dateinterval.createfromdatestring(3) [php man page]

DATEINTERVAL.CREATEFROMDATESTRING(3)					 1				      DATEINTERVAL.CREATEFROMDATESTRING(3)

DateInterval::createFromDateString - Sets up a DateInterval from the relative parts of the string

SYNOPSIS

       publicstatic DateInterval DateInterval::createFromDateString (string  $time)

DESCRIPTION

	Uses the normal date parsers and sets up a DateInterval from the relative parts of the parsed string.

PARAMETERS

	      o $time
		-  A  date with relative parts. Specifically, the relative formats supported by the parser used for strtotime(3) and DateTime will
		be used to construct the DateInterval.

EXAMPLES

       Example #1

	      Parsing valid date intervals

	      <?php
	      // Each set of intervals is equal.
	      $i = new DateInterval('P1D');
	      $i = DateInterval::createFromDateString('1 day');

	      $i = new DateInterval('P2W');
	      $i = DateInterval::createFromDateString('2 weeks');

	      $i = new DateInterval('P3M');
	      $i = DateInterval::createFromDateString('3 months');

	      $i = new DateInterval('P4Y');
	      $i = DateInterval::createFromDateString('4 years');

	      $i = new DateInterval('P1Y1D');
	      $i = DateInterval::createFromDateString('1 year + 1 day');

	      $i = new DateInterval('P1DT12H');
	      $i = DateInterval::createFromDateString('1 day + 12 hours');

	      $i = new DateInterval('PT3600S');
	      $i = DateInterval::createFromDateString('3600 seconds');
	      ?>

RETURN VALUES

	Returns a new DateInterval instance.

PHP Documentation Group 										      DATEINTERVAL.CREATEFROMDATESTRING(3)

DATETIME.DIFF(3)							 1							  DATETIME.DIFF(3)

DateTime::diff - Returns the difference between two DateTime objects

       Object oriented style

SYNOPSIS

       public DateInterval DateTime::diff (DateTimeInterface  $datetime2, [bool  $absolute = false])

DESCRIPTION

       DateInterval DateTimeImmutable::diff (DateTimeInterface	$datetime2, [bool  $absolute = false]) DateInterval DateTimeInterface::diff (Date-
       TimeInterface  $datetime2, [bool  $absolute = false])

       Procedural style
       DateInterval date_diff (DateTimeInterface  $datetime1, DateTimeInterface  $datetime2, [bool  $absolute = false])

	Returns the difference between two DateTimeInterface objects.

PARAMETERS

	      o $datetime
		- The date to compare to.

	      o $absolute
		- Should the interval be forced to be positive?

RETURN VALUES

	The DateInterval object representing the difference between the two dates or FALSE on failure.

EXAMPLES

       Example #1

	      DateTime.diff(3) example

	      Object oriented style

	      <?php
	      $datetime1 = new DateTime('2009-10-11');
	      $datetime2 = new DateTime('2009-10-13');
	      $interval = $datetime1->diff($datetime2);
	      echo $interval->format('%R%a days');
	      ?>

	      Procedural style

	      <?php
	      $datetime1 = date_create('2009-10-11');
	      $datetime2 = date_create('2009-10-13');
	      $interval = date_diff($datetime1, $datetime2);
	      echo $interval->format('%R%a days');
	      ?>

	      The above examples will output:

	      +2 days

       Example #2

	      DateTime object comparison

	      Note

		      As of PHP 5.2.2, DateTime objects can be compared using comparison operators.

	      <?php
	      $date1 = new DateTime("now");
	      $date2 = new DateTime("tomorrow");

	      var_dump($date1 == $date2);
	      var_dump($date1 < $date2);
	      var_dump($date1 > $date2);
	      ?>

	      The above example will output:

	      bool(false)
	      bool(true)
	      bool(false)

SEE ALSO 
DateInterval.format(3), DateTime.add(3), DateTime.sub(3).
PHP Documentation Group 													  DATETIME.DIFF(3)