JSCompressor class to minify JS files (uses JSMin and JSMinPlus libraries)

js-compressor.php

<?php
class JSCompressor {
  const COMPRESS_METHOD_JSMIN      = 1;
	const COMPRESS_METHOD_JSMIN_PLUS = 2;

	public static function minify( $file, $newfile = null, $compress_method = self::COMPRESS_METHOD_JSMIN, $debug = false ) {

		if ( $debug )
			$time_start = microtime( true );

		switch($compress_method)
		{
			case self::COMPRESS_METHOD_JSMIN:
				require( 'min/lib/JSMin.php' );
				$class = 'JSMin';
				break;

			case self::COMPRESS_METHOD_JSMIN_PLUS:
				require( 'min/lib/JSMinPlus.php' );
				$class = 'JSMinPlus';
				break;
		}
		if ( !$newfile ) {
			$pi      = pathinfo( $file );
			$newfile = sprintf( "%s-%s.%s",
				$pi[ 'filename' ],
				strtolower( $class ),
				$pi[ 'extension' ] );
		}
		if ( file_exists( $file ) ) {
			$source    = file_get_contents( $file );
			$minsource = $class::minify( $source );
			file_put_contents( $newfile, $minsource );
		}
		if ( $debug ) {
			$time_end = microtime( true );
			$time = $time_end - $time_start;
			printf( "<p>Minify Method: %s<br>Minify Time: %f<br>File Size: %d<br>Minified File Size: %d</p>", $class, $time, @filesize( $file ), @filesize( $newfile ) );
		}
	}
}

JSCompressor::minify( 'jquery-1.10.2.js', '', JSCompressor::COMPRESS_METHOD_JSMIN, true ); // JSMin
JSCompressor::minify( 'jquery-1.10.2.js', '', JSCompressor::COMPRESS_METHOD_JSMIN_PLUS, true ); // JSMinPlus