php - 将使用循环创建的数组附加到另​​一个数组

Question

我有一个数组

$variables_a = array(
   'a' => $a,
   'b' => $b,
   'c' => $c
);

然后是另一个 $variables_b = array('x','y','z') 我想像这样遍历 B 数组:

foreach($variables_b as $var) {
    $variables_c[] = array($var => $$var);
}

然后将 A 和 C 与 $variables_combined = array_merge($variables_A, $variables_C)

合并

我希望得到的输出是当我 print_r 是

Array
(
     [a] => a
     [b] => b
     [c] => c
     [x] => x
     [y] => y
     [z] => z
)

但我得到的是

Array
(
     [a] => a
     [b] => b
     [c] => c
     [0] => Array
         (
            [x] => x
         )    
     [1] => Array
         (
            [y] => y
         )    
     [2] => Array
         (
            [z] => z
         )    
)

如果我将 $feature_variables[] = array($feature => $$feature) 更改为 $feature_variables = array($feature => $$feature) 我得到

Array
(
     [a] => a
     [b] => b
     [c] => c
     [z] => z
)

即$variables_b 中的最后一项，但没有其他项。那么我哪里出错了？

Answer 1

只需这样做:

$newvar = $variables_a;

foreach($variables_b as $var)
{
$newvar[$var] = $var;
}

$newvar 将包含你想要的数组