- var_dump: documentation ( source)
<?php
$a = [
'a' => [
'a1' => 'a1',
'a2' => 'a2',
'a3' => 'a3',
],
'b' => [
'b1' => 'b1',
'b2' => 'b2',
'b3' => 'b3',
],
];
$it = new RecursiveArrayIterator($a, RecursiveArrayIterator::CHILD_ARRAYS_ONLY);
$b = [];
foreach ($it as $key => $value) {
$b[$key] = $value;
}
var_dump($b);