/** 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();                                  break;                   }                                  $temp_array = array();               foreach ( $this->return_array as $value ){                             if ( preg_match("/[0-9a-f][0-9a-f][:-]"."[0-9a-f][0-9a-f][:-]"."[0-9a-f][0-9a-f][:-]"."[0-9a-f][0-9a-f][:-]"."[0-9a-f][0-9a-f][:-]"."[0-9a-f][0-9a-f]/i",$value, $temp_array ) ){                                  $this->mac_addr = $temp_array[0];                                  break;                        }                   }               unset($temp_array);               return $this->mac_addr;          }                  function forWindows(){               @exec("ipconfig /all", $this->return_array);               if ( $this->return_array )                        return $this->return_array;               else{                        $ipconfig = $_SERVER["WINDIR"]."\system32\ipconfig.exe";                        if ( is_file($ipconfig) )                           @exec($ipconfig." /all", $this->return_array);                        else                           @exec($_SERVER["WINDIR"]."\system\ipconfig.exe /all", $this->return_array);                        return $this->return_array;               }          }                      function forLinux(){               @exec("ifconfig -a", $this->return_array);               return $this->return_array;          }     } //方法使用 //$mac = new GetMacAddr(PHP_OS); //echo $mac->mac_addr;