Heim  >  Artikel  >  Backend-Entwicklung  >  二维数组按值排序

二维数组按值排序

WBOY
WBOYOriginal
2016-06-06 20:11:201170Durchsuche

<code>//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'),
    );</code>
<code>//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'),
    );</code>

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:

<code>usort($statementsample,function($a,$b){
    return (int)substr($a['id'],8)>(int)substr($b['id'],8);
            });</code>

回复内容:

<code>//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'),
    );</code>
<code>//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'),
    );</code>

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:

<code>usort($statementsample,function($a,$b){
    return (int)substr($a['id'],8)>(int)substr($b['id'],8);
            });</code>

<code>function my_sort($a,$b)
{
    $a = explode('-',$a['id'])[1];
    $b = explode('-',$b['id'])[1];
    if ($a==$b) return 0;
    return ($a</code>

使用usort 方法比较灵活。

array_multisort() 函数 示例如下

<code>$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);</code>
Stellungnahme:
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn