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Ryan Flynn (hide@address.com | www.parseerror.com | www.phpsex.com)
irc.dal.net->#php->pizza_milkshake

LATEST, GREATEST: http://www.phpsex.com/classes/readme.Scheduler.txt

IF YOU WANT TO SKIM OVER THIS, PLEASE AT LEAST READ THE BOTTOM SECTION
"EXAMPLES". YOU CAN ALWAYS COME BACK AND ACTUALLY READ IT WHEN YOU RUN
INTO PROBLEMS.





The syntax of the date rules are similiar to cron/crontab

SECOND MINUTE HOUR DAY MONTH

each field is whitespace-delimited, meaning you can use on or more SPACES " ",
TABS "\t" or NEWLINES "\n"


SECOND
MINUTE
HOUR
MONTH

	Second, Minute, Hour and Month all have exactly the same syntax. They can take
	single values, wildcards, sets and ranges:

	Single Value:
	
		5
		0
		59
	
	Wildcards:
	
		*
	
		For seconds or minutes, * is equivalent to the range 0-59
		For hours * is equivalent to the range 0-23
		For days * is equivalent to the range Mon-Sun
		For months * is equivalent to the range 1-12
	
		NOTE: Wildcard matching perform slightly better than the
		alternative ranges. Use them if possible.
	
	
	Sets:
	
		0,20,40
		0,5,10,15,20,25,30,35,40,45,50,55
		1,3,5,7,9,11
		5-10,15-20	(not this is a set of ranges)
		*,5 (equivalant to a single *)
	
	Ranges:
	
		1-5
		0-59 (for seconds or minutes this is equivalent to '*')


DAYS

	Days are more flexible but also more confusing. We have everything from
	the other fields, but we have conditionals added. There are two
	conditions:

	Sign	Rough Translation
	--------------------------------------------
	&		Only if it's
	!		Only if it isn't

	With the added conditionals we can do things like:

	1-7&Fri

	Meaning, logically, "if the day of the month is less than 8 and the
	current day is Friday" -- the more human meaning being "the first
	Friday of the month"

	Notice that we use the 3-letter "Fri" for Friday; this is another addition
	to the days field. We can use 3-letter abbreviations in either a range or
	as a condition, but NEVER BOTH:

	OK:
	
	Mon-Fri		(every weekday)
	Sat-Sun		(only on the weekends)
	8-15&Mon	(the second Monday of the month)
	1-3!Mon-Fri	(the first 3 days of the month, as long as not Mon-Fri)
	1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31	(every other day)

	NOT OK:					OK:

	Mon-Fri!Tue				Mon,Wed-Fri
	Sat&Sun					Sat-Sun
	

		
EXAMPLES:

	Remember:

		- Whitespace (space, tab, newline) - delimited fields

	SECOND	MINUTE				HOUR		DAY		MONTH
	*		*					*			*		*		(every second)
	0,30	*					*			*		*		(every 30 seconds)
	0		0,10,20,30,40,50	*			*		*		(every 10 minutes)
	0		0					*			*		*		(beginning of every hour)
	0		0					0,5,11,17	*	 	*		(at midnight, 6am, noon, 6pm)
	




fin.

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