[Format 2 dates into a range string] #php

any.php

<?php
/**
 * Format start/end dates of a range for printing to the screen.
 * ex: "April 11 - 18, 2011" or "December 29, 2011 - January 3, 2012"
 *
 * @param DateTime $start : start of the range
 * @param DateTime $end   : end of the range
 * @return string         : the formatted string
 */
function mnnshow_format_date_range($start, $end){
  if ($start->format('Y') == $end->format('Y') && $start->format('m') == $end->format('m')) {
    return $start->format('F j - ').$end->format('j, ').$start->format('Y');
  }
  elseif ($start->format('Y') == $end->format('Y')) {
    return $start->format('F j - ').$end->format('F j, ').$start->format('Y');
  }
  else {
    return $start->format('F j, Y - ').$end->format('F j, Y');
  }
}