Folders first from RecursiveDirectoryIterator - php

Question

I wrote this code a long time ago to get files from a folder structure given in $dir.
$recursiveIterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir), RecursiveIteratorIterator::CHILD_FIRST);
$ritit = new RegexIterator($recursiveIterator, $filter);
foreach ($ritit as $splFileInfo) {
if(($splFileInfo->getFileName() != ".") && ($splFileInfo->getFileName() != "..")) {
$path = $splFileInfo->isDir()
? array($splFileInfo->getFilename() => array())
: array($splFileInfo->getFilename());
for ($depth = $ritit->getDepth() - 1; $depth >= 0; $depth--) {
$path = array($ritit->getSubIterator($depth)->current()->getFilename() => $path);
}
$return = array_merge_recursive($return, $path);
}
}
And as the title suggests, I want the $return array to have the folders first. I first attempted to correct this with a foreach after the loop, and sort into $folders and $files array, however this wouldnt change the contents inside the folders, if there were mutliple children inside children.
Is there a way to modify the above loop so that all folders appear first in the array and files after? Including children and children's children?

Answer 1

I don't think that you can modify the loop to get the output array the way you want it. Instead, I'd rather use recursive sorting function to sort the array after the loop.
First, create function that defines the logic for sorting elements. In your case, you want the array-type elements to be the first elements in a tier, so the sorting function could look like this:
function dirFirstSorting($a, $b)
{
if (is_array($a) && is_string($b)) {
return -1;
} elseif (is_string($a) && is_array($b)) {
return 1;
} else {
return 0;
}
}
Then, create a function that recursively sorts elements in array:
function sortFilesListing(&$array)
{
if (is_array($array)) {
uasort($array, "dirFirstSorting");
array_walk($array, "sortFilesListing");
}
}
All you need to do now, is to call sortFilesListing function with $return array provided:
sortFilesListing($return);
The $return array elements should be now sorted accordingly.