function dna_ordinal($number) {
 
  // e.g. echo dna_ordinal(92); will print '92nd'
 
  $ends = array('th','st','nd','rd','th','th','th','th','th','th');
   
  if ((($number % 100) >= 11) && (($number%100) <= 13)) {
 
    $output = $number . 'th';
 
  } else {
 
    $output = $number . $ends[$number % 10];
 
  }
 
  return $output;
 
}