copy_dir.php

function copyDir($src, $dst)
{
    if (!is_dir($src)) {
        throw new Exception('src must is a directory.');
    }

    $absoluteSrcPath = realpath($src);
    $absoluteDstPath = realpath($dst);

    $dirname = basename($absoluteSrcPath);
    $dstDirPath = $absoluteDstPath . '/' . $dirname;
    if (!file_exists($dstDirPath)) {
        mkdir($dstDirPath);
    }
    $files = scandir($absoluteSrcPath);
    foreach ($files as $file) {
        if ($file !== '.' && $file !== '..') {
            $absoluteFilePath = $absoluteSrcPath . '/' . $file;
            if (is_file($absoluteFilePath)) {
                copy($absoluteFilePath, $dstDirPath . '/' . $file);
            } else {
                copyDir($absoluteFilePath, $dstDirPath);
            }
        }
    }
}