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     **/
   9
  10    $array_php = true;
  11
  12    function ary_sort($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       $GLOBALS["dir"] = $dir;  // Direction, a positive number for ascending a negative for descending
  21
  22       usort($ary,comp2);
  23       return $ary;
  24   }
  25
  26   function comp2($a,$b,$i = 0) {
  27          global $col;
  28          global $dir;
  29          $c = count($col) -1;
  30          if ($a["$col[$i]"] == $b["$col[$i]"]){
  31             $r = 0;
  32             while($i < $c && $r == 0){
  33                $i++;
  34                $r = comp2($a,$b,$i);
  35             }
  36          } elseif($a["$col[$i]"] < $b["$col[$i]"]){
  37             $r = -1 * $dir; // Im not sure why you must * dir here, but it wont work just before the return...
  38          } else {
  39             $r = 1 * $dir;
  40          }
  41          return $r;
  42       }
  43
  44    function removeElement($array, $element) {
  45       $j = 0;
  46       for ($i = 0;$i < count($array);$i++)
  47          if ($i != $element) {
  48             $newArray[$j] = $array[$i];
  49             $j++;
  50          }
  51
  52       return $newArray;
  53    }
  54 ?>