(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
cal_info — 返回选定历法的信息
$calendar = -1): array
   cal_info()返回选定 calendar的作息。
  
    历法信息以一个数组的形式返回,包含的元素有历法名称,历法代码,月份,月份的缩写和单月的最多天数。作为参数的calendar历法名字可以有:
   
CAL_GREGORIAN - Gregorian Calendar
     
    CAL_JULIAN - Julian Calendar
     
    CAL_JEWISH - Jewish Calendar
     
    CAL_FRENCH - French Revolutionary Calendar
     
    
   如果没有指定参数calendar,所支持的所有历法将以数组形式返回。
  
calendar返回信息所指定的历法名称,如果没有指定历法,将返回所有历法。
| 版本 | 说明 | 
|---|---|
| Since 5.0 | 参数 calendar作为可选项,缺省时默认值为"所有历法"。 | 
示例 #1 cal_info() example
<?php
$info = cal_info(0);
print_r($info);
?>
以上例程会输出:
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
)