Global “method_missing” in PHP? [duplicate]

Possible Duplicate:
Magic functions __call() for functions?

I can implement __call() to provide method_missing behavior in PHP classes. Is there some way to provide the same functionality in the global scope?

I want something like this:

function __call( $name, $arguments ) {
  echo( sprintf( '%s called', $name ) );
}

echo( 'before' );
call_undefined_function( $a, $b );
echo( 'after' );

Outputs:

before
call_undefined_function called
after