<?php
if('sub') {

$client = $_SERVER['REMOTE_ADDR'];
$username="user";
$password="pass";
$database="db";
mysql_connect(localhost,$username,$password);
$time = strtotime("2 minutes");
$now = strtotime("now");
@mysql_select_db($database) or die( "Unable to select database");
$query = "SELECT Time FROM log WHERE IP='$client'";
$result= mysql_query($query);
$num=mysql_num_rows($result);


while($rows=mysql_fetch_array($result)){
$timestamp = $rows['Time'];
}
echo n;
echo $now;
echo t;
echo $timestamp;


if($now < $timestamp)
{
echo "<center><h2 style="color:red" class="texts" id="homeLink">Please wait 2 minutes.</h2></center>";

}
else{
//some other code

$query1 = "INSERT INTO log VALUES ('$client','$time','$username')";
$query2 = "UPDATE `log` SET `Time`='$time' SET `Username`='$username' WHERE `IP`='$client'";

if($num == 0)
{
mysql_query($query1);
}
else
{
mysql_query($query2);
}

mysql_close();
}
?>

UPDATE `log` SET `Time`='$time' SET `Username`='$username' WHERE `IP`='$client'"

UPDATE `log` SET `Time`='$time', `Username`='$username' WHERE `IP`='$client'"