PHP checkdate () date judgment function example tutorial

PHP checkdate () date judgment function example tutorial

Definition and usage
This checkdate () function returns true, except false if it is valid on the specified date.

The date is valid. If:

1 to 12 inclusive every month
The number of days allowed in a day is a specific month.
1 to 32767 inclusive this year
Syntax

Checkdate (month, day, year)
Parameters are required for one month. Required by the specified month on a daily basis. Specify a day and a year. Specify a year to view a checkdate () instance tutorial. <? Php
Var_dump (checkdate (12, 31, 2000 ));
Var_dump (checkdate (2003 ));
Var_dump (checkdate (2004 ));
?>
Output result.
Bool (true)
Bool (false)
Bool (true)