php获取服务器端mac和客户端mac的地址

for_linux_os();            }break;             default: {                 $this->for_windows_os();             }break;         }         $temp_array = array();         foreach($this->result 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->macAddr = $temp_array[0];                 break;             }         }         unset($temp_array);         return $this->macAddr;     }    /*linux系统中获取方法*/    function for_linux_os(){         @exec("ifconfig -a", $this->result);         return $this->result;     }    /*win系统中的获取方法*/    function for_windows_os(){         @exec("ipconfig /all", $this->result);         if ( $this->result ) {            return $this->result;        } else {             $ipconfig = $_SERVER["WINDIR"]."\system32\ipconfig.exe";            if(is_file($ipconfig)) {                @exec($ipconfig." /all", $this->result);            } else {                @exec($_SERVER["WINDIR"]."\system\ipconfig.exe /all", $this->result);                return $this->result;             }        }     } } ?>   

@exec("arp -a",$array); //执行arp -a命令，结果放到数组$array中        foreach($array as $value){            //匹配结果放到数组$mac_array            if(strpos($value,$_SERVER["REMOTE_ADDR"]) && preg_match("/(:?[0-9A-F]{2}[:-]){5}[0-9A-F]{2}/i",$value,$mac_array)){                $mac = $mac_array[0];                break;            }        }        echo $mac;