If you are not sure where a particular value you entered into the IPTC block in photoshop or any other software is being stored, simply run a foreach loop thru the block and find out:
(Insert a new paragraph in the beggening of the first echo)
$size = GetImageSize ("testimg.jpg", &$info);
$iptc = iptcparse($info["APP13"]);
foreach($iptc as $key => $value)
{
echo "<b>IPTC Key:</b> $key <b>Contents:</b> ";
foreach($value as $innerkey => $innervalue)
{
if( ($innerkey+1) != count($value) )
echo "$innervalue, ";
else
echo "$innervalue";
}
}
