note 66731 deleted from ref.array by felipe

Note Submitter: php_spam at erif dot org 

----

Public domain, yadda yadda.  This is an extension of the assocSort below, patched up a bit.  Feedback would be wonderful.

<?php

  function assocMultiSort(&$array,$keys,$directions=true) {
    if (!is_array($array) || count($array) == 0) return true;
    if (!is_array($keys)) { $keys = Array($keys); }

    //we want "current" instead of necessarily the "zeroth" element; there may not be a zeroth element
    $test = current($array);

    $assocSortCompare = '';

    for ($i=0,$count=count($keys);$i<$count;$i++) {
      $key = $keys[$i];
      if (is_array($directions)) {
        $direction = $directions[$i];
      } else {
        $direction = $directions;
      }
      if ($i > 0) $assocSortCompare .= 'if ($retval != 0) return $retval; ';
      $assocSortCompare .= '$ax = $a["'.$key.'"]; $bx = $b["'.$key.'"];';

      //TODO -- if it's "blank", search up the list until we find something not blank
      if (is_numeric($test[$key]) || ($test[$key] == ((int)$test[$key]))) {
        if ($direction) {
          $assocSortCompare.= ' $retval = ($ax == $bx) ? 0 : (($ax < $bx) ? -1 : 1);';
        } else {
          $assocSortCompare.= ' $retval = ($ax == $bx) ? 0 : (($ax < $bx) ? 1 : -1);';
        }
      } else {
        if ($direction) {
          $assocSortCompare.= ' $retval = strcmp($ax,$bx);';
        } else {
          $assocSortCompare.= ' $retval = strcmp($bx,$ax);';
        }
      }
    }

    $assocSortCompare.= ' return $retval;';
    $assocSortCompare = create_function('$a,$b',$assocSortCompare);
    $retval = usort($array,$assocSortCompare);
    return $retval;
  }

?>