You can clone with
* Get a single text value for a post custom field in WordPress, bypassing the normal array return.
* From a discussion on Twitter, which prompted me to post this. Many people seem to be
* unaware of PHP's `list()` operator (it's not, technically, a function).
* If you are not in the loop, you can pass a post ID as a second parameter.
list( $val ) = get_post_custom_values( 'key' );