Create multidimensional array from rows - php

Question

The result of a query in my database returns something like this (a record for each row):
1.
1.1.
1.1.01.
1.1.01.001
1.2.
1.2.01.
1.2.02.
I'm trying to create something that returns me a multidimensional array in a tree format, like this:
array(
'1.' => array(
'1.1' => array(
'1.1.01.' => array(
(int) 0 => '1.1.01.001'
)
),
'1.2' => array(
(int) 0 => '1.2.01.',
(int) 1 => '1.2.02.'
)
)
)
All I could think to do was reverse the order of elements using explode().
I appreciate any suggestions.

Answer 1

Your format is very tricky because of :
1.2.
1.2.01. |
1.2.02. V Making this array instead of value
You can try
$string = "1.
1.1.
1.1.01.
1.1.01.001
1.2.
1.2.01.
1.2.02.";
$array = explode("\n", $string);
$data = array();
$temp = &$data;
$it = new CachingIterator(new ArrayIterator($array), CachingIterator::FULL_CACHE);
$continue = false;
foreach ( $it as $v ) {
$v = trim($v);
if ($it->hasNext()) {
$next = trim($it->getInnerIterator()->current());
if (stripos($next, $v) === 0) {
$temp = &$temp[$v];
} else {
$temp[] = $v;
if (strlen($next) != strlen($v)) {
$temp = &$data;
}
}
} else {
$temp[] = $v;
}
}
print_r($data);
Output
Array
(
[1.] => Array
(
[1.1.] => Array
(
[1.1.01.] => Array
(
[0] => 1.1.01.001
)
)
)
[1.2.] => Array
(
[0] => 1.2.01.
[1] => 1.2.02.
)
)
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