional sorting_order is set to SCANDIR_SORT_DESCENDING, then the sort order is alphabetical in descending order. If it is set to SCANDIR_SORT_NONE then the result is unsorted.