动态添加维度到PHP数组

Question

I thought about it a lot before posting this question.

The question is more conceptual than anything else.

Starting from a classic array, I want to dynamically transform it into multidinamic with subtrees.

to be clear, from this:

$array = ['my', 'unique', 'values', 'array', 'and', 'so', 'on', '...'];

to this:

Array
(
    ['my'] =>
        ['unique'] =>
            ['values'] =>
                ['array'] =>
                    ['and'] =>
                        ['so'] =>
                            ['on']=>
                                ['...'] => []
)

The only attempt I made was "barbarously" to dynamically create strings and pass them with the eval() command.

I don't write the code here for personal dignity. It's bad enough I confessed it. Insiders will understand...

I fully believe that there is a correct way to do it, but of course, if I'm here, I don't know it

Best

Oscar

Answer 1

Start from the end and end with the start:

$length = sizeof($array);
$value = [];
for ($index = $length - 1; $index >= 0; $index--) {
    $value = [
        "{$array[$index]}" => $value
    ];
    unset($array[$index]);
}
$array[]=$value;