functions/array.php

   1 <?php
   2    /**
   3     * array.php
   4     *
   5     * This contains functions that work with array manipulation.  They
   6     * will help sort, and do other types of things with arrays
   7     *
   8     *  $Id$
   9     */
  10
  11
  12    function ary_sort($ary,$col, $dir = 1){
  13       // The globals are used because USORT determines what is passed to comp2
  14       // These should be $this->col and $this->dir in a class
  15       // Would beat using globals
  16       if(!is_array($col)){
  17          $col = array($col);
  18       }
  19       $GLOBALS['col'] = $col;  // Column or Columns as an array
  20       if ($dir > 0)
  21           $dir = 1;
  22       else
  23           $dir = -1;
  24       $GLOBALS['dir'] = $dir;  // Direction, a positive number for ascending a negative for descending
  25
  26       usort($ary,'array_comp2');
  27       return $ary;
  28   }
  29
  30   function array_comp2($a,$b,$i = 0) {
  31          global $col;
  32          global $dir;
  33          $c = count($col) -1;
  34          if ($a[$col[$i]] == $b[$col[$i]]){
  35             $r = 0;
  36             while($i < $c && $r == 0){
  37                $i++;
  38                $r = comp2($a,$b,$i);
  39             }
  40          } elseif($a[$col[$i]] < $b[$col[$i]]){
  41             return (- $dir);
  42          }
  43          return $dir;
  44       }
  45
  46    function removeElement($array, $element) {
  47       $j = 0;
  48       for ($i = 0;$i < count($array);$i++)
  49          if ($i != $element) {
  50             $newArray[$j] = $array[$i];
  51             $j++;
  52          }
  53
  54       return $newArray;
  55    }
  56
  57   function array_cleave($array1, $column)
  58   {
  59     $key=0;
  60     $array2 = array();
  61     while ($key < count($array1)) {
  62         array_push($array2, $array1[$key][$column]);
  63         $key++;
  64     }
  65
  66     return ($array2);
  67   }
  68
  69 ?>