PHP中的cal_info()函数是一个内置函数, 用于返回有关指定日历的信息。 cal_info()函数返回一个数组, 其中包含calname, month, abbrevmonth和maxdaysinmonth和calsymbol。
它以日历为参数, 并返回与指定日历有关的信息。
语法如下：
cal_info($calendar)参数：PHP中的cal_info()函数仅接受一个参数$日历。此参数指定一个数字, 该数字指示你要了解的日历。以下是可用作此参数值的有效数字列表。
- 0 = CAL_GREGORIAN
- 1 = CAL_JULIAN
- 2 = CAL_JEWISH
- 3 = CAL_FRENCH
返回值：它返回有关指定日历的信息。
错误与异常:
- 如果在参数中未指定日历, 则cal_info()函数将返回有关所有日历的信息。
- 要将日历指定为cal_info()函数的参数, 需要提及其各自的数值而不是日历名称, 例如公历使用" 0"。
下面的程序说明了cal_info()函数。
程序1:
<?php
// displaying information
// regarding gregorian calendar
print_r (cal_info(0));
?>输出如下：
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
)程序2:
<?php
// displaying information
// regarding jewish calendar
print_r (cal_info(2));
?>输出如下：
Array
(
[months] => Array
(
[1] => Tishri
[2] => Heshvan
[3] => Kislev
[4] => Tevet
[5] => Shevat
[6] => Adar I
[7] => Adar II
[8] => Nisan
[9] => Iyyar
[10] => Sivan
[11] => Tammuz
[12] => Av
[13] => Elul
)
[abbrevmonths] => Array
(
[1] => Tishri
[2] => Heshvan
[3] => Kislev
[4] => Tevet
[5] => Shevat
[6] => Adar I
[7] => Adar II
[8] => Nisan
[9] => Iyyar
[10] => Sivan
[11] => Tammuz
[12] => Av
[13] => Elul
)
[maxdaysinmonth] => 30
[calname] => Jewish
[calsymbol] => CAL_JEWISH
)参考：
http://php.net/manual/en/function.cal-info.php
