Ordinal Suffix 03.30.2018

A PHP function to add an ordinal suffix to a number.

 function addOrdinalNumberSuffix($num) {
    if (!in_array(($num % 100),array(11,12,13))){
      switch ($num % 10) {
        // Handle 1st, 2nd, 3rd
        case 1:  return $num.'st';
        case 2:  return $num.'nd';
        case 3:  return $num.'rd';
      }
    }
    return $num.'th';
  }
// DOES NOT CONFIRM THAT THIS IS IN FACT A NUMBER. BE CAREFUL.