Getting yesterday `date`

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LEARN ABOUT PHP

gmmktime

GMMKTIME(3)								 1							       GMMKTIME(3)

gmmktime - Get Unix timestamp for a GMT date

SYNOPSIS

       int  gmmktime  ([int   $hour  = gmdate("H")], [int  $minute = gmdate("i")], [int  $second = gmdate("s")], [int  $month = gmdate("n")], [int
       $day = gmdate("j")], [int  $year = gmdate("Y")], [int  $is_dst = -1])

DESCRIPTION

	Identical to mktime(3) except the passed parameters represents a GMT date. gmmktime(3) internally uses mktime(3) so only  times  valid	in
       derived local time can be used.

	Like  mktime(3),  arguments may be left out in order from right to left, with any omitted arguments being set to the current corresponding
       GMT value.

PARAMETERS

	      o $hour
		- The number of the hour relative to the start of the day determined by $month, $day and $year. Negative values reference the hour
		before midnight of the day in question. Values greater than 23 reference the appropriate hour in the following day(s).

	      o $minute
		-  The	number of the minute relative to the start of the $hour. Negative values reference the minute in the previous hour. Values
		greater than 59 reference the appropriate minute in the following hour(s).

	      o $second
		- The number of seconds relative to the start of the $minute. Negative values reference the second in the previous minute.  Values
		greater than 59 reference the appropriate second in the following minute(s).

	      o $month
		-  The	number	of  the month relative to the end of the previous year. Values 1 to 12 reference the normal calendar months of the
		year in question. Values less than 1 (including negative values) reference the months in the previous year in reverse order, so  0
		is December, -1 is November, etc. Values greater than 12 reference the appropriate month in the following year(s).

	      o $day
		-  The number of the day relative to the end of the previous month. Values 1 to 28, 29, 30 or 31 (depending upon the month) refer-
		ence the normal days in the relevant month. Values less than 1 (including negative values) reference  the  days  in  the  previous
		month,	so  0 is the last day of the previous month, -1 is the day before that, etc. Values greater than the number of days in the
		relevant month reference the appropriate day in the following month(s).

	      o $year
		- The year

	      o $is_dst
		- Parameters always represent a GMT date so $is_dst doesn't influence the result.

	      Note

		      This parameter has been removed in PHP 7.0.0.

RETURN VALUES

	Returns a integer Unix timestamp.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 7.0.0	|						    |
       |	|						    |
       |	|	 $is_dst parameter has been removed.	    |
       |	|						    |
       | 5.1.0	|						    |
       |	|						    |
       |	|  As of PHP 5.1.0, the  $is_dst  parameter  became |
       |	| deprecated.  As  a  result, the new timezone han- |
       |	| dling features should be used instead.	    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      gmmktime(3) basic example

	      <?php
	      // Prints: July 1, 2000 is on a Saturday
	      echo "July 1, 2000 is on a " . date("l", gmmktime(0, 0, 0, 7, 1, 2000));
	      ?>

SEE ALSO

       mktime(3), date(3), time(3).

PHP Documentation Group 													       GMMKTIME(3)

Shell Programming and Scripting