db_next_id

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

int $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

int An integer number larger than any number returned before for this sequence.

See also

\Drupal\Core\Database\Connection::nextId()

Related topics

Database abstraction layer

Allow the use of different database servers using the same code base.

File

core/includes/database.inc, line 482

Core systems for the database layer.

Code

function db_next_id($existing_id = 0) {
  return Database::getConnection()->nextId($existing_id);
}