Outputting Form Default Input Text in UTF-8

This section describes how to set form default input text with UTF-8 encoded characters.

From the previous section, I learned that UTF-8 byte sequences cannot be presented in &#xnnnn format in the Web page.

So I revised my test PHP script to use UTF-8 byte sequences directly to provide Web form default text:

<?php 
#- Web-Form-Input-UTF8-Revised.php
#- Copyright (c) 2015, HerongYang.com, All Rights Reserved.
#
  print('<html><head>');
  print('<meta http-equiv="Content-Type"'.
    ' content="text/html; charset=utf-8"/>');
  print('</head><body>'."\n");

# Default input text
  $input = 'Télévision';
  $input_hex = '54C3A96CC3A9766973696F6E'; 

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

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

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

# Display reply
  if ($reply) {
    print('<pre>'."\n");
    print('Content-Type:'."\n");
    print('  text/html; charset=utf-8'."\n");
    print('You have submitted:'."\n");
    print('  Text = '.$input."\n");
    print('  Text in HEX = '.strtoupper(bin2hex($input))."\n");
    print('  Default HEX = '.$input_hex."\n");
    print('</pre>'."\n");
  } 

  print('</body></html>');
?>

I tested this PHP script with IE. It worked correctly both before and after click the Submit button:
Processing Web Form Input in UTF-8

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