Question

我有两个不同尺寸的数组，如下所示：数组名为$ form_types;

Array
(
    [0] => Array
        (
            [0] => 1
            [form_type_id] => 1
            [1] => Full name
            [form_title] => Full name
            [2] => text
            [input_type] => text
        )

    [1] => Array
        (
            [0] => 2
            [form_type_id] => 2
            [1] => Birth date
            [form_title] => Birth date
            [2] => date
            [input_type] => date
        )

    [2] => Array
        (
            [0] => 3
            [form_type_id] => 3
            [1] => Sex
            [form_title] => Sex
            [2] => text
            [input_type] => text
        )

    [3] => Array
        (
            [0] => 4
            [form_type_id] => 4
            [1] => Address
            [form_title] => Address
            [2] => text
            [input_type] => text
        )

    [4] => Array
        (
            [0] => 5
            [form_type_id] => 5
            [1] => City
            [form_title] => City
            [2] => select
            [input_type] => select
        )

名为$ _POST的数组（数组值1和5与$ form_types中的 form_type_id 相同）：

Array
(
    [1] => John Smith
    [5] => Chicago
)

我需要找到交叉值的方法。在这种情况下，将是：

Array
(
    [1] => text
    [5] => select
)

我试过了：

$arr_input_types = array_intersect($input_types, $_POST);

但它返回零。

我也尝试过：

$arr_input_types = array_intersect(array_column($input_types, 'form_type_id'), array_keys($_POST));

但仅返回：

Array
(
    [0] => 1
    [4] => 5
)

Answer 1

对于标准的php数组函数之一，您尝试做的事情有点过于复杂。但是，您可以通过一些循环轻松完成：

//populate arrays
$input_types[] = array (0 => 1, "form_type_id" => 1, 1 => "Full name", "form_title" => "Full name", 2 => "text" , "input_type" => "text");
$input_types[] = array (0 => 2, "form_type_id" => 2, 1 => "Birth date", "form_title" => "Birth date", 2 => "date" , "input_type" => "date");
$input_types[] = array (0 => 3, "form_type_id" => 3, 1 => "Sex", "form_title" => "Sex", 2 => "text" , "input_type" => "text");
$input_types[] = array (0 => 4, "form_type_id" => 4, 1 => "Address", "form_title" => "Address", 2 => "text" , "input_type" => "text");
$input_types[] = array (0 => 5, "form_type_id" => 5, 1 => "City", "form_title" => "City", 2 => "select" , "input_type" => "select");

$_POST[1] = 'John Smith';
$_POST[5] = 'Chicago';

//Loop over each entry to search for
foreach (array_keys($_POST) as $key ){
    //Loop to the input array
    foreach ($input_types as $search){
        //If we find the right key, add it to the results array
        if ($search['form_type_id'] == $key){
            $results[$key] = $search['input_type'];
        }
    }
}

print_r($results);

Answer 2

根据您的解释，您似乎想要X数组中的每个键$_POST：

找到$form_types数组的成员，其中子成员具有键= form_type_id' and value matching X`。
然后在＃1中选择的成员中，找到具有键V的子成员的值2。
在结果数组中，创建一个类似X => V的成员。

如果是这样，试试这个：

foreach ($_POST as $key => $val) {
  $look_for = NULL;
  foreach ($form_types as $form_type) {
    if ($form_type['form_type_id'] == $key) {
      $look_for = $form_type[2];
      break;
    }
  }
  $result[$key] = $look_for; // NULL if no match found
}

将具有不同维度的两个数组相交

2 个答案: