Simple yui js|css compressor php wrapper

yuicompressor.php

<?php

/**
 * yuicompressor.php
 * Simple wrapper for yui js|css compressor
 *
 * Author: swvitaliy
 */
class yuicompressor {

    const COMMAND = 'java -jar {path_to_jar}yuicompressor-{version}.jar --type={type} {output_file} {input_file}';

    public static $path_to_jar;
    public static $version = '2.4.2';

	protected static function compileCommand ($custom = array()) 
	{
		$config = array (
			'path_to_jar'=>self::$path_to_jar,
			'version'=>self::$version,
			);
		$str = self::COMMAND;
		foreach (array_merge($config, $custom) as $k=>$v)
			$str = str_replace('{'.$k.'}',$v,$str);
		return $str;

	}
	public static function minify ($type, $input_file, $output_file = NULL) 
	{
		$options = array('type'=>$type, 'input_file' => $input_file);
		$options ['output_file'] = ($output_file !== NULL) ? '-o ' . $output_file : '';
		$text = passthru(self::compileCommand($options));
		if (!$options['output_file'])
			return $text;
		return TRUE;
	}

}

// yuicompressor::$path_to_jar = __DIR__ . '/';
// echo yuicompressor::minify('css', '/full/path/to/cssfile.css');
// echo yuicompressor::minify('js', '/full/path/to/jsfile.js');