(PECL maxdb >= 1.0)
maxdb_stmt_close -- maxdb_stmt::close — Closes a prepared statement
Estilo por procedimientos
$stmt
   ) : boolEstilo orientado a objetos
   Closes a prepared statement. maxdb_stmt_close() also deallocates the
   statement handle pointed to by stmt.
   If the current statement has pending or unread results, this function cancels them so that
   the next query can be executed.
  
   Devuelve TRUE en caso de éxito o FALSE en caso de error.