php用键密封多维数组

Question

i have this array

$array =array('a', 'b', array(array('c'), 'd'), 'e', array('f'), 'g');

i want to have as result this

Array
(
    [0] => a
    [1] => b
    [2] => c
    [3] => d
    [4] => e
    [5] => f
    [6] => g
)

I am using this function :

function flatten ($array) {
    $result = array();
    array_walk_recursive($array, function($v, $k) use (&$result) {
        $result[] = $v;
    });
    return $result;
}

i am getting this result :

Array
(
    [0] => array('a', 'b', 

    [1] => array(array('c'), 'd'),

    [2] =>  'e', array('f'), 'g')
)

which the same as the original input array.

any help would be appreciated

Answer 1

Alternatively, you could also use SPL for this, particularly RecursiveIteratorIterator with RecursiveArrayIterator. Consider this example:

$array = array('a', 'b', array(array('c'), 'd'), 'e', array('f'), 'g');
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array));
foreach($iterator as $value) {
    $data[] = $value;
}
echo '<pre>';
print_r($data);
echo '</pre>';

Should yield same results:

Array
(
    [0] => a
    [1] => b
    [2] => c
    [3] => d
    [4] => e
    [5] => f
    [6] => g
)