How to Convert a Dot-Separated String into a Nested Array in PHP?

Transforming a String with Array Structure into an Array

This question presents a challenge: converting a string with an array structure into an actual array. The given string follows a dot-separated structure, representing nested arrays. To transform this string, we can utilize PHP's built-in functions and logical reasoning.

First, break down the string into an array of keys using explode(). Then, iterate through these keys and construct the desired array structure. If a key doesn't exist in the current level of the array, create it.

Example code:

<code class="php">$string = "Main.Sub.SubOfSub";
$data = "SuperData";
$array = [];
$path = explode('.', $string);

$root = &$array;
while (count($path) > 1) {
    $key = array_shift($path);
    if (!isset($root[$key])) $root[$key] = [];
    $root = &$root[$key];
}
$root[$path[0]] = $data;</code>

This code efficiently constructs the desired array structure from the provided string, allowing you to access nested values in a structured way.

The above is the detailed content of How to Convert a Dot-Separated String into a Nested Array in PHP?. For more information, please follow other related articles on the PHP Chinese website!