得到一个月中有多少天
[code]<#function get_days_in_month sdate>
<#assign year = sdate?string("yyyy")?number>
<#assign month = sdate?string("M")?number>
<#assign days = 0>
<#if month==2 >
<#if (year % 4)==0 >
<#assign days = 28>
<#else>
<#if (year % 100)==0>
<#assign days = 29>
<#else>
<#if (year % 400)==0>
<#assign days = 28>
<#else>
<#assign days = 29>
</#if>
</#if>
</#if>
<#else>
<#if (month == 4)||(month == 6)||(month == 9)||(month == 11) >
<#assign days = 30>
<#else>
<#assign days = 31>
</#if>
</#if>
<#return days >
</#function>[/code]
[code]<#function get_days_in_month sdate>
<#assign year = sdate?string("yyyy")?number>
<#assign month = sdate?string("M")?number>
<#assign days = 0>
<#if month==2 >
<#if (year % 4)==0 >
<#assign days = 28>
<#else>
<#if (year % 100)==0>
<#assign days = 29>
<#else>
<#if (year % 400)==0>
<#assign days = 28>
<#else>
<#assign days = 29>
</#if>
</#if>
</#if>
<#else>
<#if (month == 4)||(month == 6)||(month == 9)||(month == 11) >
<#assign days = 30>
<#else>
<#assign days = 31>
</#if>
</#if>
<#return days >
</#function>[/code]
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