====== rowLock ======
~~NOTOC~~
<WRAP important>
Information regarding whether row and column locking support is only available by reading the driver source code. This needs updating
</WRAP>
<WRAP info>
Not all databases support row locking, some implementations of this function enable column locking. See the driver guide for more details
</WRAP>
<WRAP right box>
== Syntax ==
  bool rowLock (
       string $csvTableList,
       optional string $whereStatement='',
       optional string $columnToLock
       )
</WRAP>
===== Description =====
The function ''rowLock()'' creates a row, and possible column lock for the duration of a transaction. The function returns true or false depending on the success of the row lock. If a transaction has not already been started, one is begun.
-----------------------------------------
===== Usage =====
<code php>
$db->startTrans();
$db->rowLock($table,"rowid=$id");
$db->execute($SQL1);
$db->execute($SQL2);
$db->completeTrans();
</code>