Sorting Class

sorting_class.php

<?php
class sorter {

   private $_array = array();

   function __construct($array) {
      $this->_array = $array;
   }

   public function do_sort_size(){
      usort ($this->_array, array('sorter','sort_size'));
      return $this->_array;
   }

   public function do_sort_numeric(){
      usort ($this->_array, array('sorter','sort_numeric'));
      return $this->_array;
   }

   public function do_sort_text(){
      usort ($this->_array, array('sorter','sort_text'));
      return $this->_array;
   }
   /* public function elaborate() {
      if (preg_match("~([0-9]+|[0-9])~", $this->_array[0])) {
         usort ($this->_array, array('sorter','sort_numeric'));
      }
      else {
         if (preg_match("~(?=^(X)(?=(L)$))|(?=^(L)$)|(?=^(M)$)~", $this->_array[0])) {
            usort ($this->_array, array('sorter','sort_size'));
         }
         else {
            usort ($this->_array, array('sorter','sort_text'));
         }
      }
      return $this->_array;
   } */

   protected static function sort_numeric($a, $b) {
      return $a - $b;
   }

   protected static function sort_size($a, $b) {
      static $sizes = array('2XS', 'XS', 'S', 'M', 'L', 'XL', '2XL');

      $asize = 100;
      $apos = -1;
      $bsize = 100;
      $bpos = -1;
      foreach ($sizes AS $val => $str) {
         if (($pos = strpos($a, $str)) !== FALSE && ($apos < 0 || $pos < $apos)) {
            $asize = $val;
            $apos = $pos;
         }
         if (($pos = strpos($b, $str)) !== FALSE && ($bpos < 0 || $pos < $bpos)) {
            $bsize = $val;
            $bpos = $pos;
         }
      }

      return ($asize == $bsize ? 0 : ($asize > $bsize ? 1 : -1));
   }

   protected static function sort_text($a, $b) {
      static $sizes = array("extra small","small","quite small?","something a bit too small","you surely don't fit there.","medium","big","very big","huge","enormous!");

      $asize = 100;
      $apos = -1;
      $bsize = 100;
      $bpos = -1;
      foreach ($sizes AS $val => $str) {
         if (($pos = strpos($a, $str)) !== FALSE && ($apos < 0 || $pos < $apos)) {
            $asize = $val;
            $apos = $pos;
         }
         if (($pos = strpos($b, $str)) !== FALSE && ($bpos < 0 || $pos < $bpos)) {
            $bsize = $val;
            $bpos = $pos;
         }
      }

      return ($asize == $bsize ? 0 : ($asize > $bsize ? 1 : -1));
   }
}
?>