如何对数组中的浮点数进行排序？

Question

I tried sort , Ksort , multiSort , nothing is working and I'm not sure why.I can use print_r and see that it is an array but it won't sort just keeps giving errors. I think it is because the values are floats but I may be wrong.

Here's a page with the array shown using print_r function:

http://forcedchange.testdomain.pw/gallery/

Here is my code:

<?php 
$uploads = wp_upload_dir(); //Path to my gallery uploads folder
if ($dir = opendir($uploads['basedir'].'/gallery-2')) {
    $images = array();
    while (false !== ($file = readdir($dir))) { 
        if ($file != "." && $file != "..") {
            $images[] = $file; 
        }
    }
     closedir($dir);
}

$images = ksort($images);  /* not working */
// echo '<pre>';
// echo print_r($images);
// echo '</pre>';
foreach($images as $image) {
    echo '<figure><img src="';
    echo $uploads['baseurl'].'/gallery-2/'. $image;
    echo '" alt="" /></li>';
    echo '<figcaption>';
    echo '<p>' .  erq_shortcode() . '</p>';
    echo '</figcaption>';
    echo '</figure>';

}
?>

Answer 1

Try using natsort($images) (don't know which result you want). It should sort the array like:

1.png
2.png
...
9.png
10.png
...
20.png

Assigning won't work because the sort-funcs return a bool... the sorting is done direct inside the given array.

Answer 2

$images=glob("/path/*.{jpg,png,gif}");

ksort($images);

foreach($images as $image)
{
...
... do something with basename($image);
...
}