二维数组按值排序
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2022-04-21 07:53:07
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//排序前
$arr = array(
0 => array('id' => 'C160001-12'),
1 => array('id' => 'C160001-10'),
2 => array('id' => 'C160001-11'),
3 => array('id' => 'C160001-4'),
4 => array('id' => 'C160001-6'),
5 => array('id' => 'C160001-3'),
6 => array('id' => 'C160001-2'),
7 => array('id' => 'C160001-5'),
8 => array('id' => 'C160001-0'),
9 => array('id' => 'C160001-8'),
10 => array('id' => 'C160001-1'),
11 => array('id' => 'C160001-9'),
12 => array('id' => 'C160001-7'),
);
//排序后
$arr = array(
0 => array('id' => 'C160001-0'),
1 => array('id' => 'C160001-1'),
2 => array('id' => 'C160001-2'),
3 => array('id' => 'C160001-3'),
4 => array('id' => 'C160001-4'),
5 => array('id' => 'C160001-5'),
6 => array('id' => 'C160001-6'),
7 => array('id' => 'C160001-7'),
8 => array('id' => 'C160001-8'),
9 => array('id' => 'C160001-9'),
10 => array('id' => 'C160001-10'),
11 => array('id' => 'C160001-11'),
12 => array('id' => 'C160001-12'),
);
求大神解答排序算法!
---------------------------------------华丽的分割线------------------------------------------
虽然楼下给出了答案,但是本人的另一位朋友又给出了一种更简便直观的方法,如下:
usort($statementsample,function($a,$b){
return (int)substr($a['id'],8)>(int)substr($b['id'],8);
});
回复内容:
//排序前
$arr = array(
0 => array('id' => 'C160001-12'),
1 => array('id' => 'C160001-10'),
2 => array('id' => 'C160001-11'),
3 => array('id' => 'C160001-4'),
4 => array('id' => 'C160001-6'),
5 => array('id' => 'C160001-3'),
6 => array('id' => 'C160001-2'),
7 => array('id' => 'C160001-5'),
8 => array('id' => 'C160001-0'),
9 => array('id' => 'C160001-8'),
10 => array('id' => 'C160001-1'),
11 => array('id' => 'C160001-9'),
12 => array('id' => 'C160001-7'),
);
//排序后
$arr = array(
0 => array('id' => 'C160001-0'),
1 => array('id' => 'C160001-1'),
2 => array('id' => 'C160001-2'),
3 => array('id' => 'C160001-3'),
4 => array('id' => 'C160001-4'),
5 => array('id' => 'C160001-5'),
6 => array('id' => 'C160001-6'),
7 => array('id' => 'C160001-7'),
8 => array('id' => 'C160001-8'),
9 => array('id' => 'C160001-9'),
10 => array('id' => 'C160001-10'),
11 => array('id' => 'C160001-11'),
12 => array('id' => 'C160001-12'),
);
求大神解答排序算法!
---------------------------------------华丽的分割线------------------------------------------
虽然楼下给出了答案,但是本人的另一位朋友又给出了一种更简便直观的方法,如下:
usort($statementsample,function($a,$b){
return (int)substr($a['id'],8)>(int)substr($b['id'],8);
});
function my_sort($a,$b)
{
$a = explode('-',$a['id'])[1];
$b = explode('-',$b['id'])[1];
if ($a==$b) return 0;
return ($a
使用usort 方法比较灵活。
array_multisort() 函数 示例如下
$data[] = array('volume' => 67, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 1);
$data[] = array('volume' => 85, 'edition' => 6);
$data[] = array('volume' => 98, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 6);
$data[] = array('volume' => 67, 'edition' => 7);
$type = array();
foreach ($data as $key => $value) {
$type[] = $value['edition'];
}
array_multisort($type, SORT_ASC, $data);
var_dump($data);