计算给定日期的周数(年度的第几周).
#Include <Date.au3>
_WeekNumberISO([$iYear = @YEAR[, $iMonth = @MON[, $iDay = @MDAY]]])
| $iYear | [可选参数] 年值 (默认 = 本年度) |
| $iMonth | [可选参数] 月值 (默认 = 本月) |
| $iDay | [可选参数] 天值 (默认 = 当前日) |
| 成功: | 返回给定日期的周数 |
| 失败: | 返回 0 |
| @Error: | |
| 0 - 无错误. | |
| 1 - 错误的参数值 | |
| 99 - 非本周开始值 |
#include <Date.au3>
MsgBox(4096, "Todays weeknumber", "Todays weeknumber is " & _WeekNumberISO())