Alter PHP Array - php

Question

I'm need an array of all the folders in a directory, im using laravel to get an array of folders in the directory using the below code.
Storage::allDirectories('/public');
this returns an array like below.
$directories = [
"Gallery",
"Images",
"Images/Proof",
"Images/Proof/Another",
];
I need a way to remove duplicate parent directories, so for example Images will be remove if Images/Proof/Another exists or something like that, i just need to build an array of a directory and its subfolders as one array, if that makes sense.
so for example:
$directories = [
["Gallery"],
["Images/Proof/Another"],
];
Or something like this, I can't think of a way to get this to work.
I'm building a custom media manager component if anyone was wondering, some exist but i have no control over them so i built my own.
all help is appreciated.
Can you post the code you have tried so far
For 1 i can't get my head around the logic, thats why im asking what i've done "Which i dont see how it would help at all"
foreach (Storage::allDirectories('/public') as $folder)
{
$all_folders[] = $exploded('/',$folder);
}
Im trying to separate the array into smaller arrays and check each exploded bit against another. But this has me running in circles.

Answer 1

Do like below (Easiest way):-
$final_array = [];
foreach($directories as $dir){
$final_array[explode('/',$dir)[0]] = $dir;
}
$final_array =array_values($final_array);
Output:- https://eval.in/912417
Or:-
$final_array = [];
foreach($directories as $dir){
$final_array[explode('/',$dir)[0]][0] = $dir;
}
$final_array =array_values($final_array);
Output:-https://eval.in/912418

Answer 2

If you rsort (descending) it and foreach it you can then use preg_grep to see if it exsists in your new array.
If not add it.
$directories = [
"Gallery",
"Images",
"Images/Proof",
"Images/Proof/Another",
];
Rsort($directories);
$new=[];
Foreach($directories as $val){
If(!preg_grep("~" . $val. ".*~",$new)){
$new[] = $val;
}
}
Var_dump($new);
https://3v4l.org/0EnZ3
Preg_grep will look for the pattern and see if it exsists in the array.
Since I loop descending it will first look at Images/Proof/Another then add it to the list because it's not there.
Next iteration will look at Images/Proof/ and since preg_grep has pattern Images/Proof/.* it will be true thus not add it in the list.
Then the same with images.

Answer 3

You can just filter array using array_filter function.
<?php
$directories = [
"Gallery",
"Images",
"Images/Proof",
"Images/Proof/Another",
];
$filtered = array_filter($directories, function($v) use ($directories) {
foreach($directories as $dir) {
if(strpos($dir, $v . "/") === 0) {
return false;
}
}
return true;
});
var_dump($filtered);
Not so elegant, but clear to read.

Answer 4

Quick and dirty, but tested and works
function removeRedundantParents($directories)
{
foreach ($directories as $key => &$val)
{
foreach ($directories as $i => &$v)
{
if ($val !== $v && substr($v, 0, strlen($val)) == $val)
{
unset($directories[$key]);
continue;
}
}
}
return $directories;
}

Answer 5

I achieved this by removing the row if it satisfies the logic.
Mutative, but satisfies the requirement correctly.
Tested, works properly.
check out https://eval.in/912439 for the snippet and output
Code
$directories = array_flip($directories);
foreach ($directories as $dir => $key) {
$parent_dir = preg_match('/(.*)\//', $dir, $match);
if (isset($match[1])) {
unset($directories[$match[1]]);
}
}
$directories = array_keys($directories);