DateInterval::createFromDateString
DatePeriod
DateInterval
PHP Manual

# DateInterval::format

(PHP 5 >= 5.3.0)

DateInterval::format — Formats the interval

### 설명

public string DateInterval::format ( string `$format` )

Formats the interval.

### 인수

`format`

  The following characters are recognized in the `format` parameter string.
  `format` character | Description | Example values
  --- | --- | ---
  Y | Years, numeric, at least 2 digits with leading 0 | 01, 03
  y | Years, numeric | 1, 3
  M | Months, numeric, at least 2 digits with leading 0 | 01, 03, 12
  m | Months, numeric | 01, 03, 12
  D | Days, numeric, at least 2 digits with leading 0 | 01, 03, 31
  d | Days, numeric | 1, 3, 31
  a | Total amount of days | 4, 18, 8123
  H | Hours, numeric, at least 2 digits with leading 0 | 01, 03, 23
  h | Hours, numeric | 1, 3, 23
  I | Minutes, numeric, at least 2 digits with leading 0 | 01, 03, 59
  i | Minutes, numeric | 1, 3, 59
  S | Seconds, numeric, at least 2 digits with leading 0 | 01, 03, 57
  s | Seconds, numeric | 1, 3, 57
  R | Sign "-" when negative, "+" when positive | -, +
  r | Sign "-" when negative, empty when positive | -,
  % | Literal % | %

  > Note: The prefix % is required in order for the format specifiers to work correctly.

### 반환값

Returns the formatted interval.

DateInterval::createFromDateString
DatePeriod
DateInterval
PHP Manual