Get Time Ago in PHP

 //timeAgo Function
  public function timeAgo($time_ago){

   $time_ago = strtotime($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($seconds <= 60){
       return "just now";
   }
   //Minutes
   else if($minutes <=60){
       if($minutes==1){
           return "one minute ago";
       }
       else{
           return "$minutes minutes ago";
       }
   }
   //Hours
   else if($hours <=24){
       if($hours==1){
           return "an hour ago";
       }else{
           return "$hours hrs ago";
       }
   }
   //Days
   else if($days <= 7){
       if($days==1){
           return "yesterday";
       }else{
           return "$days days ago";
       }
   }
   //Weeks
   else if($weeks <= 4.3){
       if($weeks==1){
           return "a week ago";
       }else{
           return "$weeks weeks ago";
       }
   }
   //Months
   else if($months <=12){
       if($months==1){
           return "a month ago";
       }else{
           return "$months months ago";
       }
   }
   //Years
   else{
       if($years==1){
           return "one year ago";
       }else{
           return "$years years ago";
       }
   }
  }