Question

i want to refresh page or redirect page after 4 mints to new url every time it refresh or redirect
Example some thing like this

$i=1
while($i = 100){
 //** Now URL redirect here 
$url="u_pc_change.php?id=$i";
echo '<meta http-equiv="refresh" content="2;url='.$url.'">';
$i++;
 }

some code which wait here for 4mints and redirect or refresh the page to new url like

u_pc_change.php?id=1
u_pc_change.php?id=2
u_pc_change.php?id=3

Above code will not work because it do fast loop and nothing will wait for 4 mints … i need a way to wait 4 mints before 2nd loop happen …. for refresh or redirect.

Answer 1

If you want to wait 4 minutes, you can use JS like this:

<script>setTimeout(function() { document.location='your_desired_location';},1000 * 60 * 4);</script>

If I understand you correctly, you want to show something different every 4 minutes regardless if user refreshed page, left and returned, or just stayed on page for 4 minutes.

You can save user refresh time and check it next time.

session_start();
if( !isset($_SESSION['lastRefresh']) ) $_SESSION['lastRefresh'] = time(); //User is here for first time
else {        
    if( time() - $_SESSION['lastRefresh']  > 60 * 4 )//Show something else
    {
      $_SESSION['lastRefresh'] = time();//This is in if, so "timer" won't reset if user refresh before 4 minutes.
    }
}