php數組排序函數array

編程過程中，如果有需要對某個數組根據某個字段來排序 ，可以用array_multisort函數，很實用。
實例：

$data = array(array("id" => 1, "name" => "Boney M", "rating" => 3),
array("id" => 2, "name" => "Take That", "rating" => 1),
array("id" => 3, "name" => "The Killers", "rating" => 4),
array("id" => 4, "name" => "Lusain", "rating" => 3),
);
foreach ($data as $key => $value) {
  $name[$key] = $value['name'];
  $rating[$key] = $value['rating'];
}
print_r($data);
array_multisort($rating, $name,SORT_DESC, $data);
print_r($data);

這裡表示先按$rating的倒序排 如果一樣 再按$name 的倒序排 SORT_DESC這個參數表示排序的形式····