Linux, Apache, MySQL, PHP

//if the last time they access a page is longer than 5 mins (60x5 = 300)
if ($timenow - $lastactive > 300){
//user is logged out. 
//you could have a field isLoggedIn in database and set it to false
//redirect to login page
header("Location: loginpage.php");
} else {
//update database lastactive = $timenow for this user
//etc
...
}

<?php
 session_start(); /start the session
 $SESSION['testvar'] = "value1"; //set the session variable called "testvar" to the value "value1"
?>

<?php
 session_start(); /start the session
 echo $SESSION['testvar']; //print value saved in previous session
?>

<?php
 phpinfo();
?>

LazyDragonfist wrote:

You said i can go for Google script.Please explain me about it.

$host = 'localhost';
$user = 'mysqlUser';
$pass = 'myUserPass';
$db = 'myDatabase';
$table = 'products_info';
$file = 'export';

$link = mysql_connect($host, $user, $pass) or die("Can not connect." . mysql_error());
mysql_select_db($db) or die("Can not connect.");

$result = mysql_query("SHOW COLUMNS FROM ".$table."");
$i = 0;
if (mysql_num_rows($result) > 0) {
while ($row = mysql_fetch_assoc($result)) {
$csv_output .= $row['Field']."; ";
$i++;
}
}
$csv_output .= "\n";

$values = mysql_query("SELECT * FROM ".$table."");
while ($rowr = mysql_fetch_row($values)) {
for ($j=0;$j<$i;$j++) {
$csv_output .= $rowr[$j]."; ";
}
$csv_output .= "\n";
}

$filename = $file."_".date("Y-m-d_H-i",time());
header("Content-type: application/vnd.ms-excel");
header("Content-disposition: csv" . date("Y-m-d") . ".csv");
header( "Content-disposition: filename=".$filename.".csv");
print $csv_output;
exit;
?>