PHP: Recursively copy a directory, including symlink support

recursive-copy.php

<?php
// Based on
// http://uk1.php.net/manual/en/function.copy.php#104020

function copy_dir($src, $dst)
{
    if (is_link($src)) {
        symlink(readlink($src), $dst);
    } elseif (is_dir($src)) {
        mkdir($dst);
        foreach (scandir($src) as $file) {
            if ($file != '.' && $file != '..') {
                copy_dir("$src/$file", "$dst/$file");
            }
        }
    } elseif (is_file($src)) {
        copy($src, $dst);
    } else {
        echo "WARNING: Cannot copy $src (unknown file type)\n";
    }
}