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    $array_php = true;
  12
  13    function ary_sort($ary,$col, $dir = 1){
  14       // The globals are used because USORT determines what is passed to comp2
  15       // These should be $this->col and $this->dir in a class
  16       // Would beat using globals
  17       if(!is_array($col)){
  18          $col = array("$col");
  19       }
  20       $GLOBALS["col"] = $col;  // Column or Columns as an array
  21       $GLOBALS["dir"] = $dir;  // Direction, a positive number for ascending a negative for descending
  22
  23       usort($ary,'comp2');
  24       return $ary;
  25   }
  26
  27   function comp2($a,$b,$i = 0) {
  28          global $col;
  29          global $dir;
  30          $c = count($col) -1;
  31          if ($a["$col[$i]"] == $b["$col[$i]"]){
  32             $r = 0;
  33             while($i < $c && $r == 0){
  34                $i++;
  35                $r = comp2($a,$b,$i);
  36             }
  37          } elseif($a["$col[$i]"] < $b["$col[$i]"]){
  38             $r = -1 * $dir; // Im not sure why you must * dir here, but it wont work just before the return...
  39          } else {
  40             $r = 1 * $dir;
  41          }
  42          return $r;
  43       }
  44
  45    function removeElement($array, $element) {
  46       $j = 0;
  47       for ($i = 0;$i < count($array);$i++)
  48          if ($i != $element) {
  49             $newArray[$j] = $array[$i];
  50             $j++;
  51          }
  52
  53       return $newArray;
  54    }
  55
  56   function array_cleave($array1, $column)
  57   {
  58     $key=0;
  59     $array2 = array();
  60     while ($key < count($array1)) {
  61         array_push($array2, $array1[$key]["$column"]);
  62         $key++;
  63     }
  64
  65     return ($array2);
  66   }
  67
  68 ?>