This tutorial will show you how to display those cool last seen 2 days ago or posted 3 mins ago as seen on http://www.live-tutorials.com

Example
This tutorial was written 220 days ago

Steps :
1. In this example we assume that you stored your time using the time() function. If not, then you can easily use strtotime().
We will create a function to make the calculation.

function getDateDiff($age){ $timet = 3600*24; $days=floor($age/$timet); $hours=floor($age/3600); $minutes=floor($age/60); $seconds=$age; if ($days>0) $age ="$days days ago"; else if ($hours>0) $age ="$hours hr".(($hours>1)?"s":"")." ago"; else if ($minutes>0) $age ="$minutes min".(($minutes>1)?"s":"")." ago"; else $age ="$seconds sec".(($seconds>1)?"s":"")." ago"; return $age; }//EOF

The above function checks the time and see if it is a day ago, minute or second. If you know a little time calculation then it should be easy to figure out. We divide by 3600*24( seconds in a day ) to see if it more than a day.

Next we get the time we want to see the difference. The tutorial was written today ( April 28 2008 ) which stipped to time would be ( 1209358800 ). To get the date difference we must now subtract the past date from the current time. In our tutorial, the past date would be (April 28 2008).

The codes below shows you how to wrap it all together and display the x time ago.

$pastdate = 1209358800;//April 28 2008 $datedif = time()-$pastdate;//subtract the past date from the current time //now run the function echo getDateDiff($datedif);

That's it. Now let us put it all together.

function getDateDiff($age){ $timet = 3600*24; $days=floor($age/$timet); $hours=floor($age/3600); $minutes=floor($age/60); $seconds=$age; if ($days>0) $age ="$days days ago"; else if ($hours>0) $age ="$hours hr".(($hours>1)?"s":"")." ago"; else if ($minutes>0) $age ="$minutes min".(($minutes>1)?"s":"")." ago"; else $age ="$seconds sec".(($seconds>1)?"s":"")." ago"; return $age; }//EOF $pastdate = 1209358800;//April 28 2008 $datedif = time()-$pastdate;//subtract the past date from the current time //now run the function echo getDateDiff($datedif);

The result would be the following: This tutorial was written 220 days ago

 

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