Question

I’m trying to access rows of a fetchAll call (returns Zend_Db_Table_Rowset_Abstract) by a row’s primary key.

I was wondering what would be the easiest way of doing this, besides looping through and finding the desired row.

Answer 1

If I recall correctly, Zend_Db_Table_Rowset_Abstract is just passed an array (or something that acts like one), then as you iterate through it, it creates the Zend_Db_Table_Row_Abstract objects.

The best way may be to loop through once, and store the rows in an array, indexed by the primary key. That way you do one loop, then can access any row by the key.

Update: Just took a look at the source, here’s data that’s (eventually) passed to the rowset object:

$stmt = $this->_db->query($select);
$data = $stmt->fetchAll(Zend_Db::FETCH_ASSOC);
return $data;

When you iterate through the rowset for the first time, that original array is used to create the row objects. The data hasn’t been looped through before that point, so you’re not doing something that’s already been done.

So you have to do something like this to map rows to primary key (I haven’t used Zend_Db_* for a while, treat this a pseudocode):

$rows = array();
foreach($rowset as $row){
  //you could pull the primary key from Zend_Db_Table
  $rows[$row->id] = $row;
}

//now you can lookup by primary key
$rows[55]->name;

Of course you can extend the abstract rowset class and do this internally if you want.