cal_info() 函数返回一个数组，其中包含了关于给定历法的信息。
所返回的数组包含这些元素：calname, calsymbol, month, abbrevmonth 以及 maxdaysinmonth。
cal_from_jd(jd,calendar)
| 参数 | 描述 |
|---|---|
| calendar | 必需。规定要使用的历法。可以使用下面这些常量：
|
提示和注释
提示：在 PHP 5 中，如果没有指定 calendar 参数，则返回所有被支持的历法的信息。
例子
输出：
Array ( [months] => Array ( [1] => January [2] => February [3] => March [4] => April [5] => May [6] => June [7] => July [8] => August [9] => September [10] => October [11] => November [12] => December ) [abbrevmonths] => Array ( [1] => Jan [2] => Feb [3] => Mar [4] => Apr [5] => May [6] => Jun [7] => Jul [8] => Aug [9] => Sep [10] => Oct [11] => Nov [12] => Dec ) [maxdaysinmonth] => 31 [calname] => Gregorian [calsymbol] => CAL_GREGORIAN )
