Backend Development 2 min read

JDDayOfWeek – Return Day of Week from Julian Day Number (PHP)

The JDDayOfWeek PHP function returns the day of the week for a given Julian day number, offering numeric or English string results based on an optional mode parameter, making it useful for date calculations in backend development.

Laravel Tech Community
Laravel Tech Community
Laravel Tech Community
JDDayOfWeek – Return Day of Week from Julian Day Number (PHP)

The mixed jddayofweek (int $julianday[, int $mode = CAL_DOW_DAYNO]) function returns the day of the week for a given Julian day number. Depending on the $mode parameter, the result can be an integer (0=Sunday … 6=Saturday) or a string representation in English, either full or abbreviated.

Parameters

$julianday : a Julian day number.

$mode (optional): 0 (default) returns numeric day, 1 returns full English name, 2 returns abbreviated English name.

Return value

Either an integer or a string representing the day of the week, according to the selected mode.

backendPHPfunctionDateJulianday
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