Multidimensional Array Implode

gistfile1.txt

function r_implode( $glue, $pieces )
    {
	foreach( $pieces as $r_pieces )
	{
    		if( is_array( $r_pieces ) )
    		{
      			$retVal[] = r_implode( $glue, $r_pieces );
    		}
    		else
    		{
      			$retVal[] = $r_pieces;
    		}
  	}
  	return implode( $glue, $retVal );
    }