Question

我有这个数组：

[docs] => Array
(
    [indexone] => Array    ( [0] => P008062518   )
    [indextwo] => Array    ( [0] =>              )
    [indexthree] => Array  ( [0] => 0000141334   )
    [indexfour] => Array   ( [0] => P006871638   )
    [indexfive] => Array   ( [0] => 0000910067   )
    [indexsix] => Array    ( [0] =>              )
)

我需要以这一个结束，从给定的密钥中提取所有值：

[docValues] => Array
(
    [indexone] => Array    ( P008062518, 0000141334, P006871638, 0000910067    )
)

我尝试这个循环，但我以相同的数组结构结束：

foreach($values as $key => $data)
 {
    if(array_key_exists('docs', $data) )
    {
        $filtered = array_filter($data['docs'], function($var) { return !empty($var);});
        $numDocs = array_values($filtered);
        $values[$key]['docValues'] = $numDocs;
    }
}

怎么做？

Answer 1

获得精确的数组输出：

$result['docValues'][key($values['docs'])] =
    array_filter(array_column($values['docs'], 0));

获取第一个密钥，将其用作key()
使用array_column()
使用array_filter()

Answer 2

只需这样做：

您的数组

$arr = array("docs" => 
             array(
                 'indexone' => array('P008062518'),
                 'indextwo' => array(''),
                 'indexthree' => array('0000141334'),
                 'indexfour' => array('P006871638'),
                 'indexfive' => array('0000910067'),
                 'indexsix' => array('')
             )
        );

<强>过程：

echo '<pre>';
$index = key($arr["docs"]);

$output['docValues'][$index] = implode('&lt;br/&gt;', array_filter(array_column($arr['docs'], 0)));
print_r($output);

<强>解释

key = key function返回第一个索引。
implode = 使用<br/>
array_filter = 使用回调过滤数组的值功能
array_column = 返回输入中单个列的值阵列

<强>结果：

Array
(
    [docValues] => Array
        (
            [indexone] => P008062518<br/>0000141334<br/>P006871638<br/>0000910067
        )

)

Answer 3

如果您的第一个数组被称为$docArray，那么您可以执行以下操作：

$docValuesArray = array();//declaring the result array
$indexoneArray = array();//declaring the array you will add values
//to in the foreach loop

foreach ($docArray as $value)
{
  $indexoneArray[] = $value[0];//giving each of the values
  //found in $docArray to the $indexoneArray
}

$docValueArray[] = $indexoneArray;//adding the $indexoneArray
//to the $docsValueArray

如果这对您有用，请告诉我。

Answer 4

这应该适合你：

$docs = [
    'indexone' => ['P008062518'],
    'indextwo' => [ ],
    'indexthree' => ['0000141334'],
    'indexfour' => ['P006871638'],
    'indexfive' => ['0000910067'],
    'indexsix' => [ ],
];

$allDocs = array();

foreach($docs as $key => $doc) {
    $docString = implode("<br>",$doc);
    if (empty($docString)) {
        continue;
    }
    $allDocs[] = $docString;
}
$allDocsString = implode("<br>",$allDocs);

echo($allDocsString);

P008062518
0000141334
P006871638
0000910067

Answer 5

使用array_filter()功能。如果在array_filter中传递数组，则删除所有空数据和空数据

PHP生成一个包含许多值的数组索引并删除空数组值

5 个答案: