<?
echo “”;

Should be:

<?php
echo “”;

1. As stated by rattiepa, util.php has missing quotes on $mysql_db = webapp; line. It should read $mysql_db = "webapp";

2. The forms.php file tests the $_POST array for redirections from other pages. Depending on from where you've come, some of the array parameters may not exist which gives undefined index warnings. You can get rid of these warings by checking that the parameters exist before attempting to copy them from $_POST into new variables. Do this using a simple if statement for each variable so that:

$user = make_safe($_POST['user']);

becomes:

if(isset($_POST['user'])){
$user = make_safe($_POST['user']);
}

3. Similarly, to get rid of the undefined index error in manage.php change:

$delete = make_safe($_GET['delete']);
if($delete !== NULL){
$delete_contact = "delete from contacts where id='$delete'";
if (!mysql_query($delete_contact)){
die('Error: ' . mysql_error());
}
}

to:

if(isset($_GET['delete'])){
$delete = make_safe($_GET['delete']);

if($delete !== NULL){
$delete_contact = "delete from contacts where id='$delete'";
if (!mysql_query($delete_contact)){
die('Error: ' . mysql_error());
}
}
}

4. To get the cool title stuff working for the index page add "/webapp/index.php" => "- Home" to the $pages associative array in the header.php file for the home page. I think Paul just forgot this line.

I appreciate the time you spent on this tutorial, very helpful for someone just starting. (y)

I like the blog , please update it…

I am really trying to learn this, but reading books and stuff of that sort is just boring. Hands on is more my style and this is just what I was looking for, excellent work.

Typos and other issues:
In util.php
Line 8, quotes missing, should propably be:
$mysql_db = “webapp”;

In functions.php
Line 16, variable $msql_host is incorrect, “y” is missing, should be $mysql_host. If MySql and web service in both on the same computer, this doesn’t matter, because default mysql host is localhost.

I first installed both MySql and web service on a LAMP-computer, but then I tried using IIS on W2003 as web service and MySql on LAMP. Well, I partly got it working. Register works OK if you correct the typos, but most of the pages/actions does not. If you are looking for similar application like this, I think you can correct the errors with reasonable effort.

One of the things with IIS & Windows, PHP and MySql is that two latter must be compatible. MySql 5.x requires PHP 5.x.
Other thing is installing PHP to work with IIS and the PHP to work with MySql. I couldn’t get the installer to work, made a manual installation and got the PHP’s MySql Extensions in working order, but that required some perseverance.

Paul one more request … Please come up with all your knowledge in this blog..lol..

Cheers
Bro…

MySql command line interface:
Logging on:
mysql -u username -p

Deleting the database:
drop database webapp;

Selecting the database when logged on:
use webapp

I installed my Ubuntu LAMP on my Windows workstation by installing first VmWare Player:
http://www.vmware.com/products/player/

To create Ubuntu (or any Linux) virtual machine, create your template here:
http://www.easyvmx.com/

I’ve studying building Web App using this post and I’m getting there, have learned a lot.

Heres my suggestions to get this even smoother My LAMP (Ubuntu Dapper drake 6.06) needed these lines to RUN_THIS_FIRST.sql file, before the other commands:

create database webapp;
use webapp;

After these changes phpMyAdmin does it all: Creates database, `contacts` and `users` tables and all th fields.

If some one wants to know how I’ve built my Web App on Ubuntu LAMP, check these:
Basic installation:
http://www.debianadmin.com/ubuntu-lamp-server-installation-with-screenshots.html

Basic installation plus phpMyAdmin etc.:
http://ry.akgeeks.net/?p=9

Greetings from Colombia (South america).

att,

Mario Benavides Jurado
Web Developer

Kali Xponia megale

Thanks for pointing it out,
Paul

Thanks for this very nice tutorial, but I did run into a warning:

Warning: Cannot modify header information – headers already sent by (output started at C:\Program Files\xampp\htdocs\webapp\header.php:23) in C:\Program Files\xampp\htdocs\webapp\manage.php on line 9

it occured when, after login, I went to manage contacts.

Any idea?

Many thanks and best regards,
Marcel
The Netherlands

Kali Hronia!

I think many readers of your blog want the above said titles from you,anyway wish you happy new year in advance.