我开发了一个排名系统。我得到了以下数组:
[1] => Array
(
[botarin - Branding und Kommunikation] => 1
[Raiffeisen Kredit 2 Go] => 2
)
[2] => Array
(
[Kindersteckdosen] => 1
[Surf lieber mit bob] => 1
[Lafarge Imageinserate] => 1
[MCG Messecongress Graz Inserate] => 1
)
1,2是类别id,然后是项目名称和每个项目的投票数量。我如何对数组进行排序,因此类别ID保持这样排序,但项目名称按投票数下降排名?
任何想法?
提前感谢!
答案 0 :(得分:3)
// $full_array is your array of category ID's with projects/votes as nested arrays
foreach ($full_array as $cat_id => $projects) {
asort($projects, SORT_NUMERIC);
$full_array[$cat_id] = $projects;
}
// Each category ID within $full_array is now sorted
答案 1 :(得分:0)
迭代数组。对于每个子数组,请使用asort
答案 2 :(得分:0)
要按降序排序,请使用arsort();
$a = array( "a" => 2 );
arsort( $a );
print_r( $a );