PHP checkdate () to determine whether the date function

Definitions and usage
The Checkdate () function verifies a Gregorian high date.

If the specified value is valid, the function returns True, otherwise it returns false.

The date is legal in the following cases:

Month between and including 1-12
The value of day is within the range of days that a given month should have, and a leap year has been taken into account.
Year is between and includes 1 to 32767
Grammar
Checkdate (month,day,year) parameter description
Month required. Set month.
Day required. Specified day.
Year required. Set year.
Example

<?php Tutorial
Var_dump (Checkdate (12,31,2000));
Var_dump (Checkdate (2,29,2003));
Var_dump (Checkdate (2,29,2004));
?>

Output:

BOOL (TRUE)
BOOL (FALSE)
BOOL (TRUE)