gistfile1.php

<?php

namespace erikfrerejean\musicunique;

// Setup quick 'n dirty autoloader
spl_autoload_register(function($class) {
  $namespace = 'erikfrerejean\\musicunique\\';

	if (strpos($class, $namespace) !== 0)
	{
		return;
	}

	$class = substr($class, strlen($namespace));

	require __DIR__ . "/$class.php";
}, true, true);

// Absolute path to the music directory
$path = '/Volumes/Macintosh/iTunes/Music/';

// Simple filter
class MusicuniqueFilter extends \RecursiveFilterIterator
{
	private static $found = array();

	public function __construct(\RecursiveDirectoryIterator $iter)
	{
		parent::__construct($iter);
	}

	public function accept()
	{
		// Directories don't get tested
		if ($this->current()->isDir())
		{
			return true;
		}

		// Filename
		$filename = $this->current()->getFileName();

		// Don't bother with hidden files
		if ($filename[0] === '.')
		{
			return false;
		}

		// Remove the extension
		$basename = $this->current()->getBasename(
			'.' . $this->current()->getExtension()
		);

		// We'll be removing all files *not* ending on ` 2`
		if (substr($basename, -2) !== ' 2')
		{
			return false;
		}

		return true;
	}
}

// Loop through all the files
$iterator = new \RecursiveIteratorIterator(
				new MusicuniqueFilter(
					new \RecursiveDirectoryIterator($path)
				)
			);

$found = array();

foreach ($iterator as $fileinfo)
{
	array_push($found, $fileinfo->getPathname());
}


// dump
foreach ($found as $f)
{
	if (file_exists($f))
	{
		echo "Delete [$f]\n";
		unlink($f);
	}
}

exit;