Some keywords: SQL Insert Update Zend_Db_Table_Row NOW() now function Zend_Db_Table Zend_Db_Expr

Use the SQL function NOW() in ZF:

$k = new My_Table();
$row = $k->createRow();
$row->datetime        = new Zend_Db_Expr('NOW()');
$row->save();

This works because DB Expr doesn't escape the string 'NOW()'. Yay.