Rui Miguel Feio

The Principles Of Successful Freelancing – Review

2nd July 2009 Rui Miguel Feio

When I first saw this book I must confess it got me curious. I read some reviews (which were good) and I decided to give it a shot and buy it. When I got the book (yes, because I buy most of my books online) I gave it a cursory […]

How to dynamically add or remove libraries from APF list

2nd July 2009 Rui Miguel Feio

Countless times I’ve been asked if I remember the command to dynamically change the APF list. Well, I’ve decided to include it here so that next time someone asks me I can tell them to come here. 🙂 Now, this can be done in many different ways but I normally […]

How to validate an email address format

2nd July 2009 Rui Miguel Feio

There are several ways of validating an email address format. Normally, I do it the following way: 1. I first define the regular expression for the email format: define (“FORMAT”,”^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$”); 2. To validate the email address provided is correct: if ( !eregi (FORMAT, $email)) echo “The email provided has an […]

PHP security considerations

1st July 2009 Rui Miguel Feio

When developing a script wether if it’s in PHP or any other language you should always consider the security aspect. I’m sure the last thing you want is to get your script (and ultimately your data) hacked. To make sure this does not happen there are a few steps you […]

How to identify a MySQL query problem

1st July 2009 Rui Miguel Feio

Sometimes you happen to have a problem with one of your MySQL queries and you simply can’t seem to understand why. Well, one thing that helps is to use the mysql_error() function. This function returns the message of the MySQL error you’re getting. Example: $action = “INSERT INTO table (name, […]