function 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

$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

File

includes/database/database.inc, line 2689

Core systems for the database layer.

Code

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