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PHP Basic

PHP Intro

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PHP Install

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PHP Syntax

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PHP Comments

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PHP Variables

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PHP echo / print

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PHP Data Types

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PHP Strings

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PHP Numbers

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PHP Casting

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PHP Math

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PHP Constants

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PHP Functions

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PHP Superglobals

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PHP RegEx

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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

jddayofweek()

Example

Determine the weekday for January 13, 1998.

<?php
$jd=gregoriantojd(1,13,1998);
echo jddayofweek($jd,1);
?>

Definition and Usage

The jddayofweek() function provides the day of the week.

Syntax

jddayofweek(jd,mode);

Parameter Values

Parameter

Description

Required. A Julian Day Number.

mode

Optional. Determines the format for returning the weekday. Possible values are:

0 – Default. Returns the weekday as an integer (0=Sunday, 1=Monday, etc.).
1 – Returns the weekday as a full name string (Sunday, Monday, etc.).
2 – Returns the weekday as an abbreviated string (Sun, Mon, etc.).

Technical Details

Return Value:	Returns the Gregorian weekday as either a string or integer, depending on the mode parameter.
PHP Version:	4+