useragent.class.php

<?php
/**
 * Useragent Class
 * @package php-useragent
 * @author zsx <zsx@zsxsoft.com>
 * @license GNU/GPL http://www.gnu.org/copyleft/gpl.html
 */

class UserAgentFactory {
/**
 * analyze
 * @static
 * @param  string $string         UserAgent String]
 * @param  string $imageSize      Image Size(16 / 24)
 * @param  string $imagePath      Image Path
 * @param  string $imageExtension Image Description
 * @return UserAgent
 */
    public static function analyze($string, $imageSize = null, $imagePath = null, $imageExtension = null) {
        $class = new UserAgent();
        $imageSize === null || $class->imageSize = $imageSize;
        $imagePath === null || $class->imagePath = $imagePath;
        $imageExtension === null || $class->imageExtension = $imageExtension;
        $class->analyze($string);

        return $class;
    }
}

class UserAgent {
    private $_imagePath = "";
    private $_imageSize = 16;
    private $_imageExtension = ".png";

    private $_data = array();

    public function __get($param) {
        $privateParam = '_' . $param;
        switch ($param) {
        case 'imagePath':
            return $this->_imagePath . $this->_imageSize . '/';
            break;
        default:
            if (isset($this->$privateParam)) {
                return $this->$privateParam;
            } elseif (isset($this->_data[$param])) {
                return $this->_data[$param];
            }
            break;
        }

        return null;
    }

    public function __set($name, $value) {
        $trueName = '_' . $name;
        if (isset($this->$trueName)) {
            $this->$trueName = $value;
        }
    }

    public function __construct() {
        $this->_imagePath = 'img/';
    }

    private function _makeImage($dir, $code) {
        return $this->imagePath . $dir . '/' . $code . $this->imageExtension;
    }

    private function _makePlatform() {

        $this->_data['platform'] = &$this->_data['device'];
        if ($this->_data['device']['title'] != '') {
            $this->_data['platform'] = &$this->_data['device'];
        } elseif ($this->_data['os']['title'] != '') {
            $this->_data['platform'] = &$this->_data['os'];
        } else {
            $this->_data['platform'] = array(
                "link" => "#",
                "title" => "Unknown",
                "code" => "null",
                "dir" => "browser",
                "type" => "os",
                "image" => $this->_makeImage('browser', 'null'),
            );
        }

    }

    public static function __autoload($className) {
        $filePath = dirname(__file__) . '/lib/' . $className . '.php';
        if (is_file($filePath)) {
            require_once $filePath;
        }
    }

    public function analyze($string) {
        $this->_data['useragent'] = $string;
        $classList = array("device", "os", "browser");
        foreach ($classList as $value) {
            $class = "useragent_detect_" . $value;
            // Not support in PHP 5.2
            //$this->_data[$value] = $class::analyze($string);
            $this->_data[$value] = call_user_func($class . '::analyze', $string);
            $this->_data[$value]['image'] = $this->_makeImage($value, $this->_data[$value]['code']);

        }

        // platform
        $this->_makePlatform();
    }

}
spl_autoload_register(array('UserAgent', '__autoload'));