DateInterval trong PHP

❮ PHP Date/Time Reference

Example

Calculate the interval between two dates, then format the interval:

$date1=date_create("2013-01-01");
$date2=date_create("2013-02-10");
$diff=date_diff($date1,$date2);

// %a outputs the total number of days
echo $diff->format("Total number of days: %a.");
?>

Definition and Usage

The date_interval_format() function is an alias of DateInterval::format().

The DateInterval::format() function is used to format the interval. 

Syntax

DateInterval::format(format)

Parameter Values

• % - Literal %
• Y - Year, at least 2 digits with leading zero (e.g 03)
• y - Year (e.g 3)
• M - Month, with leading zero (e.g 06)
• m - Month (e.g 6)
• D - Day, with leading zero (e.g 09)
• d - Day (e.g 9)
• a - Total number of days as a result of date_diff()
• H - Hours, with leading zero (e.g 08, 23)
• h - Hours (e.g 8, 23)
• I - Minutes, with leading zero (e.g 08, 23)
• i - Minutes (e.g 8, 23)
• S - Seconds, with leading zero (e.g 08, 23)
• s - Seconds (e.g 8, 23)
• F - Microseconds, at least 6 digits (e.g 004403, 235689)
• f - Microseconds (e.g 4403, 235689)
• R - Sign "-" when negative, "+" when positive
• r - Sign "-" when negative, empty when positive

Note: Each format character must be prefixed by a % sign!

Technical Details

31 total days
1 month, 0 days