Description:
------------
Is it possible to have an array_xxxx-method to perform the transformation on arrays as given below. Since I am working with DBs and wrapping records of tables using classes I often
get the case to receive an array as given below and require
to pass the list of IDs, only.

For sure I can do the transformation all by myself in PHP using foreach. But since my software is getting more and more complex I appreciate any chance to increase my scripts' performance by having such trivial tasks being done in one step.


Reproduce code:
---------------
before:
array(
    array( 'id' => 1, 'foo' => 'bar' ),
    array( 'id' => 2, 'foo' => 'bar' ),
    array( 'id' => 3, 'foo' => 'bar' ),
    array( 'id' => 4, 'foo' => 'bar' ),
    array( 'id' => 5, 'foo' => 'bar' )
);

action:
$out = array_xxxxx( $in, 'id' );

result:
array( 1, 2, 3, 4, 5 );