php一维二维数组键排序方法实例总结

/**
???? * 冒泡排序 (一维数组)(二维数组某个健排序)
???? * 两两比较待排序数据元素的大小,直到没有反序的数据元素为止
???? * 设想被排序的数组R[1..N] 垂直竖立,就使其向上"漂浮".如此反复进行.
???? * 直到最后任何两个气都是轻者在上,重者在下为止.
?*/
function bubble_sort($array,$key=null) {
??????? $count = count($array);
??????? if($count < 0) {
??????????? return false;
??????? }
??????? for($i = 0; $i < $count; $i++) {
??????????? for($j = $count - 1; $j > $i; $j--) {
??????????????? if($key && isset($array[$key])){//二维数组健存在
??????????????????? if($array[$j][$key] < $array[$j - 1][$key]) {
??????????????????????? $tmp = $array[$j];
??????????????????????? $array[$j] = $array[$j - 1];
??????????????????????? $array[$j - 1] = $tmp;
??????????????????? }
??????????????? }else{ //一维数组
??????????????????? if($array[$j] < $array[$j - 1]) {
??????????????????????? $tmp = $array[$j];
??????????????????????? $array[$j] = $array[$j - 1];
??????????????????????? $array[$j - 1] = $tmp;
??????????????????? }
??????????????? }
??????????? }
??????? }
??????? return $array;
}

$data[] = array('volume' => 67,'edition' => 2);
$data[] = array('volume' => 86,'edition' => 1);
$data[] = array('volume' => 85,'edition' => 6);
$data[] = array('volume' => 98,'edition' => 6);
$data[] = array('volume' => 67,'edition' => 7);
?
// 取得列的列表
foreach ($data as $key => $row) {
??? $volume[$key]? = $row['volume'];
??? $edition[$key] = $row['edition'];
}
?
// 将数据根据 volume 降序排列,根据 edition 升序排列
// 把 $data 作为最后一个参数,以通用键排序
array_multisort($volume,SORT_DESC,$edition,SORT_ASC,$data);
print_r($data);

Array
(
??? [0] => Array
??????? (
??????????? [volume] => 98
??????????? [edition] => 2
??????? )
??? [1] => Array
??????? (
??????????? [volume] => 86
??????????? [edition] => 1
??????? )
??? [2] => Array
??????? (
??????????? [volume] => 86
??????????? [edition] => 6
?????????
??? [3] => Array
??????? (
??????????? [volume] => 85
??????????? [edition] => 6
??????? )
??? [4] => Array
??????? (
??????????? [volume] => 67
??????????? [edition] => 2
??????? )
??? [5] => Array
??????? (
??????????? [volume] => 67
??????????? [edition] => 7
??????? )
)