<?php    
/**    
获取网卡的MAC地址原码；目前支持WIN/LINUX系统    
获取机器网卡的物理（MAC）地址    
**/    
      
class GetMacAddr{    
      
        var $return_array = array(); // 返回带有MAC地址的字串数组    
        var $mac_addr;    
      
        function GetMacAddr($os_type){    
             switch ( strtolower($os_type) ){    
                      case "linux":    
                                $this->forLinux();    
                                break;    
                      case "solaris":    
                                break;    
                      case "unix":    
                                 break;    
                       case "aix":    
                                 break;    
                       default:    
                                 $this->forWindows();