通过PHP中的多个键对多维数组进行排序
array_multisort函数可用于基于多个键对多维数组进行排序-
示例
$my_list = array(
array('ID' => 1, 'title' => 'data one', 'event_type' => 'one'),
array('ID' => 2, 'title' => 'data two', 'event_type' => 'zero'),
array('ID' => 3, 'title' => 'data three', 'event_type' => 'one'),
array('ID' => 4, 'title' => 'data four', 'event_type' => 'zero')
);
# The list of sorted columns and their data can be obtained. This will be passed to the array_multisort function.
$sort = array();
foreach($my_list as $k=>$v) {
$sort['title'][$k] = $v['title'];
$sort['event_type'][$k] = $v['event_type'];
}
# It is sorted by event_type in descending order and the title is sorted in ascending order.
array_multisort($sort['event_type'], SORT_DESC, $sort['title'], SORT_ASC,$my_list);对于PHP版本5.5.0-
array_multisort(array_column($my_list, 'event_type'), SORT_DESC, array_column($my_list, 'title'), SORT_ASC, $my_list);
输出结果
这将产生以下输出-
array (
0 =>
array (
'ID' => 4,
'title' => 'data four',
'event_type' => 'zero',
),
1 =>
array (
'ID' => 3,
'title' => 'data two',
'event_type' => 'zero',
),
2 =>
array (
'ID' => 1,
'title' => 'data one',
'event_type' => 'one',
),
3 =>
array (
'ID' => 2,
'title' => 'data three',
'event_type' => 'one',
),
)