Get tt_content uid
php, typo3
Solution
You fetch all tt_content's data in array:
$this->cObj->data
ie:
$uidOfCE = $this->cObj->data['uid'];
If you're using Extbase of course you need to get the content object first, ie:
$this->contentObj = $this->configurationManager->getContentObject();
debug($this->contentObj->data, "current tt_content's data");
Problem
I am developing an extension that allows admins to save stuff to the database. And I want that each instance of the extension should have it's own Id in the database. Is there some way to get the tt_content uid (which I guess is the extension instance Id) in the extension php.