Index

A Guide to the Index

The index is arranged hierarchically, in alphabetical order, with symbols preceding the letter A. Most second-level entries and many third-level entries also occur as first-level entries. This is to ensure that users will find the information they require however they choose to search for it.

Symbols

$ sign

identifying variables using, 68

$argc/$argv[] variables, 728

accepting command-line arguments, automating tasks, 728

$GLOBALS array

global variables, accessing, 99

$HTTP_ arrays, 109

environment variables, handling, 84

CGI, 85

cookies, 85

HTTP header, 86

POST, 85

system & GET, 84

$HTTP_*_VARS associative array, 851

security advantages, 852

register_globals, replacing, 851

$HTTP_ACCEPT_LANGUAGE global variable, 818

accepting languages listed, internationalization example, 818

$HTTP_POST_FILES global variable, 255

uploading files from clients, POST example, 255

$PHP_SELF built-in variable, 185

action attribute, HTML forms, 185

$row instance variable

database abstraction layer, PostgreSQL, 686

$this keyword

class members, referencing, 118

:: class-function call operator, 128

examples using, 128

inheritance use, syntax, 128

@ operator, 159

error messages, example suppressing, 159