In [http://code.google.com/p/phpquery/issues/list Issue Tracker] there is a list of [http://code.google.com/p/phpquery/issues/list?can=2&q=label%3APort plugins which are planned to be ported].
==JSON==
Port of [http://jollytoad.googlepages.com/json.js JSON] plugin.
{{{
$jsonString = phpQuery::toJSON( pq('form')->serializeArray() );
$array = phpQuery::parseJSON('{"foo": "bar"}');
}}}