我有一个多维数组，需要通过“列”对其进行排序，但保持其他列的组织[重复]

Question

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• How do I Sort a Multidimensional Array in PHP [duplicate] 11 answers

my array have this structure:

$news = array('id' => '', 'views' => '');

i need to order this by the most viewed, but it have to match the id. I've done some research but got many doubts.

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Answer 1

I'm having some trouble deciphering exactly what you mean with the question but here a couple of thinks that may work for you.

if your array is composed like

array(
      array("id"=>1, "views"=>50),
      array("id"=>3, "views"=>16)
);

Then you can use usort with a closure(php 5.3)

usort($news, function ($a, $b){ return $a["views"] - $b["views"]});

if you want it in descending order you can just swap the $a and $b in the closure

usort($news, function ($a, $b){ return $b["views"] - $a["views"]});

If you have an array that is composed like

array(
     "id"=>array(1,2),
     "views"=>array(50, 16)
);

Then you can use array_multisort

array_multisort($news["views"], $news["id"]);

or if you want it in descending order

array_multisort($news["views"], SORT_DESC, SORT_NUMERIC, $news["id"]);

UPDATE

The final solution.. news was an object with a views and id array properties. The final solution was:

array_multisort($news->views, $news->id);