...Arrays * Part 5 - E-mail With PHP * Part 6 - PHP With Forms * Part 7 - Final Notes Introduction Up until recently, scripting on the internet was something which very few people even attempted, let alone mastered. Recently though, more and more people have been building their own websites and scripting languages have become more important. Because of this, scripting languages are becomming easier to learn and PHP is one of the easiest and most powerful yet. What Is PHP? PHP stands for Hypertext Preprocessor and is a server-side language. This means that the script is run on your web server, not on the user's browser, so you do not need to worry about compatibility issues. PHP is relatively new (compared to languages such as Perl (CGI) and Java) but is quickly becomming one of the most popular scripting languages on the internet. Why PHP? You may be wondering why you should choose PHP over other languages such as Perl or even why you should learn a scripting language at all. I will deal with learning scripting languages first. Learning a scripting language, or even understanding one, can open up huge new possibilities for your website. Although you can download pre-made scripts from sites like Hotscripts, these will often contain advertising for the author or will not do exactly what you want. With an understanding of a scripting language you can easily edit these scripts to do what you want, or even create your own scripts. Using scripts on your website...
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...Chapter 1 The Problem and Its Background Introduction The world of information has changed dramatically. These widespread changes may be considered a precursor to a second industrial revolution from which an information society may emerge. In the field of education, academic institutions are continuously challenged by social events unfolding in its midst. Developments in the workplace, changes in students’ demographics, and economic trends force educational institutions to change. Despite the improvement of educational institutions, employers and students have needs that the current education system failed to meet. In order to survive these upheavals, educators must improve their teaching and learning using technology. Quality education calls for educator who can give quality teaching. Hence, quality teaching requires quality techniques. Techniques are the practices and refinement of presentations which an educator employs to make instructions more effective when using a specific method of teaching. Educators should select appropriate learning materials to associate learning into a larger whole. Cruz (2004) said that the nature of the computer subject calls for an intensive and comprehensive way of presenting the lessons through advanced technology. The future ramifications of adopting technology into instructional settings can be significant and far-reaching and can produce a substantial and a direct result of technological innovations. Educational technology...
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... SUBMITTED TO: SUBMITTED BY: PROF. PRABHAKAR SHILPI GUPTA COMPUTER ENGG.DEPTT. ID NO. 27882 CP-1 CONTENTS TOPIC PAGE NO. 1. INTRODUCTION 2 2. EVOLUTION OF ASP 3 3. SERVER-SIDE SCRIPTS –SYNTAX 4 4. FEATURES OF ASP 4 5. ADVANTAGES OF USING ASP 6 6. WHAT YOU NEED TO RUN ASP 6 7. ASP SCRIPTS 7 8. THE OBJECT MODEL 8 9. COOKIES...
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...will: o o o o o o Learn about client/server architecture Study server-side scripting Create ASP .NET applications Learn about object collections Study ASP .NET’s core objects Create a guest book CHAPTER Y our Web browser is a client in the client/server environment of the Web. Up to this point, this book has focused on client-side JavaScript development in Web browsers. For you to develop a full complement of Web development skills, you also need to understand the server side of the Web— in particular, how server-side scripting fits into Web development. In this chapter, you will study server-side scripting with ASP.NET. But before getting into server-side scripting, it’s helpful to set the stage by reviewing the fundamentals of client/server architecture. 507 508 Chapter 11 ASP.NET CLIENT/SERVER ARCHITECTURE There are many definitions of the term’s client and server. In traditional client/server architecture, the server is usually some sort of database from which a client requests information. A server fulfills a request for information by managing the request or serving the requested information to the client—hence the term, client/server. A system consisting of a client and a server is known as a two-tier system. One of the primary roles of the client, or front end, in a two-tier system is the presentation of an interface to the user.The user interface gathers information from the user, submits it to a server, or back end, then receives, formats,...
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...CHAPTER ONE GENERAL INTRODUCTION 1. INTRODUCTION Real estate can be described as Property consisting of land and the buildings on it, along with its natural resources such as crops, minerals or water, immovable property of this nature, buildings or housing in general. Estate management is the operation, control, and oversight of commercial, industrial or residential real estate, usually on behalf of an owner. Management indicates a need for the property to be cared for, monitored and accountability given for its usable life and condition. This is much similar to the role of management in any business. This involves the processes, systems and manpower required to manage the life cycle of all acquired property as defined above including acquisition, control, accountability, responsibility, maintenance, utilization, and disposition. One important role of a Property Manager is that of liaison between the Owner of record and the actual tenant/lessee, providing a buffer for those owners who desire to distance themselves from their tenant constituency Other roles of the Property Manager include gathering data on tenant payment habits as well as maintaining and keeping records about tenant contacts, lease terms, property features, security deposits and payment history. 1.2 STATEMENT OF THE PROBLEM Property Managers encounter a number of problems when performing their role of estate management. These are discussed in brief...
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...Term Paper Website Migration CIS University 09/07/15 Tony’s Chips has recently been sold to a new independent company. The new company has hired me to manage a project that will move the old Website from an externally hosted solution to an internal one. The company’s leadership is very concerned about redundancy for their site, insisting that a back-up site be available as a failover in case the main site goes down. Therefore, the site will be redesigned so that customers will be able to place orders through the website and have them delivered as before. The design of the new system will be able to provide more data storage, faster retrieval, better security features and recovery solutions in the event that the website has any problems. With the operational reliability of the existing system, this will make it easier to improve the new system. The first part of the project goal is to discuss what it will take to build the web architecture, then what will have to be done to move the existing Website with minimal downtime, and then provide a disaster recovery plan in the event that the website should crash or stop working. In order to build the architecture, migrate the existing website along with adding the ability for the customers to place orders online and providing for redundancy of the site the system development life cycle (SDLC) will be used. The SDLC consists of five phases that will be utilized in this project and the five phases are systems planning, systems analysis...
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...CSC581: Advanced Software Engineering Web Application Architectures Manar Alqarni Abstract As the difficulty of web application grows, the need to develop an architecture for the web application is become necessary in order to support and guide an organization for web system planning, maintenance, deployment, building and design. This research paper presents an abstract view for web application architecture and it will be focused on the comparison of existing applications architecture. Moreover, it discusses the advantages and disadvantages of these architectural designs. Key words Web application, Architecture, Framework, MVC, Ajax, SOFEA. 1. Introduction The history of web application has begun when Tim Berners-Lee and his colleagues in 1989 were working together on their project for a distributed hypertext system, they did not have a clue of how the World Wide Web would look alike tomorrow [1]. While many of documents and accessible resources on the web were growing, also the different category of programming languages and technologies for web page generation increased. Additionally, the different category of programming languages and technologies caused a growth in the variety of possibilities and applications on the web [3]. Nowadays, the World Wide Web or WWW is not only of an huge information system that consists of million documents and information, it can also host distributed applications that give a concurrent access to users...
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...The World Wide Web provides a new paradigm in computer networking for human communication, which had an impact on the delivery of information and continues to stand in rapid developments. The word Web Technology represents a discontinuity in the way applications are connected. Using the Web Technology as the basis for an application brings substantial advantages to the adopter. This report focuses on 2-tier architecture and mainly on the 3-tier architecture, which is the present web technology. This report will also review the client-side scripting and the server-side scripting. TABLE OF CONTENTS EXECUTIVE SUMMARY 2 1. Introduction 3 2. Need for technology 4 3. Terminology 5 4. 2-Tier Architecture 5 5. 3-Tier Architecture 7 6. Client Server Architecture 10 7. Conclusion 12 REFERENCES 13 1. INTRODUCTION Web sites have quickly evolved from simple, static pages to complex Web applications performing critical operations for many businesses. These applications involve dynamic data from multiple sources; ever changing and various features for e-commerce, personalization and many more. At the same time, customers and internal users have understandably come to expect and demand more and more sophistication in the Web-based applications they use every day. The result? Web application solution providers — and their client companies — face several new challenges. They must meet or exceed...
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...3) To create dynamic and static web pages scripting languages are used. Identify types of Scripting languages with examples. Which languages would you prefer for creating your Online store? Critically evaluate the functions and advantages of web applications. (200 Words) Scripting Languages: A high-level programming language that is interpreted by another program at runtime rather than compiled by the computer's processor as other programming languages (such as C and C++) are called scripting languages. These can be embedded within HTML, commonly are used to add functionality to a Web page, such as different menu styles, graphic displays or dynamic content. Type of Scripting Languages: There are two types of scripting languages, which are: I. Client Side Scripting II. Server...
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...PHP, and how to execute scripts on your server Pre-requisites Before you continue you should have a basic understanding of the following: • • HTML/XHTML JavaScript What is PHP? • • • • • • PHP stands for PHP: Hypertext Preprocessor PHP is a server-side scripting language, like ASP PHP scripts are executed on the server PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.) PHP is an open source software PHP is free to download and use What is a PHP File? • • • PHP files can contain text, HTML tags and scripts PHP files are returned to the browser as plain HTML PHP files have a file extension of ".php", ".php3", or ".phtml" What is MySQL? • • • • MySQL is a database server MySQL is ideal for both small and large applications MySQL supports standard SQL MySQL compiles on a number of platforms 1 • MySQL is free to download and use PHP + MySQL • PHP combined with MySQL are cross-platform (you can develop in Windows and serve on a Unix platform) Why PHP? • • • • PHP runs on different platforms (Windows, Linux, Unix, etc.) PHP is compatible with almost all servers used today (Apache, IIS, etc.) PHP is FREE to download from the official PHP resource: www.php.net PHP is easy to learn and runs efficiently on the server side Where to Start? To get access to a web server with PHP support, you can: • • Install Apache (or IIS) on your own server, install PHP, and MySQL Or find a web hosting...
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...Web Server Application Attacks Christopher Jones Theories of Security Management Dr. Alaba Oluyomi Most web attacks are executed by several different methods to interrupt the functions of web servers. Web applications incorporate several applications to make it work properly. The web administrator must monitor the databases, extended markup languages, and script interpreters to stay ahead of hackers. All website that are running on a web server are prone to compromise, even though they are coded. Attackers take advantage of vulnerabilities of the web server. Attacker takes advantage of vulnerabilities within the implementation of TCP/IP protocol suites. With the slow reactions to correct these deficiencies, attackers are shifting to the application layers and mainly the web. This is in part caused by most companies open their firewall systems to web traffic. Most of the attacks are broad, and comes in many versions that fall into similar categories. Companies are making their web servers more secure, so attacks are moving to the vulnerability of web application flaws. Below are types of attacks on a web server 1 Web application vulnerabilities can be categorized as follows; Web server vulnerabilities, Manipulation of URLs, Exploitation of weaknesses in session identifiers and authentication systems, HTML code Injection and Cross-Site Scripting, and SQL Injection. SQL injection is a technique often used to attack data driven applications. This is done...
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...Lab Due Date: 8/10/2014 Overview In this lab, you verified and performed a cross-site scripting (XSS) exploit and an SQL injection attack on the test bed Web application and Web server using the Damn Vulnerable Web Application (DVWA) found on the TargetUbuntu01 Linux VM server. You first identified the IP target host, identified known vulnerabilities and exploits, and then attacked the Web application and Web server using XSS and an SQL injection to exploit the Web application using a Web browser and some simple command strings. Lab Assessment Questions & Answers 1. Why is it critical to perform a penetration test on a Web application and a Web server prior to production 7 Perform a Website and Database Attack by Exploiting Identified Vulnerabilities implementation? Penetration testing highlights what a real-world hacker might see if he or she targeted the given organization. The Penetraton test will give a security view in operational context and potential flaws can be discovered so that managment can make decisions about whether to allocated security resources to fix any discover problems. 2. What is a cross-site scripting attack? Explain in your own words. Cross-site scripting enables attackers to inject client-side script into web pages. Cross-site attacks occur when an attacker uses a web applicaiton to send malicious code, denerally in the form of a browser side script, to a different end users. Glaws that all these attacks to succeed are quite widespread...
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...Due Date: Overview In this lab, you performed simple tests to verify a cross-site scripting (XSS) exploit and an SQL injection attack using the Damn Vulnerable Web Application (DVWA), a tool left intentionally vulnerable to aid security professionals in learning about Web security. You used a Web browser and some simple command strings to identify the IP target host and its known vulnerabilities, and then attacked the Web application and Web server using cross-site scripting (XSS) and SQL injection to exploit the sample Web application running on that server. Lab Assessment Questions & Answers 1. Why is it critical to perform a penetration test on a Web application and a Web server prior to production implementation? To make sure no one can penetrate your web application before you put it in a live situation. 2. What is a cross-site scripting attack? Explain in your own words. Cross-site scripting is a type of computer security vulnerability typically found in web applications that enables attacks to inject client side script into web pages viewed by others 3. What is a reflective cross-site scripting attack? A reflective attack a type of computer security vulnerability it involves the web application dynamically generating a response using non-sanitized data from the client scripts, like Java scripts or VB script, in the data sent to the server will send back a page with the script. 4. Which Web application attack is more likely...
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...learn the other. Some of the differences between the two are that Java applets can create stand-alone applications that work across platforms running as standalone programs. However, JavaScript cannot create these stand-alone applications and reside on an Internet browser. A programmer must compile Java code before the program can run. This requires an outside program just to compile the code. A compiler turns Java code into machine language code before a browser can interpret it. Any changes the programmer makes to the code will require him to recompile the program and this can be a real tedious act to commit over and over. A web designer can write JavaScript functions directly in a text editor, saving the file and upload it to the server for immediate execution or using an editor like Adobe Dreamweaver that allows for...
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...Homework Title / No. : ____________________________________________Course Code : _________ Course Instructor : ______________________ Course Tutor (if applicable) : ____________ Date of Allotment : _____________________ Date of submission : ___________________ Student’s Roll No._______________________ Section No. : _________________________ Declaration: I declare that this assignment is my individual work. I have not copied from any other student’s work or from any other source except where due acknowledgment is made explicitly in the text, nor has any part been written for me by another person. Student’s Signature : _____________ Evaluator’s comments: _____________________________________________________________________ Marks obtained : ___________ out of ______________________ ------------------------------------------------- Content of Homework should start from this page only: ------------------------------------------------- Q1: How the HTML documents are structured? Discuss according to the logical and physical elements. (5) Ans: An HTML 4 document begins with a DOCTYPE declaration that declares the version of HTML to which the document conforms. The HTML element follows and contains the HEAD and BODY. The HEAD contains information about the document, such as its title and keywords, while the BODY contains the actual content of the document, made up of block-level elements and inline elements. A basic HTML 4 document takes on the following...
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