php man page for checkdate

CHECKDATE(3)								 1							      CHECKDATE(3)

checkdate - Validate a Gregorian date

SYNOPSIS
       bool checkdate (int  $month, int  $day, int  $year)

DESCRIPTION
	Checks the validity of the date formed by the arguments. A date is considered valid if each parameter is properly defined.

PARAMETERS
	      o $month
		- The month is between 1 and 12 inclusive.

	      o $day
		- The day is within the allowed number of days for the given $month. Leap $years are taken into consideration.

	      o $year
		- The year is between 1 and 32767 inclusive.

RETURN VALUES
	Returns TRUE if the date given is valid; otherwise returns FALSE.

EXAMPLES
       Example #1

	      checkdate(3) example

	      <?php
	      var_dump(checkdate(12, 31, 2000));
	      var_dump(checkdate(2, 29, 2001));
	      ?>

	      The above example will output:

	      bool(true)
	      bool(false)

SEE ALSO
       mktime(3), strtotime(3).

PHP Documentation Group 													      CHECKDATE(3)