通过数组变量索引php数组[重复]

Question

This question already has an answer here:

• How to access and manipulate multi-dimensional array by key names / path? 8 answers

I have a little problem. I need index an php array by array variable.

Example:

$structure = [];
$url = "/one/two/three";
$urlParts = explode("/", $url);

// I need convert $urlParts -> to array index ["one"]["two"]["three"]
// Expected result
$structure["one"]["two"]["three"] = true;

Is it possible in php language?

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Answer 1

You can use reference to get it like this:

<?php
$urlParts = ['one', 'two', 'three'];
$o = [];
$ref = &$o;
$len = count($urlParts);
foreach($urlParts as $k => $v)
{
    $ref[$v] = [];
    $ref = &$ref[$v];
}
$ref = true;
var_dump($o);
echo var_dump($o['one']['two']['three']);

output:

ei@localhost:~$ php test.php
array(1) {
  ["one"]=>
  array(1) {
    ["two"]=>
    array(1) {
      ["three"]=>
      &bool(true)
    }
  }
}
bool(true)