请教一个PHP排序的问题
我要对数组进行数值排序，代码如下：
$a = array('a' => 10, 'z' => 10, 'c' => 10, 'b' => 11, 'd' => 10);
asort($a, SORT_NUMERIC);
var_dump($a);
打印结果如下：
array(5) {
'd' =>
int(10)
'a' =>
int(10)
'c' =>
int(10)
'z' =>
int(10)
'b' =>
int(11)
}
问题：
- 我需要对数值进行排序（已实现）
- 若数值相同，则数组键的顺序位置不改变，请问如何做到
举例：
上面的数组
$a = array('a' => 10, 'z' => 10, 'c' => 10, 'b' => 11, 'd' => 10);
根据上面排序后，键的顺序依次为
d => 10, a => 10, c => 10, z => 10, b => 11
我希望能实现的顺序为为
a => 10, z => 10, c => 10, d => 10, b => 11
克劳⑨⑨⑧
10 years, 3 months ago
Answers
function hasort($arr) {
$a = $b = array();
foreach($arr as $v => $k) $a[$k][] = $v;
ksort($a);
foreach($a as $v => $i)
foreach($i as $k) $b[$k] = $v;
return $b;
}
$a = array('a' => 10, 'z' => 10, 'c' => 10, 'b' => 11, 'd' => 10);
$a = hasort($a);
print_r($a);
/**
Array
(
[a] => 10
[z] => 10
[c] => 10
[d] => 10
[b] => 11
)
**/
中国杯具帝
answered 10 years, 3 months ago