The following function will convert the time stamp to time ago like 1hour ago, 1day ago, 2days ago etc.
PHP Code
<?php
function timeAgo($time_ago){
$cur_time = time();
$time_elapsed = $cur_time - $time_ago;
$seconds = $time_elapsed ;
$minutes = round($time_elapsed / 60 );
$hours = round($time_elapsed / 3600);
$days = round($time_elapsed / 86400 );
$weeks = round($time_elapsed / 604800);
$months = round($time_elapsed / 2600640 );
$years = round($time_elapsed / 31207680 );
// Seconds
if($seconds <= 60){
echo "$seconds seconds ago";
}
//Minutes
else if($minutes <=60){
if($minutes==1){
echo "one minute ago";
}
else{
echo "$minutes minutes ago";
}
}
//Hours
else if($hours <=24){
if($hours==1){
echo "an hour ago";
}else{
echo "$hours hours ago";
}
}
//Days
else if($days <= 7){
if($days==1){
echo "yesterday";
}else{
echo "$days days ago";
}
}
//Weeks
else if($weeks <= 4.3){
if($weeks==1){
echo "a week ago";
}else{
echo "$weeks weeks ago";
}
}
//Months
else if($months <=12){
if($months==1){
echo "a month ago";
}else{
echo "$months months ago";
}
}
//Years
else{
if($years==1){
echo "one year ago";
}else{
echo "$years years ago";
}
}
}
?>
Call in action
<?php
$curenttime="2013-07-10 09:09:09";
$time_ago =strtotime($curenttime);
echo timeAgo($time_ago);
?>
Output
11 years ago