$j_decoded = utf8_decode(json_decode($j_encoded));
РЕДАКТИРОВАТЬ или, если быть более точным $j_encoded = json_encode($j_encoded);
$j_decoded = json_decode($j_encoded);
, нет необходимости в en / decoding utf8
AOP Alliance is a set of interfaces that multiple frameworks implement (see AOP Alliance Motivations), including both Guice and Spring.
AOP Alliance was chosen for Guice because it has a high capability and a simple API.
The Guice wiki has an AOP guide.