public function obtenerColumna($delimitador='', $columna=0, $incluirRepetidos=false, $eliminarEspaciosAdyacentes=true, $filaDesde=0, $filaHasta=0)
It obtains a column from a set of records of fixed-column length, delimited by a char. You can specify if you want to include repeated records and delete trailing and leading spaces, specify a number of row from where you want to start capturing, and an ending row number.
What most concerns me is the deleting spaces thing... should it be moved to a separate function? or just manually strip them after getting these records?