php - 将字符串添加到数组中，保持为数组

Question

我有两个数组：

$delete = array("Delete" => "Delete");

$folders = array("0" => "folder1","1" => "folder2");

$options = array_merge($delete, $folders);

如何将“移动到”添加到 $folders 并让 $options 保留为数组？

在下拉菜单中，这将显示为：

Delete

Move to folder1

Move to folder2

Answer 1

如果要将“移动到”字符串添加到 $folder 数组的每个元素，请尝试以下操作：

$folders = array("0" => "folder1","1" => "folder2");
foreach($folders as $key => $value) {
    $folders[$key] = 'Move to '.$value;
}
$options = array_merge($delete, $folders);

或（基于@zamnuts 的建议）

$folders = array("0" => "folder1","1" => "folder2");

function moveto($n) {  
     return 'Move to '.$n; 
}
$folders = array_map("moveto", $folders);
$options = array_merge($delete, $folders);

Answer 2

这应该做你需要的：

$folders[] = "Move to";

$options = array_merge($delete, $folders);

Answer 3

不确定是否是真正的问题，但只需在array_merge()通话后添加$folders[] = "Move to". 由于生成了一个新数组，因此对其或之后array_merge()的任何修改都不会影响.$delete$folders$options