Specifications

transactions, secure
862
transactions, secure,
328-332
Internet, 330-331
screening user input, 336
Secure Sockets Layer
(SSL), 332-335
secure storage, 336-337
user information, 328
user machines, 329-330
your system, 331-332
Transmission Control
Protocol (TCP), 333
Transport Layer Security
(TLS), 335
tree of articles (Web
forum application), 729
tree structure (Web forum
application), 713-714
tree node class (Web
forum application),
725-731
tree_node class, 713
triggering errors, 492
trim() function, 96, 232
Tripwire, 286
troubleshooting opening
files, 55-56
TrueType fonts, 411
tuples (tables), 173
two-dimensional arrays,
75-77
contents, accessing, 76
two-table joins, 214-216
type codes, conversion
specification type codes,
99
types of tables, 262-263
types (variables), 22-24
casts, 23
data types, 22
variable variables, 23-24
U
u switch (mysql
command), 186
uasort() function, 82
ucfirst() function, 100
ucwords() function, 100
uksort() function, 82
umask() function, 361
undefined functions, call-
ing, 131
uninterruptible power
supply (UPS), 302
UNISYS, LZW (Lempel Ziv
Welch), 404
UNISYS Web site, 404
UNIX, 787-789
Apache for, 798-799
installing
Apache, 787-789
mod_SSL, 787-789
MySQL, 783-787
PHP, 783-787
traceroute command, 285
UNIX time stamps, date()
function, 394-395
UNIX_TIMESTAMP func-
tion, 397-398
unlink() function, 63, 365
unmatched rows, 217-218
unpublish story.php, 596
unserialize() function, 451
unset() function, 37
UNSIGNED keyword, 196
unsubscribe() function,
688
unsubscribing (MLM),
687-689
update anomalies (Web
databases), avoiding,
177-178
UPDATE privilege, 190
UPDATE statement, 223
updating
privileges, 251
records, 223
vote database, code,
422-423
upload.html file, 353
upload.php, 660
upload.php file, 354
uploaded file listing,
code, 358-359
uploading
files, 352-353
displaying, 357
FTP functions, 385
HTML, 353-354
HTML forms, 352
PHP, writing, 354-357
problems, 358
online newsletters, 695,
697-698
multiple files, 698-702
UPS (uninterruptible
power supply), 302
UPS Web site, 276
url_encode() function, 374
url_fns.php, 502
USAGE privilege, 191
user auth fns.php, 595
user authentication, 506
input data, validating, 510
logging in, 513-517
logging out, 518
passwords, resetting,
521-526
passwords, setting,
519-521
registering, 507-511
user declared variables,
22
user defined sorts, multi-
dimensional arrays,
80-82
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