A little example code to show the array structure:
<?php
$aCalendars = array( CAL_GREGORIAN, CAL_JULIAN, CALL_JEWISH, CAL_FRENCH );
foreach ( $aCalendars as $cal ) {
$aCalInfo = cal_info( $cal );
echo "cal_info( " . $aCalInfo['calsymbol'] . " ) = ";
print_r( $aCalInfo );
echo "\n\n";
}
?>
will return this:
cal_info( CAL_GREGORIAN ) = 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
)
cal_info( CAL_JULIAN ) = 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] => Julian
[calsymbol] => CAL_JULIAN
)
cal_info( CAL_JEWISH ) = Array
(
[months] => Array
(
[1] => Tishri
[2] => Heshvan
[3] => Kislev
[4] => Tevet
[5] => Shevat
[6] => AdarI
[7] => AdarII
[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] => AdarI
[7] => AdarII
[8] => Nisan
[9] => Iyyar
[10] => Sivan
[11] => Tammuz
[12] => Av
[13] => Elul
)
[maxdaysinmonth] => 30
[calname] => Jewish
[calsymbol] => CAL_JEWISH
)
cal_info( CAL_FRENCH ) = Array
(
[months] => Array
(
[1] => Vendemiaire
[2] => Brumaire
[3] => Frimaire
[4] => Nivose
[5] => Pluviose
[6] => Ventose
[7] => Germinal
[8] => Floreal
[9] => Prairial
[10] => Messidor
[11] => Thermidor
[12] => Fructidor
[13] => Extra
)
[abbrevmonths] => Array
(
[1] => Vendemiaire
[2] => Brumaire
[3] => Frimaire
[4] => Nivose
[5] => Pluviose
[6] => Ventose
[7] => Germinal
[8] => Floreal
[9] => Prairial
[10] => Messidor
[11] => Thermidor
[12] => Fructidor
[13] => Extra
)
[maxdaysinmonth] => 30
[calname] => French
[calsymbol] => CAL_FRENCH
)