Steps and Components Involved

This section describes steps and application components involved in inputting non-ASCII characters through Web forms.

In order to capture input text from Web forms and display it back on Web pages properly, you need to understand how an input text is being collected by the Web browser, and delivered to the PHP engine through various application components. Here is a simplified diagram that shows the steps and application components involved in this process:

F1. Key Sequences from keyboard
      |
      |- Web browser
      v
F2. HTTP Request
      |
      |- Web server
      v
F3. CGI input
      |
      |- PHP engine
      v
F4. CGI output
      |
      |- Web server
      v
F5. HTTP response (HTML document)
      |
      |- Web browser
      v
F6. Characters on the screen

If you decided to use UTF-8 encoding to handle non-ASCII characters, you need to make sure that all application components mentioned in the above diagram are friendly to UTF-8 encoding. See the following picture:
Inputting non-ASCII Characters on Web Forms

Last update: 2015.

Table of Contents

 About This Book

 PHP Installation on Windows Systems

 Integrating PHP with Apache Web Server

 charset="*" - Encodings on Chinese Web Pages

 Chinese Characters in PHP String Literals

 Multibyte String Functions in UTF-8 Encoding

Input Text Data from Web Forms

Steps and Components Involved

 Processing Web Form Input in ASCII

 Processing Web Form Input in Latin1

 Entering Latin1 Characters with Alt Keycodes

 Testing Latin1 Alt Keycodes with IE

 Processing Web Form Input in UTF-8

 Outputting Form Default Input Text in UTF-8

 Testing Alt Keycodes with IE on a UTF-8 Web Page

 Input Chinese Text Data from Web Forms

 MySQL - Installation on Windows

 MySQL - Connecting PHP to Database

 MySQL - Character Set and Encoding

 MySQL - Sending Non-ASCII Text to MySQL

 Retrieving Chinese Text from Database to Web Pages

 Input Chinese Text Data to MySQL Database

 References

 PDF Printing Version