If any field length in json string longer then ~60000 symbols then field after CJSON->decode will be empty
Fix: I don't fixed it in CJSON class, in php>5.2.0 internal function json_decode presents. For compatible with old php versions i do this for example:
if(!function_exists("json_decode"))

{ //There is a bug in CJSON.decode. If data longer than ~60000 symbols it will be decoded as empty. json_decode function is internal php function since 5.2.0 and have no this bug $json = new CJSON(); $rcv = $json->decode($reply, true); }

else

{ $rcv = json_decode($reply, true); }