PHP Loop for multidimensional array index

Question

I'm having trouble to make a tree.

<?php
$x = [];
for($i=0;$i<5;$i++){
    //What I need to do?
}

print_r($x);

I would like to get an Output like this:

Array
(
    [0] => Array
        (
            [1] => Array
                (
                    [2] => Array
                        (
                            [3] => Array
                                (
                                    [4] => 
                                )
                        )
                )
        )
)

Please, guide me how to do that?

Why loop and not recursion?

dWinder
– dWinder

2019-07-18 09:27:19 +00:00
Commented Jul 18, 2019 at 9:27 — dWinder
– dWinder, Commented Jul 18, 2019 at 9:27

dWinder · Accepted Answer · 2019-07-18 09:31:53Z

5

You can alter the way of the for loop to be decreasing and then do:

$x = [];
for($i=4;$i>=0;$i--){
    $x = [$i => $x];
}

Live example: 3v4l

answered Jul 18, 2019 at 9:31

dWinder

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