Web::minify PHP Method

    function minify($files, $mime = NULL, $header = TRUE, $path = NULL)
    {
        $fw = Base::instance();
        if (is_string($files)) {
            $files = $fw->split($files);
        }
        if (!$mime) {
            $mime = $this->mime($files[0]);
        }
        preg_match('/\\w+$/', $files[0], $ext);
        $cache = Cache::instance();
        $dst = '';
        if (!isset($path)) {
            $path = $fw->get('UI') . ';./';
        }
        foreach ($fw->split($path, FALSE) as $dir) {
            foreach ($files as $file) {
                if (is_file($save = $fw->fixslashes($dir . $file)) && is_bool(strpos($save, '../')) && preg_match('/\\.(css|js)$/i', $file)) {
                    if ($fw->get('CACHE') && ($cached = $cache->exists($hash = $fw->hash($save) . '.' . $ext[0], $data)) && $cached[0] > filemtime($save)) {
                        $dst .= $data;
                    } else {
                        $data = '';
                        $src = $fw->read($save);
                        for ($ptr = 0, $len = strlen($src); $ptr < $len;) {
                            if (preg_match('/^@import\\h+url' . '\\(\\h*([\'"])((?!(?:https?:)?\\/\\/).+?)\\1\\h*\\)[^;]*;/', substr($src, $ptr), $parts)) {
                                $path = dirname($file);
                                $data .= $this->minify(($path ? $path . '/' : '') . $parts[2], $mime, $header);
                                $ptr += strlen($parts[0]);
                                continue;
                            }
                            if ($src[$ptr] == '/') {
                                if ($src[$ptr + 1] == '*') {
                                    // Multiline comment
                                    $str = strstr(substr($src, $ptr + 2), '*/', TRUE);
                                    $ptr += strlen($str) + 4;
                                } elseif ($src[$ptr + 1] == '/') {
                                    // Single-line comment
                                    $str = strstr(substr($src, $ptr + 2), "\n", TRUE);
                                    $ptr += empty($str) ? strlen(substr($src, $ptr)) : strlen($str) + 2;
                                } else {
                                    // Presume it's a regex pattern
                                    $regex = TRUE;
                                    // Backtrack and validate
                                    for ($ofs = $ptr; $ofs; $ofs--) {
                                        // Pattern should be preceded by
                                        // open parenthesis, colon,
                                        // object property or operator
                                        if (preg_match('/(return|[(:=!+\\-*&|])$/', substr($src, 0, $ofs))) {
                                            $data .= '/';
                                            $ptr++;
                                            while ($ptr < $len) {
                                                $data .= $src[$ptr];
                                                $ptr++;
                                                if ($src[$ptr - 1] == '\\') {
                                                    $data .= $src[$ptr];
                                                    $ptr++;
                                                } elseif ($src[$ptr - 1] == '/') {
                                                    break;
                                                }
                                            }
                                            break;
                                        } elseif (!ctype_space($src[$ofs - 1])) {
                                            // Not a regex pattern
                                            $regex = FALSE;
                                            break;
                                        }
                                    }
                                    if (!$regex) {
                                        // Division operator
                                        $data .= $src[$ptr];
                                        $ptr++;
                                    }
                                }
                                continue;
                            }
                            if (in_array($src[$ptr], ['\'', '"'])) {
                                $match = $src[$ptr];
                                $data .= $match;
                                $ptr++;
                                // String literal
                                while ($ptr < $len) {
                                    $data .= $src[$ptr];
                                    $ptr++;
                                    if ($src[$ptr - 1] == '\\') {
                                        $data .= $src[$ptr];
                                        $ptr++;
                                    } elseif ($src[$ptr - 1] == $match) {
                                        break;
                                    }
                                }
                                continue;
                            }
                            if (ctype_space($src[$ptr])) {
                                if ($ptr + 1 < strlen($src) && preg_match('/[\\w' . ($ext[0] == 'css' ? '#\\.%+\\-*()\\[\\]' : '\\$') . ']{2}|' . '[+\\-]{2}/', substr($data, -1) . $src[$ptr + 1])) {
                                    $data .= ' ';
                                }
                                $ptr++;
                                continue;
                            }
                            $data .= $src[$ptr];
                            $ptr++;
                        }
                        if ($fw->get('CACHE')) {
                            $cache->set($hash, $data);
                        }
                        $dst .= $data;
                    }
                }
            }
        }
        if (PHP_SAPI != 'cli' && $header) {
            header('Content-Type: ' . $mime . '; charset=' . $fw->get('ENCODING'));
        }
        return $dst;
    }

    Graphics::identicon(f3::get('PARAMS.id'), f3::get('PARAMS.size'));
});
$app->route('GET /invert', function () {
    Graphics::invert('{{@GUI}}test.jpg');
});
$app->route('GET /thumb', function () {
    Graphics::thumb('{{@GUI}}large.jpg', 256, 192);
}, 60);
$app->route('GET /screenshot', function () {
    Graphics::screenshot('http://www.yahoo.com', 150, 200);
});
$app->route('GET /google/map', function () {
    Google::staticmap('Brooklyn Bridge', 12, '256x256');
});
$app->route('GET /minified/@script', function () use($app) {
    Web::minify($app->get('GUI'), array(f3::get('PARAMS.script')));
});
$app->run();
class Obj
{
    public function hello()
    {
        echo 'hello';
    }
}
class CustomObj
{
    public function hello()
    {
        echo 'hello';
    }