Doctrine_manual-1-2-en

Chapter 10: Component Overview 179
$record->save();
echo $record->exists() ? 'Exists':'Does Not Exist'; // Exists
Function Callbacks for Columns
Doctrine_Record offers a way for attaching callback calls for column values. For example if
you want to trim certain column, you can simply use:
// test.php
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// ...
$record->call('trim', 'username');
Collection
Doctrine_Collection is a collection of records (see Doctrine_Record). As with records the
collections can be deleted and saved using Doctrine_Collection::delete() and
Doctrine_Collection::save() accordingly.
When fetching data from database with either DQL API (see Doctrine_Query) or rawSql
API (see Doctrine_RawSql) the methods return an instance of Doctrine_Collection by
default.
The following example shows how to initialize a new collection:
// test.php
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// ...
$users = new Doctrine_Collection('User');
Now add some new data to the collection:
// test.php
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// ...
$users[0]->username = 'Arnold';
$users[1]->username = 'Somebody';
Now just like we can delete a collection we can save it:
$users->save();
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Accessing Elements
You can access the elements of Doctrine_Collection with set() and get() methods or
with ArrayAccess interface.
// test.php
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// ...
$userTable = Doctrine_Core::getTable('User');
$users = $userTable->findAll();
Accessing elements with ArrayAccess interface
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