How can I list all files in a directory, including subdirectories, using PHP?

Listing All Files, Including Subdirectories, in PHP

If you're looking to list all files in a directory, including those within subdirectories, PHP offers a convenient solution.

To accomplish this, you can employ a combination of RecursiveDirectoryIterator and RecursiveIteratorIterator.

<code class="php">foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator('.')) as $filename)
{
    // filter out "." and ".."
    if ($filename->isDir()) continue;

    echo "$filename\n";
}</code>

Here's how it works:

• RecursiveDirectoryIterator creates an object representing a directory and its contents. It iterates through each file and subdirectory, providing an array of objects.
• RecursiveIteratorIterator adds additional functionality to iterate through the objects returned by RecursiveDirectoryIterator, allowing us to access each filename.
• The condition if ($filename->isDir()) continue; filters out directories (represented by . and ..) from the list of files.

By integrating these two iterators, you can easily generate an array of filenames that include both files in the current directory and those located in subdirectories.

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