How to get Mac Address using Php

I want to have mac address whenever any user visit my site by using any Php script adn it should get traced too, i asked my friends for the same they told me it's possible but they also don't know the code.I have try to find it over internet but didn't got any proper solution for it. Can anyone help me out with this issue.

I am not sure will the following code will work to find out Mac address for you.

PHP Code:

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<?php
$browser = get_browser(null, true);
print_r($browser);
?>

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where $browser['platform'] should hold the information.If you wan to trace Mac address of the user who visits you site you can also do it by using SMAC software. For downloading click here

Use the following code to get the mac address

PHP Code:

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// Get the arp executable path
$location = `which arp`;
// Execute the arp command and store the output in $arpTable
$arpTable = `$location`;
// Split the output so every line is an entry of the $arpSplitted array
$arpSplitted = split("\n",$arpTable);
// Get the remote ip address (the ip address of the client, the browser)
$remoteIp = $GLOBALS['REMOTE_ADDR'];
// Cicle the array to find the match with the remote ip address
foreach ($arpSplitted as $value) {
// Split every arp line, this is done in case the format of the arp
// command output is a bit different than expected
$valueSplitted = split(" ",$value);
foreach ($valueSplitted as $spLine) {
if (preg_match("/$remoteIp/",$spLine)) {
$ipFound = true;
}
// The ip address has been found, now rescan all the string
// to get the mac address
if ($ipFound) {
// Rescan all the string, in case the mac address, in the string
// returned by arp, comes before the ip address
// (you know, Murphy's laws)
reset($valueSplitted);
foreach ($valueSplitted as $spLine) {
if (preg_match("/[0-9a-f][0-9a-f][:-]".
"[0-9a-f][0-9a-f][:-]".
"[0-9a-f][0-9a-f][:-]".
"[0-9a-f][0-9a-f][:-]".
"[0-9a-f][0-9a-f][:-]".
"[0-9a-f][0-9a-f]/i",$spLine)) {
return $spLine;
}
}
}
$ipFound = false;
}
}
return false;
} 


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