PHP - reading folder, all subfolders, and files in subfolders - php

Question

I have a folder named "inspections" which has a number of subfolders named "location 1", "location 2", "location 3", etc. each with around 10-20 .png images in it.
What I am trying to do, is to read the directories of the "inspections" folder, and then read all the image files in each of the folders before returning them as a gallery on my index.php site. The problem is that I get no error message but the script doesnt return anything. I believe the problem is with generating the $files variable for each subfolder as I deploy the same script for reading folder content on another site.
Perhaps someone can point me in the right direction?
<?php
$dir = './inspections/';
if ($handle = opendir($dir))
{
$blacklist = array('.', '..', 'default', 'default.php', 'desc.txt');
while (false !== ($folder = readdir($handle)))
{
if (!in_array($folder, $blacklist))
{
if (file_exists($dir . $folder . '/desc.txt'))
{
while (false !== ($file = readdir($handle)))
{
if (!in_array($file, $blacklist))
{
$chain = file_get_contents($dir . $folder . '/chain.txt');
$website = file_get_contents($dir . $folder . '/website.txt');
$location = file_get_contents($dir . $folder . '/location.txt');
$desc = file_get_contents($dir . $folder . '/desc.txt', NULL, NULL, 0, 250) . '...';
echo "
<!-- Post -->
<div class=\"post\">
<div class=\"user-block\">
<img class=\"img-circle img-bordered-sm\" src=\"../dist/img/logo/logo_".$chain."\" alt=\"\">
<span class=\"username\">
".$folder."
</span>
<span class=\"description\"><i class=\"fa fa-map-pin\"></i> ".$location." - Posted on ". $date . "</span>
</div>
<!-- /.user-block -->
<p>".$desc."</p>
<div class=\"lightBoxGallery\">
<img src=\"".$dir . $folder . "/".$file."\" style=\"height:100px; width:100px;\">
</div>
";
}
}
}
}
}
closedir($handle);
}
?>
EDIT:
following #JazZ suggestion, I have adjusted the code and it works well now, however, assuming that one does not want to display the resized pictures itself, but rather thumbnails stored in a subfolder (eg. ./location1/thumbs/), how would I go about this?
<?php
$dir = './inspections/';
if ($handle = opendir($dir)) {
$blacklist = array('.', '..', 'default', 'default.php', 'desc.txt');
while (false !== ($folder = readdir($handle))) {
if (!in_array($folder, $blacklist)) {
echo "
<!-- Post -->
<div class=\"post\">
<div class=\"user-block\">
<img class=\"img-circle img-bordered-sm\" src=\"../dist/img/logo/gallery_icon_".$chain.".jpg\" alt=\"\">
<span class=\"username\">
".$hotel_name."".$status."
</span>
<span class=\"description\"><i class=\"fa fa-map-pin\"></i> ".$location." - Posted on ".date('jS F, Y - H:m', strtotime($posted_on))."</span>
</div>
<!-- /.user-block -->
<p>".$desc."</p>
<div class=\"lightBoxGallery\">
";
foreach (glob($dir . $folder . "/*.jpg") as $filename) {
echo "
<img src=\"".$filename."\" style=\"height:100px; width:100px;\">";
}
echo "</div>
</div>
<!-- /. POST -->
";
}
}
closedir($handle);
}
?>

Answer 1

I think your issue comes from here :
while (false !== ($file = readdir($handle))) // it reads again the same directory as it did in the first while loop
Try to replace it with
if ($sub_handle = opendir($dir . $folder)) {
while (false !== ($file = readdir($sub_handle))) {
...
}
closedir($sub_handle);
}
Also, in your case, I would use php glob() function
See a working example for your case :
$dir = './inspections/';
if ($handle = opendir($dir)) {
$blacklist = array('.', '..', 'default', 'default.php', 'desc.txt');
while (false !== ($folder = readdir($handle))) {
if (!in_array($folder, $blacklist)) {
foreach (glob($dir . $folder . "/*.png") as $filename) {
echo "$filename was found !";
echo "\r\n";
}
}
}
closedir($handle);
}
Output :
./inspections/location_4/img_1.png was found !
./inspections/location_4/img_2.png was found !
./inspections/location_4/img_3.png was found !
./inspections/location_4/img_4.png was found !
./inspections/location_4/img_5.png was found !
./inspections/location_4/img_6.png was found !
./inspections/location_3/img_1.png was found !
./inspections/location_3/img_2.png was found !
./inspections/location_3/img_3.png was found !
./inspections/location_3/img_4.png was found !
./inspections/location_3/img_5.png was found !
./inspections/location_3/img_6.png was found !
./inspections/location_2/img_1.png was found !
./inspections/location_2/img_2.png was found !
./inspections/location_2/img_3.png was found !
./inspections/location_2/img_4.png was found !
./inspections/location_2/img_5.png was found !
./inspections/location_2/img_6.png was found !
./inspections/location_1/img_1.png was found !
./inspections/location_1/img_2.png was found !
./inspections/location_1/img_3.png was found !
./inspections/location_1/img_4.png was found !
./inspections/location_1/img_5.png was found !
./inspections/location_1/img_6.png was found !
EDIT
To loop in the /inspections/location1/thumbs/ directories, this would work :
foreach (glob($dir . $folder . "/thumbs/*.png") as $filename) {
echo "$filename was found !";
echo "\r\n";
}
RE-EDIT
To glob multiple folders with the glob() function, your code should look like :
foreach (glob($dir.$folder."{/thumbs/*.png,/*.png}", GLOB_BRACE) as $filename) {
echo "$filename was found !";
echo "\r\n";
}

Answer 2

Perhaps the Function below helps. It is also somewhat commented. It scans a directory recursively (in this case, extracting image files from each directory/sub-directory).
<?php
$rootPath = './inspections/';
$regex = "#(\.png$)|(\.jpg$)|(\.jpeg$)|(\.tiff$)|(\.gif$)#";
/**
* #param string $directory => DIRECTORY TO SCAN
* #param string $regex => REGULAR EXPRESSION TO BE USED IN MATCHING FILE-NAMES
* #param string $get => WHAT DO YOU WANT TO GET? 'dir'= DIRECTORIES, 'file'= FILES, 'both'=BOTH FILES+DIRECTORIES
* #param bool $useFullPath => DO YOU WISH TO RETURN THE FULL PATH TO THE FOLDERS/FILES OR JUST THEIR BASE-NAMES?
* #param array $dirs => LEAVE AS IS: USED DURING RECURSIVE TRIPS
* #return array
*/
function scanDirRecursive($directory, $regex=null, $get="file", $useFullPath=false, &$dirs=[], &$files=[]) {
$iterator = new DirectoryIterator ($directory);
foreach($iterator as $info) {
$fileDirName = $info->getFilename();
if ($info->isFile () && !preg_match("#^\..*?#", $fileDirName)) {
if($get == 'file' || $get == 'both'){
if($regex) {
if(preg_match($regex, $fileDirName)) {
if ($useFullPath) {
$files[] = $directory . DIRECTORY_SEPARATOR . $fileDirName;
}
else {
$files[] = $fileDirName;
}
}
}else{
if($useFullPath){
$files[] = $directory . DIRECTORY_SEPARATOR . $fileDirName;
}else{
$files[] = $fileDirName;
}
}
}
}else if ($info->isDir() && !$info->isDot()) {
$fullPathName = $directory . DIRECTORY_SEPARATOR . $fileDirName;
if($get == 'dir' || $get == 'both') {
$dirs[] = ($useFullPath) ? $fullPathName : $fileDirName;
}
scanDirRecursive($fullPathName, $regex, $get, $useFullPath, $dirs, $files);
}
}
if($get == 'dir') {
return $dirs;
}else if($get == 'file'){
return $files;
}
return ['dirs' => $dirs, 'files' => $files];
}
$images = scanDirRecursive($rootPath, $regex, 'file', true);
var_dump($images);