Minify.php

<?php
class Minify
{    
    private function _minify($file) {
        /* remove comments */
        $lines = explode("\n", $file);
        $lines = array_map(
        function($line) {
            return preg_replace("@\s*//.*$@", '', $line);
        },
        $lines
        );
        $file = implode("\n", $lines);
        /* remove tabs, spaces, newlines, etc. */
        $file = str_replace(array("\r\n","\r","\n","\t","  ","    ","     "), "", $file);
        /* remove other spaces before/after ) */
        $file = preg_replace(array('(( )+\))','(\)( )+)'), ')', $file);
        return $file;
    }
    
    public MultipleMinifyJs($files, $filepath = "js/min/")
    {
        if( !is_array($files) ){
          trown new Exception("$files not is an array.");
        }
        foreach($files as $file) {
            $fileName .= str_replace("js/", "",str_replace(".js", "",$file)).'.';
            $minified .= $this->_minify(file_get_contents($file));
        }
        $fileNamePath = $filepath.$fileName.'min.js';
        file_exists($fileNamePath) ? $modified = date('M d Y H:i', filemtime($fileNamePath)) : $exists = false ;
        if ((isset($modified) && $modified < date('M d Y H:i')) || $exists === false)
        {
            is_writable($fileNamePath) ? $handle = fopen($fileNamePath, 'w') : return false ;
            fwrite($handle, $minified);
            fclose($handle);
        }
        return $fileNamePath;
    }
    
    public MultipleMinifyCss($files, $filepath = "css/min/")
    {
        if( !is_array($files) ){
          trown new Exception("$files not is an array.");
        }
        foreach($files as $file) {
            $fileName .= str_replace("css/", "",str_replace(".css", "",$file)).'.';
            $minified .= $this->_minify(file_get_contents($file));
        }
        $fileNamePath = $filepath.$fileName.'min.css';
        file_exists($fileNamePath) ? $modified = date('M d Y H:i', filemtime($fileNamePath)) : $exists = false ;
        if ((isset($modified) && $modified < date('M d Y H:i')) || $exists === false)
        {
            is_writable($fileNamePath) ? $handle = fopen($fileNamePath, 'w') : return false ;
            fwrite($handle, $minified);
            fclose($handle);
        }
        return $fileNamePath;
    }
    
}