Processing Web Form Input in ASCII

This section describes how to display a Web form and process form input data in ASCII.

To show you how Web form input data can be processed with a PHP script, I wrote this short test script to display a simple Web form, and process the input in one script:

#- Web-Form-Input-ASCII.php
#- Copyright (c) 2005 All Rights Reserved.

# Default input text
  $input = "Television";

# Form reply determination
  $reply = isset($_REQUEST["Submit"]);

# Process form input data
  if ($reply) {
    if (isset($_REQUEST["Input"])) {
      $input = $_REQUEST["Input"];

# Display form
  print('<input type="Text" size="40" maxlength="64"'
   . ' name="Input" value="'.$input.'"/><br/>');
  print('<input type="Submit" name="Submit" value="Submit"/>');

# Display reply
  if ($reply) {
    print('You have submitted:'."\n");
    print('  Text = '.$input."\n");


After moving this PHP script file to Apache server document directory, I tested it with Internet Explorer (IE) with this URL: http://localhost/Web-Form-Input-ASCII.php. I saw a Web page with a form that has the suggested input value and a submit button.

After clicking the submit button, I saw a returning Web page with the same form and a reply section, which confirmed that the input text were correctly received by the PHP script.

Processing Web Form Input in ASCII
Processing Web Form Input in ASCII

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 Encoding Error

 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

 Chinese Text Encoding Conversion and Corruptions

 Archived Tutorials


 Full Version in PDF/EPUB