Specifications
public key encryption
850
public key encryption,
295-296
public keys, Gnu Privacy
Guard (GPG), 340
exporting, 340
importing, 341
publish story.php, 596
publish.php, 596
purchase.php script
(Shopping Cart applica-
tion), 568-572
putenv() function, 367-
368
PX-PHP Code Exchange
Web site, 804
Q
queries, EXPLAIN
statement, 257-260
query select() function,
609
querying, Web databases,
232
connections, setting up,
234-235
disconnecting from
databases, 238
input data, 232-233
inserting new information
into databases, 238-241
mysql_db_query()
function, 236
mysql_query() function,
235-236
retrieving results, 236-237
selecting databases, 235
quotes, magic quotes,
448-449
enabling, 546
R
r+ file mode, 54
RAID (Redundant Array
of Inexpensive Disks),
301
range() function, 71
RDBMSs (relational
database management
systems), 208
advantages, 67
readdir($dir) function,
359
readdir() function, 359
readfile() function, 61
reading
files, 52, 361-364
feof() function, 60
fgetc() function, 62-63
fgetcsv() function, 61
fgets() function, 60
fgetss() function, 61
file() function, 62
fopen() function, 60
fpassthru() function, 62
fread() function, 63
readfile() function, 61
runtime errors, 482
vieworders.php
interface, 59-60
from directories, 358-360
reading email, 371
Warm Mail application,
637-647
mailbox contents,
viewing, 640-643
message headers,
viewing, 647
messages, 643-647
selecting accounts,
637-640
real-world objects, model-
ing (Web databases),
176
recommend urls() func-
tion, 534
recommend.php, 501
recommendations,
implementing, 532-536
recommending
bookmarks, 500
records
deleting, 225
updating, 223
records (tables), 173
recursive functions,
143-144
red, green, and blue
(RGB), 406
red-button.png file, 414
Redundant Array of
Inexpensive Disks
(RAID), 301
redundant data, avoiding
(Web databases),
176-178
reference operator, 29
REGEXP keyword, 214
register() function, 511
registering
session variables, 433-436
user authentication,
507-511
register_form.php, 501
register_new.php, 501
regular expressions,
109-114
* symbol, 111
+ symbol, 111
branching, 112
caret symbol (^), 112
character classes, 110-111
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