MDB_Common::nextId()
MDB_Common::nextId() – returns the next free id of a sequence
Synopsis
require_once 'MDB.php';
resource nextId
(
string $seq_name
, boolean
$onDemand
= true
)
Описание
Parameter
-
string
$seq_name -
name of the sequence
-
boolean
$onDemand -
when TRUE the sequence is automatic created, if it not exists.
Return value
resource - a free id or a
MDB_Error, if fail
Throws
| Error code | Error message | Reason | Solution |
|---|---|---|---|
| MDB_ERROR_NOT_CAPABLE | NULL | Function is not supported by the database backend | Switch to another database system, if you really need this feature. |
| MDB_ERROR_NOT_LOCKED | NULL | Locking of sequence table fails | Database specific, check documention of your database, |
| MDB_ERROR_NOSUCHTABLE | NULL | Sequence table was not found | Try to create a new sequence or if you are sure, a sequence was already create, check database integrity |
Замечание
This function can not be called statically.