Many features that you see on the web require that the GD library be enabled on your PHP server. You may need the GD library if you are attempting to display CAPTCHA graphics somewhere on your site. In a default PHP installation, the GD library should already be enabled. The following How To explains how to determine if the GD library is enabled on your PHP server, and how you might be able to turn this on. What Do You Need to Start?
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Web application technologies like PHP, CGI, Javascript, and Ajax have made it much easier for people to construct and deploy services on the Internet. Unfortunately, this has opened a wide avenue for new attacks since it is as easy to unintentionally introduce new vulnerabilities into web applications as it is to intentionally introduce new functionality. Consequently, web applications have increasingly been the focus of attackers.
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There are hundreds of open source projects ranging from simple email software to publicly dedicated WWW servers and full operating systems. This article describes an online platform for educators with free open source educational systems including wikis, blogs, bulletin boards, Content/Course Management Systems, and MOOs, all open systems which are easily installed and managed. By setting up a content-based server, educators can save and archive their files online easily, and integrate their online resources without needing web design skill. With full control of these different educational tools, educators can form a collaborative learning community based on their teaching goals. Thus teachers and students can build an online community as partners. They can learn from and with others, share and try out web learning tools, distribute leadership and inspiration, and support and interact with others from all over the world.
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There has always been the necessity to have a definitive guide on PHP-Nuke. Due to time constraints, nobody has ever had the will to carry out this operation. Not any more! With this book, PHP-Nuke now posesses the most comprehensive guide on the subject, suitable for newbies and advanced users alike.

PHP-Nuke utilizes as hinge of its own structure the duo PHP+ MySQL, very often being accompanied by the Apache web server. Many modules have integrated many other languages, such as Javascript, Java, Flash and also even systems that serve, through the portal, sounds and films in streaming mode (Online Radio, TV Online, Images, Files…). From version 6.x onwards, the compatibility has been extended to include other databases as well, in order to extend the user base even more vastly.
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PHP?Nuke is free software, released under the GNU License. It is a CMS (Content Managment System) that integrates in its inside all the instruments that are used to create a site/portal of information (meant in broad sense). Given the immense number of present functions in the installation and in an even greater quantity of modules developed from third parties, the system is also adept to the management of
• Intranet business,
• e?commerce systems,
• corporate portals ,
• public agencies,
• news agencies,
• online companies,
• information sites,
• e?learning systems
• and so on…
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In this paper we describe a Python- and Tkinter-based visual-programming environment called ViPEr. This tool enables non-programmers to build computational and visualization networks interactively. Computational nodes can be placed onto a canvas and their input and output ports can be connected using the mouse. The connections between the nodes define a directed graph that will be used to propagate data and trigger the execution of nodes that have new input data. ViPEr is, in appearance, similar to programs such as AVS [Upson et al. 89] from Advanced Visual Simulations Inc, or OpenDX [DX 93] from IBM, but presents some fundamental differences which will be pointed out throughout this paper. Several examples of applications will be used to illustrate ViPEr’s design and current range of capabilities.
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Web Services Description Language (WDSL), originally developed by IBM, Microsoft, and others, is an XML format for technical description of Web services. In this tutorial, Mike Olson and Uche Ogbuji introduce WSDL4Py, an open-source Python library for WSDL 1.1 hosted by IBM developerWork’s open-source zone. Usage of the library is explained, as well as discussion of its development.
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ChucK re-factors the idea of a computer music language into three orthogonal basis components: unit generator connections that are data-flow only, globally consistent ”first-class” time control, and sample-synchronous concurrency. The syntax, semantic, and usage have been discussed in previous works. The focus and contributions of this paper are (1) to examine the philosophies and decisions in the language design (2) to describe ChucK’s implementation and runtime model, and (3) to outline potential applications enabled by this framework. We present an experiment in designing a computer music language ”from scratch” and show how things work. We hope these ideas may provides an interesting reference for future computer music systems.
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