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