PHP Get week range

Get week starting and ending dates

<?php
function return_week_range($week, $year)
{
  if (strlen($week) < 2)
  {
    $week = '0' . $week;
  }
  $week_timestamp = strtotime($year . 'W' . $week);
  $week_start = date('d-m-Y', strtotime('this week monday', $week_timestamp));
  $week_end = date('d-m-Y', strtotime('this week sunday', $week_timestamp));

  return array(date('d', strtotime($week_start)), date('d.m.Y', strtotime($week_end)), date('Y-m-d', strtotime($week_start)), date('Y-m-d', strtotime($week_end)));
}
?>