MACROMEDIA COLFUSION MX 7 - INSTALLING AND USING COLDFUSION MX, Reference

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564 Chapter 3: ColdFusion Functions
DaysInMonth
Description
Determines the number of days in a month.
Returns
The number of days in the month in Date .
Category
Date and time functions
Function syntax
DaysInMonth (" date" )
See also
Day
,
DayOfWeek
,
DayOfWeekAsString
,
DayOfYear
,
DaysInYear
,
FirstDayOfMonth
Parameters
Usage
When passing a date/time object as a string, you must enclose it in quotation marks. Otherwise, it
is interpreted as a numeric representation of a date/time object.
Note: You can pass the
Now
function or the
CreateDate
function as the
date
parameter of this function;
for example:
#DaysInMonth(CreateDate(2001, 3, 3))#
Example
<h3>DaysInMonth Example</h3>
<cfif IsDefined("FORM.year")>
More information about your date:
<cfset yourDate = CreateDate(FORM.year, FORM.month, FORM.day)>
<cfoutput>
<p>Your date, #DateFormat(yourDate)#.
<br>It is #DayofWeekAsString(DayOfWeek(yourDate))#, day
#DayOfWeek(yourDate)# in the week.
<br>This is day #Day(YourDate)# in the month of
#MonthAsString(Month(yourDate))#, which has
#DaysInMonth(yourDate)# days.
<br>We are in week #Week(yourDate)# of #Year(YourDate)#
(day #DayofYear(yourDate)# of #DaysinYear(yourDate)#).
<br><cfif IsLeapYear(Year(yourDate))>This is a leap year
<cfelse>This is not a leap year</cfif>
</cfoutput>
</cfif>
Parameter Description
date Date/time object, in the range 100 AD–9999 AD.