Add Tags to a Newly Created Entry With PHP in Craft 3

Question

I am able to successfully create new entries with PHP when I am using basic field values that are Rich Text or Plain Text fields, but am unsure how to add Tags to an entry.

So my entry already has a field called 'tags' on it, and I thought that maybe it wanted an array of strings like so:

$entry->setFieldValues([
   'tags' => array('someCoolTag', 'tagasaurus rex')
]);

I admit I do not really understand how tags work behind the scenes, and would like to correct that. Any help is great.

Answer 1

Tags are normal Elements like Entries, Categories, Users and so on.. In order to relate a Tag to another element, you need to insert the array of those elements like you are used to with every other field

$existingTag = Tag::find()->title('whatever')->one();

$tag = new Tag();
$tag->groupId = 1; //<-- insert your group id here
$tag->title = "something";
Craft::$app->getElements()->saveElement($tag);

$entry->setFieldValues([
   'tags' => [$tag->id, $existingTag->id]
]);