php create multidimensional array from flat one

Question

I have an array like this:

 \'foo\', 1 => \'bar\', ..., x => \'foobar\' );
?>

What is the fas

Answer 1

I'm confused about what you want to do with non-numeric keys (ie, x in your example). But in any case using array references will help

$array = array( 0 => 'foo', 1 => 'bar',  x => 'foobar' );


$out = array();
$curr = &$out;

foreach ($array as $key => $value) {
    $curr[$value] = array(); 
    $curr = &$curr[$value];
}

print( "In: \n" );
print_r($array);
print( "Out : \n" );
print_r($out);

Prints out

In:
Array
(
    [0] => foo
    [1] => bar
    [x] => foobar
)
Out :
Array
(
    [foo] => Array
        (
            [bar] => Array
                (
                    [foobar] => Array
                        (
                        )

                )

        )

)