One dimensional array to array of arrays

PHP
1

If I have a function like this:

function convertArray($input)
{

}

How would I code it so it would produce results like the following?


$result = convertArray( array('a', 'b', 'c', 'd') );
// $result should be array( 'a' => array( 'b' => array( 'c' => array( 'd' => array() ) ) ) )

$result = convertArray( array('x', 'y', 'z') );
// $result should be array( 'x' => array( 'y' => array( 'z' => array() ) ) )

Is this possible?

2

Reverse the array, then loop through it and create your new array.

3

or recurse it to do the same.

4

Thanks!

“Reverse the array” gave me my eureka moment.

Here is what I have come up. It seems to work.

function convertArray(array $input = array())  
{ 
    $result = array();
    while(count($input)){
        $newArray = array();
        $newArray[array_pop($input)] = $result;
        $result = $newArray;
    }
    return $result;
}
5