index_G

G

G format, date function, 281

g format, date function, 281

GD graphics, installation and configuration requirements, 218–219

GET method, 27, 50

$_GET variable, 36

getenv() function, 254

gethostbyaddr() function, 296–297

gethostbyname() function, 296–297

global variables, 35

graphical user interface (GUI), 84

group and user files

Basic HTTP authentication, 137–138

database-driven authentication, 142–144

validation, 144–149

GUI (graphical user interface), 84

gunzip utility, 3

gzip tool, 3