Linux Email on Login.

<?php

//exit();
$email = "your@email.tld";
$fromEmail = "from@email.tld";

$filename = "/tmp/login.".time().".temp";

exec("cat /var/log/auth.log | grep 'Accepted password for ' > ".$filename);
$file = file_get_contents($filename);
$last = trim(file_get_contents('/tmp/lastlog.log'));
$file = explode("\n",$file);

$i = 0;
$proccess = 0;
foreach ($file as $k => $v) {

if ($proccess == 1) {
        $v2 = explode($findme, $v);
        $ex = explode(" ",$v2[1]);
        $login[$i]['ip'] = $ex[2];
        $login[$i]['user'] = $ex[0];
        $login[$i]['line'] = $v;
$i++;
}
if (trim($v) == $last) {
        $proccess = 1;
}
}
//var_dump($blline);
$line = $login[($i-1)]['line'];
if ($line) {
file_put_contents("/tmp/lastlog.log", $line);
}

foreach ($login as $k => $v) {
/*foreach ($v['ip'] as $k2 => $v2) {
$emailtext .= "Login from $v2 <br />\n";
}*/
$emailtext .= "Login:
User: ".$login[$k]['user']."
IP: ".$login[$k]['ip']."
Hostname: ".gethostbyaddr($login[$k]['ip'])."
Line: ".$login[$k]['line']."
-----------------------------

";
}

//echo $emailtext;

if ($i != 0) {
mail($email, "SHH Login - ".date('G:i:s j/m/Y'), str_replace("\n", "<br />\n", $emailtext), "From: ".$fromEmail."\r\nContent-type: text/html; charset=iso-8859-1\r\n");
}
unlink($filename);
?>