this is a test
7. March 2010
atime, mtime, and ctime
On traditional Unix-style file systems three timestamps are associated with each file. These timestamps are atime, ctime, and mtime. Most people understand atime as “access time.” A file is accessed when its content is viewed or is executed. ctime and mtime generate confusion since “change time” and “modification time” seem synonymous. However, what you need [...]
12. January 2010
Debugging MySQL issues in PHP
Possibly the most common issue users have with PHP is working with MySQL. Executing a query requires a three step process:
Connecting to your database server.
Selecting a database.
Executing the query.
When a query fails, many users don’t know where to begin debugging. This guide outlines my debugging procedure.
Verifying Database Connectivity
1. A database connection is generally established using [...]
9. January 2010
isset vs. empty
Many people tend to view these two functions as opposites, causing necessary debugging. This issue frequently occurs when validating forms.
isset()
From the PHP manual:
isset — Determine if a variable is set and is not NULL
In other words, a variable is set if it has been assigned a value other than NULL. If a variable is assigned [...]
4. January 2010
Basic OCR
This is a very basic optical character recognition script written in PHP. This is untested and serves merely a proof of concept. As noted in the comments, adjusting the sample size can improve results, since with a large sample size on a small image there can be many collisions. A database is needed to compare [...]
4. January 2010
Basic CAPTCHA
Very basic code demonstrating the use of the GD library by creating a simple CAPTCHA.
4. January 2010
Getting to know GD
Create dynamic userbars with GD
Introduction:
Have you ever been on aim and received a message from one of your friends with a big long URL followed by something like “John%20Is%20Stupid.” You know what ever it is, wont be worth your time, but you click on it anyway to find someone goofy looking holding a sign and [...]
30. November 2009
LOL Monday – Videos
I found this video hilarious. For those of you who are “slow,” it is how comment systems work on blogs.
See more funny videos and funny pictures at CollegeHumor.
I found this one just as funny, but for a different reason…
I’m just trying to figure out how a GUI interface can track an ip address – let [...]
29. November 2009
SEF URLs with out mod_rewrite
If you have done any web development, passing requests becomes an integral part of your code. Whether it is a session id, data to validate, or a view file to load you will most definitely end up passing one request or another. While working on my framework (which uses the model-view-controller design pattern), I decided [...]
9. March 2010
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