如何从多维数组

删除重复值，我有数组这样的数组：如何从多维数组

Array 
(
    [userId] => 35 
    [fieldId] => Array 
     (
      [0] => 1 
      [1] => 2 
      [2] => 3 
      [3] => 1 
      [4] => 2 
      [5] => 2 
      [6] => 1 
      [7] => 4 
     ) 

    [educationTitle] => Array 
     (
      [0] => School1 
      [1] => School2 
      [2] => 3 
      [3] => School1 
      [4] => School2 
      [5] => School2 
      [6] => School1 
      [7] => 
     ) 
)

我想删除每个阵列的所有副本。所以，我想最终的阵列看起来像这样：

Array 
(
    [userId] => 35 
    [fieldId] => Array 
     (
      [0] => 1 
      [1] => 2 
      [2] => 3 
      [7] => 4 
     ) 

    [educationTitle] => Array 
     (
      [0] => School1 
      [1] => School2 
      [2] => 3 
      [7] => 
     ) 
)

我已经试过这（在这个答案https://stackoverflow.com/a/307701/1009116推荐）：

function multi_unique($updates) { 
    foreach ($updates as $k=>$na) 
     $new[$k] = serialize($na); 
    $uniq = array_unique($new); 
    foreach($uniq as $k=>$ser) 
     $new1[$k] = unserialize($ser); 
    return ($new1); 
}

而且它有没有效果

我也试过了（这里推荐 - https://stackoverflow.com/a/946300/1009116）

$input = array_map("unserialize", array_unique(array_map("serialize", $input)));

And t他只是返回最后一个数组（但是，它被过滤，因为它应该是）

我在做什么错？

来源

2013-03-29 Paul Dessert

所以哪个数组明确标识的唯一性？它是fieldID数组，educationTitle数组还是两者？你需要维护数字指数吗？ –

'fieldId'和是的，我需要数字索引 –

您可以使用：

$data = array(
     'userId' => 35, 
     'fieldId' => array(
       0 => 1, 
       1 => 2, 
       2 => 3, 
       3 => 1, 
       4 => 2, 
       5 => 2, 
       6 => 1, 
       7 => 4 
     ), 
     'educationTitle' => array(
       0 => 'School1', 
       1 => 'School2', 
       2 => 3, 
       3 => 'School1', 
       4 => 'School2', 
       5 => 'School2', 
       6 => 'School1', 
       7 => NULL 
     ) 
); 

print_r(arrayUnique($data));

输出

Array 
(
    [userId] => 35 
    [fieldId] => Array 
     (
      [0] => 1 
      [1] => 2 
      [2] => 3 
      [7] => 4 
     ) 

    [educationTitle] => Array 
     (
      [0] => School1 
      [1] => School2 
      [2] => 3 
      [7] => 
     ) 

)

功能使用array_flip（）用于

function arrayUnique($array) { 
    $input = array_map("unserialize", array_unique(array_map("serialize", $array))); 
    foreach ($input as $key => $value) { 
     is_array($value) and $input[$key] = arrayUnique($value); 
    } 
    return $input; 
}

来源

2013-03-29 00:07:07 Baba

工作完美，谢谢！ –

欢迎...随时 – Baba

在这种情况下，您可以使用array_combine();稍后将数据拆分到各自的容器中。

$combined = array_combine($arr['fieldId'], $arr['educationTitle']); 

$arr['fieldId'] = array_keys($combined); 
$arr['educationTitle'] = array_values($combined);

请注意原始索引在此操作后重新编号。

来源

2013-03-29 00:06:26

感谢您的帮助！ –

另一种方式;

<?php 
    $myArray = array("userID"=>'35', 
    "fieldID" => array(
    "0" => '1',"1" => '2', 
    "2" => '3',"3" => '1', 
    "4" => '2',"5" => '2', 
    "6" => '1',"7" => '4'), 
    "educationTitle"=>array(
    "0"=>'School1',"1"=>'School2', 
    "2"=>'3',"3"=>'School1', 
    "4"=>'School2',"5"=>'School2', 
    "6"=>'School1',"7"=>'',),); 

    print_r($myArray); 

    $myArray['fieldID'] = array_flip($myArray['fieldID']); 
    $myArray['fieldID'] = array_flip($myArray['fieldID']); 
    $myArray['educationTitle'] = array_flip($myArray['educationTitle']); 
    $myArray['educationTitle'] = array_flip($myArray['educationTitle']); 

    print_r($myArray); 
?>

最终输出

Array 
(
    [userID] => 35 
    [fieldID] => Array 
     (
      [6] => 1 
      [5] => 2 
      [2] => 3 
      [7] => 4 
     ) 

    [educationTitle] => Array 
     (
      [6] => School1 
      [5] => School2 
      [2] => 3 
      [7] => 
     ) 

)

来源

2013-03-29 00:58:14

如何从多维数组

回答

相关问题