update schedules, 10
updates, query, selecting, 54–55
URI socket, opening, 80
URL
Amazon
API call, performing, 151
list id, 171
Atom feed specification, 330
backslashes, replacing, 51
combining, 36–38
component parts, splitting into, 113
Del.icio.us API, 281
document, defining, 322
documentation, RSS feed, 323
eBay, encoding, 203
exact, making sure you have, 26
file, enclosure element, 33–34
Google, target for link, 134
HTML page, 322
keywords, monitoring, 139, 140–141
link, Atom feed specification, 330
PayPal
Instant Payment Notification, 240
sandbox, 238
Permanent URL in Perl, 20, 65
relative, replacing with absolute, 36–38
request string for feed, 24
SimpleXML, 30
source, 36–37
user
Flickr API
id, 271–272
retrieving images from particular, 272
REST authentication, 303
User-Agent, Del.icio.us, 276
username, password, and other default values, 315–316
UTF-8
encoding, 27
Google transactions, 114, 115, 121
utility functions, Web feeds
combining URLs, 36–38
examining and retrieving images, 44–45
formatting tags, 46–47
IFrames, 46
images
links, retrieving all within string, 40–42
retrieving and serving, 43–44
tags, 38–40
link tags, 45–46
stripping URLs of filenames, 35–36