$data[5] = array('volume' => 67, 'edition' => 2);
$data[4] = array('volume' => 86, 'edition' => 1);
$data[2] = array('volume' => 85, 'edition' => 6);
$data[3] = array('volume' => 98, 'edition' => 2);
$data[1] = array('volume' => 86, 'edition' => 6);
$data[6] = array('volume' => 67, 'edition' => 7);
// 准备要排序的数组
foreach ($data as $k => $v) {
  $edition[] = $v['edition'];
}
array_multisort($edition, SORT_ASC, $data);
print_r($data);

Array
(
  [0] => Array
    (
      [volume] => 86
      [edition] => 1
    )

  [1] => Array
    (
      [volume] => 67
      [edition] => 2
    )

  [2] => Array
    (
      [volume] => 98
      [edition] => 2
    )

  [3] => Array
    (
      [volume] => 85
      [edition] => 6
    )

  [4] => Array
    (
      [volume] => 86
      [edition] => 6
    )

  [5] => Array
    (
      [volume] => 67
      [edition] => 7
    )

)

/**
* 根据数组中的某个键值大小进行排序，仅支持二维数组
* 
* @param array $array 排序数组
* @param string $key 键值
* @param bool $asc 默认正序
* @return array 排序后数组
*/
function arraySortByKey(array $array, $key, $asc = true) 
{
  $result = array();
  // 整理出准备排序的数组
  foreach ( $array as $k => &$v ) {
    $values[$k] = isset($v[$key]) ? $v[$key] : '';
  }
  unset($v);
  // 对需要排序键值进行排序
  $asc ? asort($values) : arsort($values);
  // 重新排列原有数组
  foreach ( $values as $k => $v ) {
    $result[$k] = $array[$k];
  }
 
  return $result;
}