Specifications

retrieving
852
tables, joining, 216-217
tables, rows unmatched,
217-218
two-table joins,
214-216
with specific criteria,
212-214
vote database results, code,
422-423
return keyword, 140
return statement, 140
returning
from functions, 140
values from functions,
141-142
returning rows, 222-223
returning values, 81
assignment operator, 27
reusing code, 118-119
advantages of, 118-119
include() statement,
127-129
require() statement,
119-129
auto_append_file
(php.ini file), 126-127
auto_prepend_file
(php.ini file), 126-127
filename extensions,
120-121
PHP tags, 121
Web site templates,
121-126
reverse sort functions, 80
reverse sorts
associative arrays, 80
multidimensional arrays,
82
reverse spam, 287
REVOKE command,
192-193
rewind() function, 64
rewinddir($dir) function,
360
rewriting code, 462-463
RFC Editor Web site, 370,
389
RFCs (Requests for
Comments), 370
RGB (red, green, and
blue), 406
Rich Text Format. See RTF
risks for commercial Web
sites, 277-280
competition, 278
computer hardware failure,
278
crackers, 277-278
failure to attract business,
278
legislation and taxes, 279
service provider failures,
278
software errors, 279
system capacity limits, 279
rmdir() function, 361
root nodes (Web forum
tree structure), 714
rows
returning, 222-223
unmatched, 217-218
rows (tables), 173
values, 173
RSA, 296
RSARef Web site, 784
rsort() function, 80
RTF (Rich Text Format),
744-747
generating certificates,
758-762
software, 749
rtf.php, 752, 759
running
Apache, 790, 796
as services, 797-798
from console window,
797
Windows environment,
796
PHP, 782
as CGI Interpreter,
782-783
as modules, 782-783
runtime errors, 480-481
database interaction,
482-484
functions that don’t exist,
481-482
input data, 485
network connections,
484-485
reading/writing files, 482
S
S-HTTP (Secure Hypertext
Transfer Protocol), 331
scalar variables, 70
converting arrays to, 91-92
schemas
Book-O-Rama application,
194
database (PHPBookmark
application), 502
front page, 504-506
schemas (databases), 175
Book-O-Rama application,
184
scope
function scope, 136
global scope, 136
variable scope, 136-138
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