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Top Forums Shell Programming and Scripting Help with getting last date of previous month and first date of previous 4th month from current date Post 302783219 by machomaddy on Wednesday 20th of March 2013 06:21:19 AM
Old 03-20-2013
Help with getting last date of previous month and first date of previous 4th month from current date

I have requirment to get last date of previous month and the first date of previous 4th month:

Code:
Example:
Current date: 20130320 (yyyymmdd)
Last date of previous month: 20130228 (yyyymmdd)
First date of previous 4th month: 20121101 (yyyymmdd)

In my shell --date, -d, -v switches are not working for the date commandSmilie

Please help!!Smilie
 

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DATETIME.MODIFY(3)							 1							DATETIME.MODIFY(3)

DateTime::modify - Alters the timestamp

       Object oriented style

SYNOPSIS
public DateTime DateTime::modify (string $modify) DESCRIPTION
Procedural style DateTime date_modify (DateTime $object, string $modify) Alter the timestamp of a DateTime object by incrementing or decrementing in a format accepted by strtotime(3). PARAMETERS
o $object -Procedural style only: A DateTime object returned by date_create(3). The function modifies this object. o $modify -A date/time string. Valid formats are explained in Date and Time Formats. RETURN VALUES
Returns the DateTime object for method chaining or FALSE on failure. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.6 | | | | | | | Absolute date/time statements now take effect. | | | Previously, only relative parts were used. | | | | | 5.3.0 | | | | | | | Changed the return value on success from NULL to | | | DateTime. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 DateTime.modify(3) example Object oriented style <?php $date = new DateTime('2006-12-12'); $date->modify('+1 day'); echo $date->format('Y-m-d'); ?> Procedural style <?php $date = date_create('2006-12-12'); date_modify($date, '+1 day'); echo date_format($date, 'Y-m-d'); ?> The above examples will output: 2006-12-13 Example #2 Beware when adding or subtracting months <?php $date = new DateTime('2000-12-31'); $date->modify('+1 month'); echo $date->format('Y-m-d') . " "; $date->modify('+1 month'); echo $date->format('Y-m-d') . " "; ?> The above example will output: 2001-01-31 2001-03-03 SEE ALSO
strtotime(3), DateTime.add(3), DateTime.sub(3), DateTime.setDate(3), DateTime.setISODate(3), DateTime.setTime(3), DateTime.setTimes- tamp(3). PHP Documentation Group DATETIME.MODIFY(3)
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