PHP倒计时到期按钮或链接

Question

I'm trying to create a button or link that will expire after 1 hour.

I'm setting the time the visitor hit the page with a cookie.

Most of the code examples I have seen only give the time that has passed and not the time left.

example: Link will expire in 0 hours, 30, mins and 34 seconds

This is just some rough code :

//Setting cookie example
setcookie('previous_time', time(), time()+3600*1);


$current_time = time();
$previous_time = $_COOKIE['previous_time'];

$time_diff = $current_time-$previous_time;

This is where I'm stuck, I have no idea how to convert the $time_diff timestamp into a format like "expire in 0 hours, 30, mins and 34 seconds"

Many thanks.

Answer 1

To format your time difference, just do some math, since your $time_diff is just the number of seconds between the two times:

$hours    = floor( $time_diff / 3600);
$minutes  = floor( ($time_diff / 60) % 60); 
$seconds  = $time_diff % 60;

echo "$hours hours, $minutes minutes, $seconds seconds
";

So, a value of 20712 would produce :

5 hours, 45 minutes, 12 seconds