将字符串添加到数组，保持为数组

Question

I have two arrays:

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

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

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

How do I add "Move to " to $folders and have $options stay as an array?

In a drop down menu this will appear as:

Delete

Move to folder1

Move to folder2

Answer 1

If you want to add the "Move to" string to every element of the $folder array, try this:

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

OR (based on the suggestion of @zamnuts)

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

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