insert and geid insert different

DB::table('users')->insert(
    array('email' => 'john@example.com', 'votes' => 0)
);

Inserting Records Into A Table With An Auto-Incrementing ID

If the table has an auto-incrementing id, use insertGetId to insert a record and retrieve the id:

$id = DB::table('users')->insertGetId(
    array('email' => 'john@example.com', 'votes' => 0)
);