Описание

Updates current objects variables into the database. if you supply it with a dataObject, as an argument, it will only update the differences between the new and old.

if called with DB_DATAOBJECT_WHEREADD_ONLY as the argument, the update request is built based on the whereAdd values, rather than the primary key. This enables global updates to be performed, rather than single row ones.

Параметр

• DataObject $original - if provided the update query will be built from the difference between the current and original dataobject.

Возвращаемое значение

int number of rows affected or FALSE on failure

Throws

Заметка

Эта функция не должна вызываться статически.

Пример

$person = new DataObjects_Person;
$person->get(12);
$person->name='fred';
$person->update();     

$person = new DataObjects_Person;
$person->get(12);
$original = clone($person); // clone is emulated in php4 for compatibility reasons. 
$person->name='fred';
$person->update($original);

SELECT * FROM person WHERE id = 12
UPDATE person SET name='fred', age='21', eyes='blue' WHERE id = 12

SELECT * FROM person WHERE id = 12
UPDATE person SET name='fred'  WHERE id = 12

$person = new DataObjects_Person;
$person->removed=1;
$person->whereAdd('age > 21');
$person->update();

SELECT * FROM person WHERE id = 12;
UPDATE person SET removed=1 WHERE age > 21