Quick Reference
The PHP date_isodate_set() function sets a date according to the ISO 8601 standard, using weeks and day offsets (instead of using a specific date).
<?php
$date = date_create();
date_isodate_set($date, 2013, 1);
echo date_format($date, 'Y-m-d');
?>Output
2012-12-31Syntax
date_isodate_set(object, year, week, day)Parameters
| Parameter | Description |
|---|---|
| object | Specifies a DateTime object returned by date_create() (required) |
| year | Specifies the year of the date (required) |
| week | Specifies the week of the date (required) |
| day | Specifies the offset from the first day of the week (default is 1) |
PHP Notes:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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