Tonight, I was playing around with trying to figure out how to display some HTML entities inside a wordpress post.

I wanted to be able to display a simple fraction in a wordpress post.

After a bit of RTFMing on the WordPress Codex, I found that the tags will allow you to render HTML entities specificly.

The wordpress “code” tag will allow you to render specific HTML entities.

Be sure to use the decimal version of the entity rather than the entitized version!!!

Example.

4 ¼ x 5 ½

Definate a great series of articles to read if you are at all interested in creating solid database driven web applications.

ONLamp.com — MySQL Crash Course
MySQL Crash Course
by John Coggeshall
12/23/2003

Welcome to another issue of PHP Foundations. Last time, I wrapped up a discussion of an ongoing topic of security and good practices I’ve dubbed “PHP Paranoia.” Today I will be changing gears yet again and discuss a cornerstone of any sizable web application — a database back end. Specifically, I will be spending the next few columns discussing the MySQL database, starting with today’s article, which will serve as a crash course in SQL. For those of you who are familiar with relational databases such as MySQL, today’s column may not be necessary for you; it contains no PHP code. Instead, I will introduce the concepts of relational databases and the language used to manipulate the data within them. Those of who haven’t been exposed to relational databases, however, read on!

Congratuations are in order to Luis von Ahn, winner of the 2006 John D. and Katherine T. MacArthur foundation fellowship. Luis won this honor in his work concerning steganography.

The definition of steganography (from wikipedia):

Steganography is the art and science of writing hidden messages in such a way that no one apart from the intended recipient knows of the existence of the message; this is in contrast to cryptography, where the existence of the message itself is not disguised, but the content is obscured.

While this gentlemen might not be a household name to many of us, anyone who has participated on the modern internet has most definately seen the outcome of his work.

He and his colleagues created “CAPTCHA“, a method of validating that a human is interfacing with a webpage (among other things). (Completely Automated Public Turing test to tell Computers and Humans Apart) CAPTCHA presents an image with random text created in an image format. The code within CAPTCHA image is known to the server where the data is being sent to. If the message is the same as the one submitted, then the server trusts that the data was submitted by an entity that passes the turing test.

Again, congratutations to Luis von Ahn for his work.

Read the article here.