$page->increment()
Increment a given field value
$page->increment(string $field, int $by = 1, int $max = null): Kirby\Cms\PageParameters
| Name | Type | Default |
|---|---|---|
| $field * | string |
– |
| $by | int |
1 |
| $max | int |
null |
Return type
This method does not modify the existing $page object but returns a new object with the changes applied. Learn more →
Parent class
Kirby\Cms\Page inherited from Kirby\Cms\ModelWithContent
Example
Kirby's objects are immutable. That means, when you modify an object like $page, $file etc. using a method like update(), changeTitle() and so on, a new object is returned. Therefore, you have to store the returned object in a new variable to be able to further work with it.
<?php $page->increment('likes') ?>Notice
The increment method will only work reliably with field values that PHP can parse into a valid integer. Otherwise the field value will be evaluated as zero and incremented to 1 or whatever $by value you pass.