One thing that is quite prevalent in forums is sharing images as postings or as avatars. We saw that our RoboCoop was getting some hits, and wondered what was up. Well, there is a forum that has a daily discussion in Texas here that had put up a link to the image of our chicken […]
Having Fun With Forums and RedirectPermanent
Using XAMPP for Cross Platform GNU/Linux Mac OS X PHP/MySQL
We wrote about the XAMPP project in this article. This project is perfect for maintaining a cross platform dev environment for an application we are currently working on. Most of the work is done on OS X, but we also do some work on GNU/Linux. Further, the target audience for this may very well use […]
Using Tab2space to Convert Tabs to Spaces in Source Code
We often need to convert source code into html format. We use the pre tag; however, the default tab values are to wide. For instance: this is one tab this is another If we were to put some of our funner source code up, it would push the right margin over too far. Well, we […]
Match on Field Contents with PHP/MySQL
If you wish to search for a match within a field, rather than matching the entire field with a MySQL query, you can use LIKE. Here is an HTML page that will display an input box on a form: <html> <head> <title>Search</title> </head> <body bgcolor=”white”> <form method=”POST” action=”search.php”> <table> <col span=”1″ align=”right”> <tr> <td><font color=”blue”>Search […]
Installing and Configuring the Java SDK
Grab the sdk from java.com. For us, we are going to install this on Lobstora, which is a GNU/Linux box. Just make the binary executable and run it: [root@srv-1 opt]# chmod 700 j2*.bin [root@srv-1 opt]# ./j2sdk-1_4_2_03-linux-i586.bin We like putting this in /opt with a symlink to j2sdk. [root@srv-1 opt]# ln -s j2sdk1.4.2_03 j2sdk [root@srv-1 opt]# […]
Changing Images on Mouseover with JavaScript
I was digging around, trying to find out, what, exactly, was needed to change a graphic on mouseover. I knew that this was a JavaScript function, and figured I could find some easy docs on how to do this. Perhaps I’m slow, but most of the scripts out there were a bit too convoluted. True, […]
Installing Tomcat
Tomcat is part of the Apache Project. Tomcat, which is free and open-source, can serve up JavaServer Pages (JSP). For more info on this, see J2EE JavaServer Pages Technology. The JavaServer Pages FAQ is here. We were a bit lazy, and grabbed a binary from here. Make sure you have Java installed. We installed Java […]
Capturing Selected Text with JavaScript
Here is a way to capture text that is selected within a textarea box. As with this article, I have only included what is necessary for the script to function on a recent browser like IE or Mozilla/Firefox. For an example of how to do this outside a textarea box with even more stringent browser […]
Creating a JavaServer Pages Application
In this article we installed Tomcat so that we could serve JavaServer Pages (JSP). JSP is pretty easy to start off with, since you merely add the script parts to regular HTML, much like PHP. For instance, we could call this HTML hellow.jsp: <html> <body> Hello </body> </html> If we browse to our JSP server, […]
How to Redirect After HTML Output With PHP and JavaScript
You can’t use PHP to change the header information with the header function after HTML output has begun. If you do, you will get an error like: Warning: Cannot modify header information – headers already sent by … What you can do, midstream, though, is use a meta tag: echo “<meta http-equiv=’Refresh’ content=’0; URL=location.php?date=”.$date.”‘>”; This […]
Setting up Initial Tomcat Administration
There are a couple web-based administration tools that come with Tomcat, but you have to set up the admin and manager access first. This is done by adding a line to tomcat-users.xml: [root@srv-1 conf]# pwd /opt/tomcat/conf [root@srv-1 conf]# vi tomcat-users.xml Add the line with admin,manager in it: <?xml version=’1.0′ encoding=’utf-8′?> <tomcat-users> <role rolename=”tomcat”/> <role rolename=”role1″/> […]
Passing Variables Between PHP and JavaScript – Full App
Here is a single PHP/HTML script that will read a journal entry from a MySQL database, show the entry on the current web page, and add selected text from the displayed web page into the appropriate category choosen with buttons that have cool mouseover effects. The plum of this code is the use of the […]
Running Apache on Win32
Do you ever wish you could inch away from IIS and migrate towards Apache on Linux or some other UNIX operating system? Well, in this article we will install Apache on our NT server. Another advantage to using Apache is it is a cool way to get a full fledged web server on your workstation. […]
Compiling Java Telnet (jta25b)
There is an applet that can be used to serve up telnet sessions via a Java applet at Javatelnet.org. Note that this site is often down, although it is the current main site. There is an older version available here. Now, we have been trying to use this to provide a web interface for a […]
Upgrading Apache With Compiled-in Modules
See this article for information on compiling Apache with compiled-in modules. We find that this works well in some cases. The big problem, though, is you have to be very careful that you don’t break your website at upgrade time. There are some options to httpd that help with this. The -l option will list […]
Apache Installation and Configuration
First, get the current Apache distribution from Apache.org, and extract it: [root@srv-3 src]# ls apache_1.3.19.tar.gz bind-9.1.2 bind-9.1.2.tar.gz webmin-0.85.tar.gz [root@srv-3 src]# tar -xzf ap*.gz [root@srv-3 src]# [root@srv-3 src]# ls apache_1.3.19 bind-9.1.2 webmin-0.85.tar.gz apache_1.3.19.tar.gz bind-9.1.2.tar.gz [root@srv-3 src]# cd ap* [root@srv-3 apache_1.3.19]# ls ABOUT_APACHE config.layout INSTALL Makefile.tmpl src Announcement configure KEYS README WARNING-WIN.TXT cgi-bin htdocs LICENSE README.configure conf […]
Upgrading Tomcat
In our article on installing Tomcat, we used version 5.0.18. Well, it has been awhile, and we want to upgrade our system. First, we download the new binary from here. On our system, we put this all in opt. Let’s remove the old symbolic link and extract the tarball: [root@srv-1 opt]# rm tomcat rm: remove […]
Configuring Awstats With Static Pages
For years we have run our own homebrew web stats application out of frustration with currently available tools. Well, web stats packages have certainly improved over the years, and we decided to implement AWStats on one of our servers. We are doing this on a Red Hat Enterprise 4 box with Apache 2, so some […]
Installing A Certificate on Internet Explorer
In Internet Options, select Content: Click on Certificates: Click Import: Next to proceed. Find your certificate. In this case it is a WebID file: Enter a password for the key if there is one (don’t worry, you only have to enter this when you import the key the first time): Choose a personal store: Choose […]
Setting Background and Font Properties with CSS
If you wish to simply set a default background color and font style for your web pages, create a css file like this: body { background-color: #000000; font-size: 14pt; color: #00FF00; font-family: monospace ; } td { background-color: #000000; font-size: 14pt; color: #00FF00; font-family: monospace ; } pre { background-color: #000000; font-size: 10pt; color: #00FF00; […]
