1
cesser
Displaying the difference in time between two dates...?
  • 2004/12/12 16:05

  • cesser

  • Just popping in

  • Posts: 26

  • Since: 2004/3/21


Hi all

I was wondering how I would go about extrapolating the actual day and minutes differences between two dates? I am currently using the last_login variable in a block which I am only displaying as an absolute date (ie 2004/12/2).

How could I expand that to display last logged in "2 days, 47 minutes ago..."? I don't know what the variable is for current time, which I'm sure would be needed to figure out the difference. Assuming I know that, how can days and minutes be returned?

Thanks in advance for any help.

2
Dave_L
Re: Displaying the difference in time between two dates...?
  • 2004/12/12 16:31

  • Dave_L

  • XOOPS is my life!

  • Posts: 2277

  • Since: 2003/11/7


If $last_login is a Unix timestamp (seconds since 1970-01-01 00:00:00 GMT):

$seconds_ago = time() - $last_login;
$days_ago = floor($seconds_ago / (24 * 3600));
$rmdr = $seconds_ago % (24 * 3600);
$hours_ago = floor($rmdr / 3600);
$rmdr = $rmdr % 3600;
$minutes_ago = floor($rmdr / 60);

echo "Last login was $days_ago days, $hours_ago hours, $minutes_ago minutes ago.\n";

3
ackbarr
Re: Displaying the difference in time between two dates...?

we had a similar problem when developing xhelp - our helpdesk application. We created a custom function to take the difference between two times and break it down into units:

The function is used like this:
//Assumes that original time is stored in $time2

//Get Current TimeStamp
$time1 time();

//Get Number of elapsed seconds
$elapsed $time1 $time2;

$elapsed xhelpGetElaspedTime($elapsed);
//Now $elapsed is an array:
// $elasped['years'] contains the number of years
// $elapsed['weeks'] contains the number of weeks
// $elapsed['days'] contains the number of days
// $elapsed['hours'] contains the number of hours
// $elapsed['minutes'] contains the number of minutes
// $elapsed['seconds'] contains the number of seconds


And the function is defined like so:
function xhelpGetElapsedTime($time)
{    
    
//Define the units of measure
    
$units = array('years' => (365*60*60*24/*Value of Unit expressed in seconds*/,
        
'weeks' => (7*60*60*24),
        
'days' => (60*60*24),
        
'hours' => (60*60),
        
'minutes' => 60,
        
'seconds' => 1);
    
    
$local_time   $time;  
    
$elapsed_time = array();
    
    
//Calculate the total for each unit measure
    
foreach($units as $key=>$single_unit) {
        
$elapsed_time[$key] = floor($local_time $single_unit);
        
$local_time -= ($elapsed_time[$key] * $single_unit);
    }
    
    return 
$elapsed_time;
}

4
ackbarr
Re: Displaying the difference in time between two dates...?

should you decide to utilize this function, please change its name so that it is not prefixed with 'xhelp' - that way if you install xhelp later there is no chance for a conflict.

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