<?php
   /**
    **  array.php
    **
    **  This contains functions that work with array manipulation.  They
    **  will help sort, and do other types of things with arrays
    **
    **  $Id$
    **/

   $array_php = true;

   function ary_sort($ary,$col, $dir = 1){
      // The globals are used because USORT determines what is passed to comp2
      // These should be $this->col and $this->dir in a class
      // Would beat using globals
      if(!is_array($col)){
         $col = array($col);
      }
      $GLOBALS['col'] = $col;  // Column or Columns as an array
      $GLOBALS['dir'] = $dir;  // Direction, a positive number for ascending a negative for descending

      usort($ary,'comp2');
      return $ary;
  }

  function comp2($a,$b,$i = 0) {
         global $col;
         global $dir;
         $c = count($col) -1;
         if ($a[$col[$i]] == $b[$col[$i]]){
            $r = 0;
            while($i < $c && $r == 0){
               $i++;
               $r = comp2($a,$b,$i);
            }
         } elseif($a[$col[$i]] < $b[$col[$i]]){
            $r = -1 * $dir; // Im not sure why you must * dir here, but it wont work just before the return...
         } else {
            $r = 1 * $dir;
         }
         return $r;
      }

   function removeElement($array, $element) {
      $j = 0;
      for ($i = 0;$i < count($array);$i++)
         if ($i != $element) {
            $newArray[$j] = $array[$i];
            $j++;
         }

      return $newArray;
   }

  function array_cleave($array1, $column)
  {
    $key=0;
    $array2 = array();
    while ($key < count($array1)) {
        array_push($array2, $array1[$key][$column]);
        $key++;
    }

    return ($array2);
  }

?>