PHP 二维数组推送问题

Question

我进退两难了..

这是我想要的输出；

Array
(
[country] => Array(
                    [0] => England
                    [1] => Channel Islands
                )
[gor] => Array(
                    [0] => North East
                    [1] => North West
                )
[parliamentaryconstituency] => Array(
                    [0] => Aldershot
                    [1] => Aldridge-Brownhills
                )
)

这是我目前拥有的；

Array
(
[0] => Array
    (
        [country] => England
    )
[1] => Array
    (
        [country] => Channel Islands
    )
[2] => Array
    (
        [gor] => North East
    )
[3] => Array
    (
        [gor] => North West
    )
[4] => Array
    (
        [parliamentaryconstituency] => Aldershot
    )
[5] => Array
    (
        [parliamentaryconstituency] => Aldridge-Brownhills
    )
)

我的代码是；

foreach ($input as $key => $value) {
    foreach ($value as $subkey => $subvalue) {
        switch ($key)
        {
            case 'country':
                $country = Country::description($subvalue)->get()->first();
                array_push($new_input, array('country' => $country->description));
              break;                    
            case 'gor':
                $gor = Gor::description($subvalue)->get()->first();
                array_push($new_input, array('gor' => $gor->description));
              break;
            case 'parlc':
                $parliamentaryconstituency = ParliamentaryConstituency::description($subvalue)->get()->first();
                array_push($new_input, array('parliamentaryconstituency' => $parliamentaryconstituency->description));
              break;
        }
    }
}

我考虑过 array_push($new_input['country'], $country->description); 并且 $new_input['country'] 在 foreach 之上，但是如果没有选择国家，那将输出一个空的国家数组，我不希望它出现在如果是这样的话。

Answer 1

你可以试试这个：

$result = array();
foreach ($input as $key => $value) {
    foreach ($value as $subkey => $subvalue) {
        switch ($key)
        {
            case 'country':
                $country = Country::description($subvalue)->get()->first();
                if ($country) {
                    $result['country'][] = $country;
                }
                break;
            case 'gor':
                $gor = Gor::description($subvalue)->get()->first();
                if ($gor) {
                    $result['gor'][] = $gor;
                }
                break;
            case 'parlc':
                $parliamentaryconstituency = ParliamentaryConstituency::description($subvalue)->get()->first();
                if ($parliamentaryconstituency) {
                    $result['parliamentaryconstituency'][] = $parliamentaryconstituency;
                }
                break;
        }
    }
}
print_r($result);

Answer 2

array_push 总是在数组末尾添加一个新元素。相反，使用像这样的所有键初始化数组

$result = array("country" => array(), "gor" => array(), etc);

并且在你的循环中假设你想要插入的值在 $value do

$result[$key][] = $value

或者如果您更喜欢使用 array_push

array_push($result[$key], $value);

Answer 3

'$list=array();'


/add array value
'array_push($list,array("name"=>"jone","surname"=>"doe"));'

//get array value
'$list[index][columnname]'

PHP 二维数组推送问题

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