Creates an archive of a directory

create_archive.php

<?php
private function archiveDir($dir, $filename)
{
	$rootPath = realpath($dir);

	$zip = new ZipArchive;

	if ($zip->open($filename, ZipArchive::CREATE) !== true)
	{
		Log::add('Failed to open ' . $filename, Log::ERROR, 'rdmedia');
		
		return false;
	}

	// Create recursive directory iterator
	/** @var SplFileInfo[] $files */
	$files = new RecursiveIteratorIterator(
		new RecursiveDirectoryIterator($rootPath),
		RecursiveIteratorIterator::LEAVES_ONLY
	);

	foreach ($files as $name => $file)
	{
		// Skip directories (they would be added automatically)
		if (!$file->isDir())
		{
			// Get real and relative path for current file
			$filePath = $file->getRealPath();
			$relativePath = substr($filePath, strlen($rootPath) + 1);

			if ($zip->addFile($filePath, $relativePath) === false)
			{
				Log::add('Failed to add file ' . $name, Log::ERROR, 'rdmedia');
			}
		}
	}

	$zip->close();

	return true;
}