使用 array_flip 像这样:

Use array_keys instead of array_flip like so:

$array1 = ["fname" => "NULL", "lname" => "NULL", "id" => "NULL"];

$array2 = ["john", "smith", "11123"];

$new_array = array_combine(array_keys($array1), $array2);

print_r($new_array);

输出:

Array
(
    [fname] => john
    [lname] => smith
    [id] => 11123
)

演示中的eval.in