Mysql last day of month

The Tutorial illustrate an example from 'Mysql Last Day of Month'.
To understand and grasp the example we run LAST_DAY(now( )) that
return the last day of the month.
LAST_DAY(now( )) : The Query return the last day of the current
month a s fieldname Last Day of Month.
Query:
mysql> SELECT DAY(LAST_DAY(now())as LastDayOfMonth;
|
Output:-
+----------------+
| LastDayOfMonth |
+----------------+
| 31 |
+----------------+
1 row in set (0.00 sec)
|

|