lithium\data\Collection::first PHP Method

Overrides parent first() implementation to enable key/value-based filtering.

public first ( mixed $filter = null ) : object
$filter	mixed	In addition to a callback (see parent), can also be an array where the keys and values must match the property values of the objects being inspected.
return	object	Returns the first object found matching the filter criteria.

    public function first($filter = null)
    {
        return parent::first(is_array($filter) ? $this->_filterFromArray($filter) : $filter);
    }

Collection