PHP – Convert multidimensional array to 2D array with dot notation keys

by

teh codez

$ritit = new RecursiveIteratorIterator(new RecursiveArrayIterator($myArray));
$result = array();
foreach ($ritit as $leafValue) {
    $keys = array();
    foreach (range(0, $ritit->getDepth()) as $depth) {
        $keys[] = $ritit->getSubIterator($depth)->key();
    }
    $result[ join('.', $keys) ] = $leafValue;
}

output

Array
(
    [key1] => value1
    [key2.subkey] => subkeyval
    [key3] => value3
    [key4.subkey4.subsubkey4] => subsubkeyval4
    [key4.subkey4.subsubkey5] => subsubkeyval5
    [key4.subkey5] => subkeyval5
)

demo: http://codepad.org/YiygqxTM

I need to go, but if you need an explanation of that tomorrow, ask me.

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