1 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

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

File

core/includes/database/database.inc, line 2779
Core systems for the database layer.

Code

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