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Building WML Sites

By Andres Baravalle
on February 21, 2001

Cellular phones supporting
WAP are slowly, but constantly spreading. Therefore,
it could be time for you to start building your WML
pages to access internet databases. As such, we will
show you how to build PHP/WML pages to access a MySQL
database which contains professors’ receiving hours
and exams timetables for a University. I’m testing
a beta service of this kind, prepared with Vitaveska
Lanfranchi, at www.scidecom.it.
There are some things you need
to know before starting. First, we are assuming that:

  1. You have correctly installed PHP and MySQL, and
    you have some experience in programminng with both languages.
    Your database needs to be properly installed as
  2. You have some knowledge of SQL; I suggest reading Database
    Normalization and Design Techniques
  3. You are running Apache and you can write .htaccess
    files; or you are running IIS and you can add mappings
    (or you can ask the system administrator to do
    it for you).
  4. You have some experience with WML; I suggest
    reading Introduction
    to WML, Apache, and PHP
The first step is telling your
server to process WML pages with PHP. Let’s see how
to do it.

Setting up the server

If you are using Apache, you
have to look for a .htaccess file in your home directory.
Then, you need to write the following lines in it:
<limit get post>

AddType application/x-httpd-php3 .wml

If you don’t have a file .htaccess,
simply write these lines in a text editor and save
the result as .htaccess in your home directory.
If you are using IIS instead,
you have to do the same you did when you installed
PHP in your server: look at the mappings of .php
and .php3 extensions and do the same for .wml extension.
Commonly you will find PHP mapped