What best practices should be followed when maintaining relationships between folders and subfolders in PHP while using RecursiveDirectoryIterator?

When maintaining relationships between folders and subfolders in PHP using RecursiveDirectoryIterator, it is important to properly handle the nesting of directories to avoid conflicts or errors. One best practice is to use the RecursiveIteratorIterator along with RecursiveDirectoryIterator to iterate through the directories and subdirectories in a structured manner. Additionally, keeping track of the directory levels can help maintain the relationship between folders and subfolders.

// Create a RecursiveDirectoryIterator object
$directoryIterator = new RecursiveDirectoryIterator('/path/to/directory');

// Create a RecursiveIteratorIterator object
$iterator = new RecursiveIteratorIterator($directoryIterator, RecursiveIteratorIterator::SELF_FIRST);

// Iterate through the directories and subdirectories
foreach ($iterator as $file) {
    // Get the current directory level
    $depth = $iterator->getDepth();
    
    // Use $file to access the file or directory
    // Use $depth to determine the nesting level
}