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PHP Basic

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PHP Install

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PHP Comments

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PHP Data Types

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PHP Form

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PHP Advanced

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PHP OOP

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MySQL Database

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PHP XML

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PHP Reference

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Text lesson

cal_to_jd()

Example

Convert June 20, 2007 (Gregorian calendar) to a Julian Day Count.

<?php
$d=cal_to_jd(CAL_GREGORIAN,6,20,2007);
echo $d;
?>

Definition and Usage

The cal_to_jd() function converts a date from a specified calendar to a Julian Day Count.

Syntax

cal_to_jd(calendar,month,day,year);

Parameter Values

Parameter	Description
calendar	Required. Specifies the calendar to convert from. Must be one of the following values: CAL_GREGORIAN CAL_JULIAN CAL_JEWISH CAL_FRENCH
month	Required. Specifies the month as a numeric value.
day	Required. Specifies the day as a numeric value.
year	Required. Specifies the year as a numeric value.

Technical Details

Return Value:	Returns a Julian Day number
PHP Version:	4.1+