Controlling HTTP Response Header Lines in PHP Scripts
This chapter provides tutorial examples and notes about HTTP response header line. Topics include understanding of HTTP response structure and standard header lines; controling header lines using the header() function; dumping HTTP responses to view header lines; IIS and PHP engine added header lines for static files and PHP scripts; Location, Content-Type, and Content-Disposition header lines.
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What Is an HTTP Response
HTTP Response Header Lines
header() - Inserting a Raw Header Lines
HttpRequestGet.php - Viewing Header Lines
Response Header Lines of Static Files
HttpHeaderLines.php - Examples of Inserting Header Lines
Location: - Forcing the Browser to Redirect to Another URL
Content-Type: - Generating Non-HTML Response Body
Content-Disposition: - Sending Files for Downloading
- HTTP response header lines must be generated before any other outputs from the script, unless you
have the output_buffering turned on.
- Setting header lines in PHP is simple - one built-in function, header(), does everything for you.
- "Location" is a interesting header line. It tells the browser to redirect itself to
a new URL.
- "Content-disposition" tells the browser to prepare for downloading the entity body.
- I like the powerful function, readfile(), reading the content of a file and sending it
to the HTTP response directly.
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
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
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
Configuring and Sending out Emails
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