function db_next_id
| 7.x database.inc | db_next_id($existing_id = 0) |
Retrieves a unique id.
Use this function if for some reason you can't use a serial field. Using a serial field is preferred, and InsertQuery::execute() returns the value of the last ID inserted.
Parameters
$existing_id: After a database import, it might be that the sequences table is behind, so by passing in a minimum ID, it can be assured that we never issue the same ID.
Return value
An integer number larger than any number returned before for this sequence.
Related topics
4 calls to db_next_id()
- actions_save in drupal-7.x/
includes/ actions.inc - Saves an action and its user-supplied parameter values to the database.
- batch_process in drupal-7.x/
includes/ form.inc - Processes the batch.
- DatabaseNextIdCase::testDbNextId in drupal-7.x/
modules/ simpletest/ tests/ database_test.test - Test that the sequences API work.
- user_save in drupal-7.x/
modules/ user/ user.module - Save changes to a user account or add a new user.
File
- drupal-7.x/
includes/ database/ database.inc, line 2654 - Core systems for the database layer.
Code
function db_next_id($existing_id = 0) {
return Database::getConnection()->nextId($existing_id);
}