C

CA (certificate authority), setting up, 294–296

cache

benchmarking, 71

copies, noting, 69

Del.icio.us API layer, 280–283

Google API results, enhancing, 130–132

performance, 300

portal page, improving, 58

callDelicious function, 281

canceling FedEx shipments, 192

capitalization, HTML, 15

carat (^), 41

CarrierCode element, FedEx API, 182

categories

Amazon search, parsing, 166–167

eBay API

detail level, 215

displaying, 218–219

ID, 228

items for sale, retrieving, 219–221

organizing, 214–215

retrieving, 216–218

searches within, 223–225

secondary, 233

site ID, 215–216

Google search matches, listed, 119

RSS feed, 327

CategoryID, eBay, 228

CBC feed address, 59

cc namespace (Creative Commons license), 9–20, 65

certificate authority (CA), setting up, 294–296

certification process, FedEx API, 178

characters, XML encoding, 13–14

CharityListing, eBay, 206

child element, XML, 11

Chinese auction, 205

class

character, defining, 41

first character negating anything within, 41

client

certificate

NuSOAP, 293

PayPal, 250

fault

Amazon, 161

Google, 125, 126

objects, NuSOAP, 121

comments

cached copies, noting, 69

printing, 51

RSS feed, 328

community considerations

developer chats, 298–299

development forums, 298

development sandbox, 299

sample code, 298

competitive usefulness, 302

complex data types, 313–314

confirming orders, PayPal, 243–244

connection

closing during Google transaction, 113

ID, database function (common_db.php), 316

consuming Web feeds

browsing site, 28

copying feed structure, 28–29

content

Atom feed specification, 331

XML namespace, 91

Content-Length header, Google, 114

Content-Type header

Atom specification, 66

directory, using to ensure correct setting, 74

feed with basic content, producing, 67

Google transactions, 114

HTTP header, 68

contributors, Atom feed specification, 330

copying feed structure, 28–29

copyright restrictions, RSS, 322

corporate environments, 54

country eBay listing, 228

creating Web APIs. See producing Web APIs

Creative Commons license

cc namespace, 19–20, 65

Flickr images, 276

cross-site scripting attack (XSS), 9–10

css classes, 51

cURL

dependencies, building development system, 337

eBay official time, obtaining, 210–211

FedEx API support, 178–179

PayPal transaction details request, 248, 250

phpinfo() development system, 335

curly braces ({}), 41

currency, eBay listing, 204–205, 228

CustomerTransactionIdentifier, FedEx

canceling shipments, 192–193

described, 180

services available for each, 185