ScanDir() rerturns wrong sorted array php [duplicate] - php

Question

This question already has answers here:
scandir - sort numeric filenames
(3 answers)
Closed 2 years ago.
I am building a website and I am having some issues with directories, files and with the php scandir() function. What i have to do is to take images from a folder and then dynamically create a gallery with the these images. Each image has a number in front of its name (ex. 1,nameimg.jpg; 2,nameimg.jpg ecc.) and the problem is that the array returned from scandir() isn't sorted or, better, it is sorted until i have 9 images but when i try to reach the number ten or above it keeps returning this:
Array (
[0] => 1,ADR19604.jpg
[1] => 10,_MG_9690.jpg
[2] => 11,_MG_9785.jpg
[3] => 2,_MG_9685.jpg
[4] => 3,_MG_9732.jpg
[5] => 4,_MG_9750.jpg
[6] => 5,_MG_9759.jpg
[7] => 6,ADR19551.jpg
[8] => 7,ADR19586.jpg
[9] => 8,ADR19604.jpg
[10] => 9,ADR19608.jpg
)
What can i do this sort the array correctly, even when there are more than 9 files?

Answer 1

If all of your files have a UNIQUE number in front of them, you can resort the array really easily like so:
<?php
$imgData = [
'1,ADR19604.jpg',
'10,_MG_9690.jpg',
'11,_MG_9785.jpg',
'2,_MG_9685.jpg',
'3,_MG_9732.jpg',
'4,_MG_9750.jpg',
'5,_MG_9759.jpg',
'6,ADR19551.jpg',
'7,ADR19586.jpg',
'8,ADR19604.jpg',
'9,ADR19608.jpg',
];
$formattedArray = [];
foreach ($imgData as $key => $value) {
//Extract the identifier
$pieces = explode(',', $value);
$number = $pieces[0];
$imgName = $pieces[1];
$formattedArray[$number] = $imgName;
}
var_dump($formattedArray);
If you have more than one image, with the same identifying number:
// Uses $imgData from first example.
$formattedArray = [];
foreach ($imgData as $key => $value) {
//Extract the identifier
$pieces = explode(',', $value);
$number = $pieces[0];
$imgName = $pieces[1];
$formattedArray[$number][] = $imgName;
}
var_dump($formattedArray);
If you're pulling the data from a database, you could also consider using separating the product ID to it's own column for better ordering.