PHP随机洗牌数组维护重点= GT;值 [英] PHP Random Shuffle Array Maintaining Key => Value

问题描述

我一直在寻找对谷歌的答案，但似乎无法找到的东西防呆和真的不能负担搞砸了（去住到生产站点）。

我已经是20+的过滤器，它返回一个数组，包括一个ID和一个距离的高级搜索。我需要做的就是洗牌这些结果随机顺序，每次显示。这该阵列我有，在目前出来的是：

 阵列（
    [0] =＆GT;阵列（[ID] =＆GT; 1 [距离] =＆GT; 1.95124994507577）
    [1] =＆GT;阵列（[ID] =＆GT; 13 [距离] =＆GT; 4.75358968511882）
    [2] =＆GT;阵列（[ID] =大于7 [距离] =＆GT; 33.2223233233323）
    [3] =＆GT;阵列（[ID] =＆GT; 21 [距离] =＆GT; 18.2155453552336）
    [4] =＆GT;阵列（[ID] =＆GT; 102 [距离] = 221.2212587899658）
）
 

我需要什么，能够做的就是随机化或这些每一次订单，但保持ID和距离对，即：

 阵列（
    [4] =＆GT;阵列（[ID] =＆GT; 102 [距离] = 221.2212587899658）
    [1] =＆GT;阵列（[ID] =＆GT; 13 [距离] =＆GT; 4.75358968511882）
    [3] =＆GT;阵列（[ID] =＆GT; 21 [距离] =＆GT; 18.2155453552336）
    [2] =＆GT;阵列（[ID] =大于7 [距离] =＆GT; 33.2223233233323）
    [0] =＆GT;阵列（[ID] =＆GT; 1 [距离] =＆GT; 1.95124994507577）
）
 

感谢：）

解决方案

网友发帖 随机 文档下：

  

随机播放和联想
  非关联数组，而preserving
  键，值对。也返回
  洗牌数组，而不是它的洗牌
  到位。

 函数shuffle_assoc（$名单）{
  如果返回$列表（is_array（$名单）！）;  $键= array_keys（$清单）;
  洗牌（$键）;
  $随机=阵列（）;
  的foreach（$键为$键）{
    $随机[$关键] = $名单[$关键];
  }
  返回$随机的;
}
 

测试用例：

  $ ARR =阵列（）;
$常用3 [] =阵列（'ID'=＆GT; 5，'富'=＆GT;'你好'）;
$常用3 [] =阵列（'ID'=大于7，'富'=＆GT;'BYEBYE'）;
$常用3 [] =阵列（'ID'=＆GT; 9，'富'=＆GT;'富'）;
的print_r（shuffle_assoc（$ ARR））;
的print_r（shuffle_assoc（$ ARR））;
的print_r（shuffle_assoc（$ ARR））;
 

I've been looking on google for the answer but can't seem to find something fool-proof and cant really afford to mess this up (going live into a production site).

What I have is an advanced search with 20+ filters, which returns an array including an ID and a Distance. What I need to do is shuffle these results to display in a random order every time. The array I have that comes out at the moment is:

Array (
    [0] => Array ( [id] => 1 [distance] => 1.95124994507577 )
    [1] => Array ( [id] => 13 [distance] => 4.75358968511882 )
    [2] => Array ( [id] => 7 [distance] => 33.2223233233323 )
    [3] => Array ( [id] => 21 [distance] => 18.2155453552336 )
    [4] => Array ( [id] => 102 [distance] = 221.2212587899658 )
)

What I need to be able to do is randomise or order of these every time but maintain the id and distance pairs, i.e.:

Array (
    [4] => Array ( [id] => 102 [distance] = 221.2212587899658 )
    [1] => Array ( [id] => 13 [distance] => 4.75358968511882 )
    [3] => Array ( [id] => 21 [distance] => 18.2155453552336 )
    [2] => Array ( [id] => 7 [distance] => 33.2223233233323 )
    [0] => Array ( [id] => 1 [distance] => 1.95124994507577 )
)

Thanks :)

解决方案

The first user post under the shuffle documentation:

Shuffle associative and non-associative array while preserving key, value pairs. Also returns the shuffled array instead of shuffling it in place.

function shuffle_assoc($list) { 
  if (!is_array($list)) return $list; 

  $keys = array_keys($list); 
  shuffle($keys); 
  $random = array(); 
  foreach ($keys as $key) { 
    $random[$key] = $list[$key]; 
  }
  return $random; 
} 

Test case:

$arr = array();
$arr[] = array('id' => 5, 'foo' => 'hello');
$arr[] = array('id' => 7, 'foo' => 'byebye');
$arr[] = array('id' => 9, 'foo' => 'foo');
print_r(shuffle_assoc($arr));
print_r(shuffle_assoc($arr));
print_r(shuffle_assoc($arr));

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