php获取服务器端mac和客户端mac的地址支持WIN/LINUX

<?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 $result = array(); // 返回带有MAC地址的字串数组 
var $macAddr; 
/*构造*/ 
function __construct($osType){ 
switch ( strtolower($osType) ){ 
case "unix": break; 
case "solaris": break; 
case "aix": break; 
case "linux": { 
$this->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;