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(服务器端)

<?php

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[];

                                 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;

         }

}

      //实现方法

        $mac = new GetMacAddr(PHP_OS);

        echo $mac->mac_addr;