How to recursively create a multidimensional array?

Question

I am trying to create a multi-dimensional array whose parts are determined by a string. I\'m using . as the delimiter, and each part (except for the last) shoul

Answer 1

Let’s assume we already have the key and value in $key and $val, then you could do this:

$key = 'config.debug.router.strictMode';
$val = true;
$path = explode('.', $key);

Builing the array from left to right:

$arr = array();
$tmp = &$arr;
foreach ($path as $segment) {
    $tmp[$segment] = array();
    $tmp = &$tmp[$segment];
}
$tmp = $val;

And from right to left:

$arr = array();
$tmp = $val;
while ($segment = array_pop($path)) {
    $tmp = array($segment => $tmp);
}
$arr = $tmp;