PHP gets the computer's unique identifier [CPU, Nic]

The following is reproduced from the Internet source code, but I test can not be carried out, do not know how, turn around you can exchange

<?php
Get CPU information from your computer
function Onlyu () {
$a = ";
$b = Array ();
if (function_exists (' exec ')) {
if (Mailto:[email protected] (/all ", $b)) {
return false;
}
}elseif (function_exists (' system ')) {
Ob_start ();
if (Mailto:[email protected] (/all ")) {
return false;
}else{
//...
}
$b = Ob_get_contents ();
Ob_end_clean ();
$b = explode ("\ n", $b);//print_r ($b);
Array_pop ($b);
}else{
return false;
}
$all = sizeof ($b);
for ($i = 0; $i < $all; $i + +) {
if (Strpos ($b [$i], "Description")!== false) {
if (Strpos ($b [$i +1], "physical Address")!== false) {
$c = Explode (":", $b [$i +1]);
$a = Trim ($c [1]);
Break
}
}
}
return empty ($a) false: $a;
}
Get the address of the MAC for the NIC
function Getmac () {
@exec ("Ipconfig/all", $array);
for ($Tmpa; $Tmpa <count ($array); $Tmpa + +) {
if (eregi ("Physical", $array [$Tmpa])) {
$mac =explode (":", $array [$Tmpa]);
return $mac [1];
}
}
}
Echo Onlyu ();
Echo Getmac ();
?>

Get the address of the MAC for the NIC
<?php
Class Getmacaddr
{
var $return _array = Array (); Returns an array of strings with MAC addresses
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;
}
}
$mac = new Getmacaddr (php_os);
Echo $mac-mac_addr;
?>

PHP gets the computer's unique identifier [CPU, Nic]