How to get mac address in php

Obtaining the client's mac address is a very useful function, because it is an immutable unique identifier of the client. It is useless to change the IP or clear the local records.

So to obtain the mac address, you often need to use the one-machine-one activation code when purchasing software. Each machine can only be registered once for website registration, etc.

In the development of e-commerce systems, a common function is: users add products to the shopping cart without logging in, and the shopping cart data is automatically synchronized after logging in. .

To solve this problem, we usually use COOKIE or SESSION. In fact, you can also obtain the client's mac address as a unique identifier and store it in the database, and then match it after successful login. (Recommended learning: PHP video tutorial)

The MAC address is used to uniquely identify a network card in the network. If a device has one or more network cards, each Each network card is required and will have a unique MAC address.

Such methods are often used in the cloud in the era of big data.

The code compiled online is as follows:

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; 
?>

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