<?php
   /**
    ** array.php
    **
    **  Copyright (c) 1999-2001 The Squirrelmail Development Team
    **  Licensed under the GNU GPL. For full terms see the file COPYING.
    **
    ** This contains functions that work with array manipulation.  They
    ** will help sort, and do other types of things with arrays
    **
    **  $Id$
    **/


   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'] = $col;  // Column or Columns as an array
      if ($dir > 0)
          $dir = 1;
      else
          $dir = -1;
      $GLOBALS['dir'] = $dir;  // Direction, a positive number for ascending a negative for descending

      usort($ary,'array_comp2');
      return $ary;
  }

  function array_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]]){
            return (- $dir);
         } 
	 return $dir;
      }

   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);
  }

?>