Validity of PHP verification time

PHP Validation date validity has built-in function, namely Checkdate function, below share the definition and usage of checkdate function.

Checkdate 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

Checkdate syntax

Checkdate (Month,day,year)

Month required. Set month.

Day required. Specified day.

Year required. Set year.

Examples of use are as follows:

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

The result will be output:

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

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