Extension:DateDiff

**MediaWiki extensions manual**
DateDiff Release status: stable
Implementation	Parser function
Description	Takes two dates and returns all intermediary days.
Author(s)	Kwisatz, Jeroen De Dauw
Latest version	0.3.1 (2016-10-29)
MediaWiki	1.23+
PHP	5.3+
Database changes	No
License	Creative Commons Attribution Share Alike 3.0
Download	Download extension Git ^[?]: Download Git master browse repository (GitHub) commit history code review README CHANGELOG
Example	sandbox.semantic-mediawiki.org
Hooks used ParserFirstCallInit
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Check usage and version matrix.

The DateDiff extension adds the #dates parser function that returns a list of intermediary days.

UsageEdit

The #dates parser function comes with two parameters |StartDate and |EndDate which is used as follows:

Syntax

{{#dates:|StartDate=2016/10/01 |EndDate=2016/10/02 }}

Result

2016-10-01T00:00:00+02:00,2016-10-02T00:00:00+02:00

ExamplesEdit

A typical use case are events in a semantic setup that span multiple days. In order to have the events appear on all days on a calendar provided by the Semantic Result Formats extension, you would use something like (requires the ParserFunctions extension):

{{#ifeq: {{{recurring}}} |no |{{#set: Has date={{#dates:|StartDate={{{from}}} |EndDate={{{till}}} }} |+sep=, }} }}

Number of days between two days (requires the Arrays extension):

{{#arraydefine:days|{{#dates:|StartDate=2015-04-01 |EndDate=2015-04-10 }} }}
{{#arraysize:days}}

InstallationEdit

Download and place the file(s) in a directory called DateDiff in your extensions/ folder.

Add the following code at the bottom of your LocalSettings.php:
```
require_once "$IP/extensions/DateDiff/DateDiff.php";
```
Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.