如何在Object Array中将一个键映射到另一个键?

Let's say, I have an Array Object:

stdClass Object
(
    [uri] => sites/all/themes/bootstrap/templates/test-example.tpl.php
    [filename] => test-example.tpl.php
    [name] => test-example.tpl
)

Is there any way to map [uri] to [filename] ?

Example:

Array(
[sites/all/themes/bootstrap/templates/test-example.tpl.php] = [test-example.tpl.php]
) 

Let's assume that your object is named $obj:

$map = array( $obj->uri => $obj->filename );

var_dump( $map );

If you need to iterate through many elements, you can use foreach, but the logic is the same at all.