Zend_Db_Table_Rowset is an iterator for Zend_Db_Table_Row object collections. In general, you do not instantiate Zend_Db_Table_Rowset by itself; instead, you retrieve a Zend_Db_Table_Rowset as the return result from a call to Zend_Db_Table::find() or fetchAll(). You can then iterate through the collected Zend_Db_Table_Row objects and modify them as you wish.

The first thing to do is instantiate a Zend_Db_Table class.

<?php
// set up an adapter
require_once 'Zend/Db.php';
$params = array (
    'host'     => '127.0.0.1',
    'username' => 'malory',
    'password' => '******',
    'dbname'   => 'camelot'
);

$db = Zend_Db::factory('PDO_MYSQL', $params);

// set the default adapter for all Zend_Db_Table objects
require_once 'Zend/Db/Table.php';
Zend_Db_Table::setDefaultAdapter($db);

// connect to a table in the database
class RoundTable extends Zend_Db_Table {}
$table = new RoundTable();
?>
        

Next, retrieve many records from the database using Zend_Db_Table::find() with multiple keys, or by using Zend_Db_Table::fetchAll(); the returned result will be a Zend_Db_Table_Rowset object that will let you iterate through the individual Zend_Db_Table_Row objects in the record set.

<?php
// fetch many records from the table
$rowset = $table->fetchAll();

//
// $rowset is now a Zend_Db_Table_Rowset object composed of
// one Zend_Db_Table_Row object per record in the results
//
?>
        

Zend_Db_Table_Rowset implements the SPL Iterator interface, which means you can loop through Zend_Db_Table_Rowset objects like arrays using foreach(). Each value you retrieve this way will be a Zend_Db_Table_Row that corresponds to one record from the table; you can then view, modify, and save the properties for that record.

<?php
// connect to a table in the database
class RoundTable extends Zend_Db_Table {}
$table = new RoundTable();

// fetch many records from the table
$rowset = $table->fetchAll();

// display them all
foreach ($rowset as $row) {
    // $row is a Zend_Db_Table_Row object
    echo "<p>" . htmlspecialchars($row->nobleTitle) . " "
       . htmlspecialchars($row->firstName) . "'s "
       . "favorite color is " . htmlspecialchars($row->favoriteColor)
       . ".</p>\n";

    // update the number of times we have displayed this row,
    // (which maps to a column in the table "times_displayed")
    $row->timesDisplayed ++;

    // save the record with the new information
    $row->save();
}
?>