What is the best way to create and delete folders using PHP?

To create a folder in PHP, you can use the `mkdir()` function. To delete a folder, you can use the `rmdir()` function. Make sure to set the correct permissions for the folder so that PHP can create or delete it.

// Create a folder
$folderName = "new_folder";
if (!file_exists($folderName)) {
    mkdir($folderName, 0777, true);
    echo "Folder created successfully!";
} else {
    echo "Folder already exists!";
}

// Delete a folder
$folderToDelete = "folder_to_delete";
if (file_exists($folderToDelete)) {
    rmdir($folderToDelete);
    echo "Folder deleted successfully!";
} else {
    echo "Folder does not exist!";
}