Retrieving Information from HTTP Requests
This chapter provides tutorial examples and notes about HTTP request. Topics include retrieving information from $_GET, $_POST, $_COOKIE, $_REQUEST, $_SERVER; promoting and registering $_REQUEST keys and values as global variables.
Predefined Variables Related to HTTP Requests
Operating System Information in $_SERVER
Web Server Information in $_SERVER
Information in $_GET and $_REQUEST
Registering $_REQUEST Keys as Global Variables
- $_GET contains information submitted with the GET method.
- $_POST contains information submitted with the POST method.
- $_COOKIE contains information stored as cookies.
- $_REQUEST is the sum of $_GET, $_POST, and $_COOKIE.
- $_SERVER contains information from the HTTP request, the Web server and the operating system.
Table of Contents
About This Book
Introduction and Installation of PHP 7.3
PHP Script File Syntax
PHP Data Types and Data Literals
Variables, References, and Constants
Expressions, Operations and Type Conversions
Conditional Statements - "if" and "switch"
Loop Statements - "while", "for", and "do ... while"
Function Declaration, Arguments, and Return Values
Arrays - Ordered Maps
Interface with Operating System
Introduction of Class and Object
Integrating PHP with Apache Web Server
►Retrieving Information from HTTP Requests
Creating and Managing Sessions in PHP Scripts
Sending and Receiving Cookies in PHP Scripts
Controlling HTTP Response Header Lines in PHP Scripts
Managing File Upload
MySQL Server Connection and Access Functions
Functions to Manage Directories, Files and Images
SOAP Extension Function and Calling Web Services
SOAP Server Functions and Examples
Localization Overview of Web Applications
Using Non-ASCII Characters in HTML Documents
Using Non-ASCII Characters as PHP Script String Literals
Receiving Non-ASCII Characters from Input Forms
"mbstring" Extension and Non-ASCII Encoding Management
Managing Non-ASCII Character Strings with MySQL Servers
Parsing and Managing HTML Documents
Configuring and Sending out Emails
Image and Picture Processing
Managing ZIP Archive Files
Managing PHP Engine and Modules on macOS
Managing PHP Engine and Modules on CentOS
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