The new fields introduced in the IPTC Core schema as mentioned in
http://iptc.cms.apa.at/std/Iptc4xmpCore/1.0/documentation/Iptc4xmpCore_1.0-doc-C\
panelsUserGuide_13.pdf

Creator's Contact Info:City
Creator's Contact Info:Country
Creator's Contact Info:Address
Creator's Contact Info: Postal Code
Creator's Contact Info:State/Province
Creator's Contact Info:Email(s)
Creator's Contact Info:Phone(s)
Creator's Contact Info:WebURL(s)
ISO Country Code
Intellectual genre
Location
Rights Usage Terms
Subject Code
IPTC Scene

We need the field Ids of these fields to read contents from id3 library, eg
$iptc['2#120'] = "caption"

But I can't find the field ids for these new fields. Any helps appreciated!