| Parameter | Explaination | Values | Allowed modes | 
|---|---|---|---|
| mode | Sets display mode. | 
                  
  | 
                |
| time | Sets referenced time. | 
                  
  | 
                countdown countup  | 
              
| unit | Sets display unit. | 
                  
  | 
                countdown countup  | 
              
| span | Sets duration. | 
                  
  | 
                countdown | 
| base | Sets base of number. | 
                  
  | 
                unix single  | 
              
| digit | Sets decimal digit. | 
                  
  | 
                unix countup countdown  | 
              
| space | Sets space character. | 
                  
  | 
                him | 
| line | Sets line character. | 
                  
  | 
                simple plain  | 
              
| format | Specifies custom time format. | 
                  
  | 
                custom | 
| style | 
                  
  | 
                
| Format character | Description | Example returned values | 
|---|---|---|
| Day | --- | --- | 
| d | Day of the month, 2 digits with leading zeros | 01 to 31 | 
| D | A textual representation of a day, three letters | Mon through Sun | 
| j | Day of the month without leading zeros | 1 to 31 | 
| l (lowercase 'L') | A full textual representation of the day of the week | Sunday through Saturday | 
| N | ISO-8601 numeric representation of the day of the week (added in PHP 5.1.0) | 1 (for Monday) through 7 (for Sunday) | 
| S | English ordinal suffix for the day of the month, 2 characters | st, nd, rd or th. Works well with j | 
| w | Numeric representation of the day of the week | 0 (for Sunday) through 6 (for Saturday) | 
| z | The day of the year (starting from 0) | 0 through 365 | 
| Week | --- | --- | 
| Month | --- | --- | 
| F | A full textual representation of a month, such as January or March | January through December | 
| m | Numeric representation of a month, with leading zeros | 01 through 12 | 
| M | A short textual representation of a month, three letters | Jan through Dec | 
| n | Numeric representation of a month, without leading zeros | 1 through 12 | 
| t | Number of days in the given month | 28 through 31 | 
| Year | --- | --- | 
| L | Whether it's a leap year | 1 if it is a leap year, 0 otherwise. | 
| Y | A full numeric representation of a year, 4 digits | Examples: 1999 or 2003 | 
| y | A two digit representation of a year | Examples: 99 or 03 | 
| Time | --- | --- | 
| a | Lowercase Ante meridiem and Post meridiem | am or pm | 
| A | Uppercase Ante meridiem and Post meridiem | AM or PM | 
| B | Swatch Internet time | 000 through 999 | 
| g | 12-hour format of an hour without leading zeros | 1 through 12 | 
| G | 24-hour format of an hour without leading zeros | 0 through 23 | 
| h | 12-hour format of an hour with leading zeros | 01 through 12 | 
| H | 24-hour format of an hour with leading zeros | 00 through 23 | 
| i | Minutes with leading zeros | 00 to 59 | 
| s | Seconds with leading zeros | 00 through 59 | 
| v | Milliseconds (added in PHP 7.0.0). Same note applies as for u. | Example: 654 | 
| Timezone | --- | --- | 
| e | Timezone identifier (added in PHP 5.1.0) | Examples: UTC, GMT, Atlantic/Azores | 
| I (capital i) | Whether or not the date is in daylight saving time | 1 if Daylight Saving Time, 0 otherwise. | 
| O | Difference to Greenwich time (GMT) in hours | Example: +0200 | 
| P | Difference to Greenwich time (GMT) with colon between hours and minutes (added in PHP 5.1.3) | Example: +02:00 | 
| T | Timezone abbreviation | Examples: EST, MDT ... | 
| Z | Timezone offset in seconds. The offset for timezones west of UTC is always negative, and for those east of UTC is always positive. | -43200 through 50400 | 
| Full Date/Time | --- | --- | 
| c | ISO 8601 date (added in PHP 5) | 2004-02-12T15:19:21+00:00 | 
| r | » RFC 2822 formatted date | Example: Thu, 21 Dec 2000 16:01:07 +0200 | 
| U | Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) | See also time() |