ดึง MAC Address ออกมาใช้ทำไงครับ คืออยากรู้ MAC Address ของเครื่องแต่ละเครื่องที่ใช้งาน แล้วนำมาเก็บไว้ใน ฐานข้อมูลอ่ะครับ

/**
 * Class NtMacAddress
 *		Returns client or server Mac Address in an intranet NT5 or NT5.1 LAN
 * -----------------------------------------------
 * EXAMPLE:
 *		$mac = &new NtMacAddress();
 *		echo 'SERVER MAC: '.$mac->getMac( 'server' ).'<br />CLIENT MAC: '.$mac->getMac( 'client' );
 * 
 * NOTE: This class works only in a LAN then you will not read anything if try on localhost.
 *	 So please use from another PC.
 * _______________________________________________
 *
 * @author		Andrea Giammarchi
 * @compatibility	Windows 2000 / Server , Windows XP
 *			( but maybe found *nix and other OS client macaddress too )
 * @site		www.3site.it
 * @date		09/10/2004
 * @version	1.0	tested only on Win 2K / XP
 */
class NtMacAddress {

	/**
	 * Public method getMach. Returns client or server mac-address if is readable.
	 *
	 *		NtMacAddress->getMac( $what:String ):String
	 *
	 * @param	String		Options: 'client' or 'server'
	 * @return	String		Mac-Address if is readable, 'not found' otherwise
	 */
	function getMac( $what ) {
		$what = &strtolower( $what );
		if( $what == 'server' ) {
			return $this->__server_macaddress();
		}
		elseif( $what == 'client' ) {
			return $this->__client_macaddress();
		}
		else {
			return '\'client\' or \'server\' ?';
		}
	}

	/**
	 * Private method __server_macaddress. Returns server mac-address if is readable.
	 *
	 *		NtMacAddress->__server_macaddress():String
	 *
	 * @param	no
	 * @return	String		Server Mac-Address if is readable, 'not found' otherwise
	 */
	function __server_macaddress() {
		$output = Array();
		exec( 'netstat -r', $output );
		for( $a = 0, $b = &count( $output ); $a < $b; $a++ ) {
			if( preg_match( "/(?i)([a-z0-9]{2} ){6}/", $output[$a] ) == true ) {
				$macaddress = &$output[$a];
				$uniquekey = &md5( $macaddress );
				$output[$a] = &preg_replace( "/(?i)([^a-z0-9]*?)([a-z0-9]{2} ){6}/i", "\\1 {$uniquekey} ", $output[$a] );
				$output[$a] = &explode( " {$uniquekey} ", $output[$a] );
				$uniquekey = Array( trim( $output[$a][0] ), trim( $output[$a][1] ) );
				$macaddress = &str_replace( $uniquekey, "", $macaddress );
				return trim( $macaddress );
			}
		}
		return 'not found';
	}

	/**
	 * Private method __client_macaddress. Returns client mac-address if is readable.
	 *
	 *		NtMacAddress->__client_macaddress():String
	 *
	 * @param	no
	 * @return	String		Client Mac-Address if is readable, 'not found' otherwise
	 */
	function __client_macaddress() {
		$output = Array();
		exec( 'nbtstat -A '.$_SERVER['REMOTE_ADDR'], $output );
		$reg = '([a-f0-9]{2}\-){5}([a-f0-9]{2})';
		for( $a = 0, $b = &count( $output ); $a < $b; $a++ ) {
			if( preg_match( "/(?i){$reg}/", $output[$a] ) == true ) {
			        return preg_replace( "/(?iU)(.+)({$reg})(.*)/", "\\2", $output[$a] );
			}
		}
		return 'not found';
	}
}

<?
function __client_macaddress() {
$output = Array();
exec( 'nbtstat -A '.$_SERVER['REMOTE_ADDR'], $output );
$reg = '([a-f0-9]{2}\-){5}([a-f0-9]{2})';
for( $a = 0, $b = &count( $output ); $a < $b; $a++ ) {
if( preg_match( "/(?i){$reg}/", $output[$a] ) == true ) {
return preg_replace( "/(?iU)(.+)({$reg})(.*)/", "\\2", $output[$a] );
}
}
return 'not found';
}

?>

<?php
echo("".__client_macaddress());
?>

                // Turn on output buffering
                ob_start();
                //Get the ipconfig details using system commond
                system('ipconfig /all');

                // Capture the output into a variable
                $mycom=ob_get_contents();
                // Clean (erase) the output buffer
                ob_clean();

                $findme = "Physical";
                //Search the "Physical" | Find the position of Physical text
                $pmac = strpos($mycom, $findme);

                // Get Physical Address
                $mac=substr($mycom,($pmac+36),17);
                //Display Mac Address
                echo "MAC4 : ".$mac;