Get Relative Time in PHP (e.g. '1 hour ago', 'yesterday', 'tomorrow', 'in 2 weeks'). With the argument $max_diff you can specify the number of days from when the actual date should be returned.

relative-time.php

<?php
/**
* Get Relative Time in PHP (e.g. '1 hour ago', 'yesterday', 'tomorrow', 'in 2 weeks').
* With the argument `$max_diff` you can specify the number of days from when the
* actual date should be returned witht the format of `$date_format`.
*
* Gist: https://gist.github.com/wottpal/61bc13425a8cedcd88666040d1449bfd
* Fork of: https://gist.github.com/mattytemple/3804571
*/


function relative_time($ts, $max_diff = false, $date_format = 'd/m/Y') {
  $max_is_set = $max_diff !== false;

  if(!ctype_digit($ts)) {
    $ts = strtotime($ts);
  }
  $diff = time() - $ts;
  if($diff == 0) {
    return 'now';
  } elseif($diff > 0) {
    $day_diff = floor($diff / 86400);
    if ($max_is_set && $day_diff > $max_diff) return date($date_format, $ts);

    if ($day_diff == 0) {
      if($diff < 60) return 'just now';
      if($diff < 120) return '1 minute ago';
      if($diff < 3600) return floor($diff / 60) . ' minutes ago';
      if($diff < 7200) return '1 hour ago';
      if($diff < 86400) return floor($diff / 3600) . ' hours ago';
    }
    if($day_diff == 1) return 'Yesterday';
    if($day_diff < 7) return $day_diff . ' days ago';
    if($day_diff < 31) return ceil($day_diff / 7) . ' weeks ago';
    if($day_diff < 60) return 'last month';
    return date('F Y', $ts);
    
  } else {
    $diff = abs($diff);
    $day_diff = floor($diff / 86400);
    if ($max_is_set && $day_diff > $max_diff) return date($date_format, $ts);

    if ($day_diff == 0) {
      if($diff < 120) { return 'in a minute'; }
      if($diff < 3600) { return 'in ' . floor($diff / 60) . ' minutes'; }
      if($diff < 7200) { return 'in an hour'; }
      if($diff < 86400) { return 'in ' . floor($diff / 3600) . ' hours'; }
    }
    if ($day_diff == 1) { return 'Tomorrow'; }
    if ($day_diff < 4) { return date('l', $ts); }
    if ($day_diff < 7 + (7 - date('w'))) { return 'next week'; }
    if(ceil($day_diff / 7) < 4) { return 'in ' . ceil($day_diff / 7) . ' weeks'; }
    if(date('n', $ts) == date('n') + 1) { return 'next month'; }
    return date('F Y', $ts);
  }
}


?>