How Can I Recursively List All Files and Folders in a Directory Using PHP?

Directories and Files Recursive Traversal with PHP

Q: How can I recursively list all files and folders in a directory using a PHP function?

A: To traverse a directory and its subdirectories, follow these steps:

1. Define a PHP Function:

   function getDirContents($dir, &$results = array()) {
       $files = scandir($dir);
   
       foreach ($files as $key => $value) {
           $path = realpath($dir . DIRECTORY_SEPARATOR . $value);
   
           if (!is_dir($path)) {
               $results[] = $path;
           } else if ($value != "." && $value != "..") {
               getDirContents($path, $results);
               $results[] = $path;
           }
       }
   
       return $results;
   }

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2. Retrieve Files and Folders:

   var_dump(getDirContents('/xampp/htdocs/WORK'));

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3. Output:

   The output will contain a list of all files and folders in the specified directory, including subdirectories.

Improvements over the original code:

• Avoid Infinite Recursion: The updated code ensures that the recursion is only performed on non-root directories, preventing infinite loops.
• Use Realpath: realpath() is used to obtain the real path of the item, which resolves any symbolic links.
• Pass Results by Reference: The results array is passed by reference to avoid copying the array at each iteration, which can improve performance.

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