Sorting list of files in an a multi dimensional array

Question

There are many similar questions and I almost have the solution but I have a case that isn't sorted like the client wants it.

I am using the following function to sort my array:

function sortFilesByName($a, $b) {
    if (basename(strtolower($a['path'])) == basename(strtolower($b['path']))) {
        return 0;
    }
    return (basename(strtolower($a['path'])) < basename(strtolower($b['path']))) ? -1 : 1;
}

The problem is that I get the following order when sorting my list:

file2.png
file3.png
file4.png
file5.png
file6.png
file7.png
file8.png
file9.png
file10.png
file11.png
file1.png

The client would like to have file1.png at the top of the list and I have to say I'm a little confused as how to achieve that. Any help is appreciated :)

After the answers given I've gotten much closer, I changed my function to the following:

function sortFilesByName($a, $b) {
    return strnatcmp(strtolower(basename($a['path'])), strtolower(basename($b['path'])));
}

And it works! Thanks!

Mob · Accepted Answer · 2011-10-14 20:15:31Z

3

I think you need the natsort(); function instead. It sorts alphanumerically.

<?php 
   $numbers = array("1.gif","2.gif","20.gif","10.gif"); 
   natsort($numbers); 
   print_r($numbers); 
?>

Outputs

Array
(
[0] => 1.gif
[1] => 2.gif
[3] => 10.gif
[2] => 20.gif
)

answered Oct 14, 2011 at 20:15

Mob

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1 Comment

Gazillion Over a year ago

Thank you, your answer lead me to right spot, posted my new function in my question.

dvcolgan · Accepted Answer · 2011-10-14 20:13:34Z

3

The natsort function will do what you want: http://php.net/manual/en/function.natsort.php.

answered Oct 14, 2011 at 20:13

dvcolgan

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1 Comment

Gazillion Over a year ago

Thanks, natsort uses the algorithm that I needed which lead me to natsortcmp!

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