Online Grading System - PHP Project

Online grading system greatly helps to those who currently developing an online online grading system

INTRODUCTION TO ONLINE EXAMINATION SYSTEM

This project titled ONLINE EXAMINATION SYSTEM is designed using HTML for Client Side and PHP for Server Side which helps in understanding different technologies. These exams covers almost all the concepts of technologies such as C, C++, C#, DOTNET, Java, SQL, Oracle such that it would be helpful for the users.

This project also makes the users to check what they have learnt by these solutions by displaying it on the solutions blog such that user can come to know their mistakes without any hard work by just knowing various technologies. The source code is very simple to understand. The person with basic knowledge in HTML as well as PHP can understand the coding easily and can make necessary changes as per the requirements.

works for small tables, but once the tables grow larger than 300,000 records or so this will be very slow because MySQL will have to process ALL the entries from the table, order them randomly and then return the first row of the ordered result, and this sorting takes long time. Instead you can do it like this

PHP, or PHP: Hypertext Preprocessor, is a widely used, general-purpose scripting language that was originally designed for web development, to produce dynamic web pages. PHP is the widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. All types of open source PHP code and applications are available on Open Source Scripts.

PHP: Hypertext Preprocessor is a widely used, general-purpose scripting language that was originally designed for web development to produce dynamic web pages. For this purpose, PHP code is embedded into the HTML source document and interpreted by a web server with a PHP processor module, which generates the web page document. As a general-purpose programming language, PHP code is processed by an interpreter application in command-line mode performing desired operating system operations and producing program output on its standard output channel. It may also function as a graphical application. PHP is available as a processor for most modern web servers and as standalone interpreter on most operating systems and computing platforms.

The PHP Documentation Framework

The PHP documentation is written in XML using the DocBook DTD. If you would like to contribute to the PHP documentation project, you need to at least know the very basics of XML and DocBook.

The XML files are stored on a central server, and can be reached with a SVN client. There are many SVN clients you can use, although we recommend one command line tool or a proven WYSIWYG tool.

You will need more programs and tools to manipulate the XML files and test their content for errors. The tools you need depend on the operating system you use. Linux or some sort of Unix is recommended, although many things in phpdoc work on Windows. You will find more information about the tools you need in the tools section.

MySQL is a database.

The data in MySQL is stored in database objects called tables.

A table is a collection of related data entries and it consists of columns and rows.

Databases are useful when storing data into server. A company may have a database with the following tables: "Employees", "Products", "Customers" and "Orders".

Basic object-oriented programming functionality was added in PHP 3 and improved in PHP 4. Object handling was completely rewritten for PHP 5, expanding the feature set and enhancing performance. In previous versions of PHP, objects were handled like value types. The drawback of this method was that the whole object was copied when a variable was assigned or passed as a parameter to a method. In the new approach, objects are referenced by handle, and not by value. PHP 5 introduced private and protected member variables and methods, along with abstract classes and final classes as well as abstract methods and final methods. It also introduced a standard way of declaring constructors and destructors, similar to that of other object-oriented languages such as C++, and a standard exception handling model. Furthermore, PHP 5 added interfaces and allowed for multiple interfaces to be implemented. There are special interfaces that allow objects to interact with the runtime system. Objects implementing ArrayAccess can be used with array syntax and objects implementing Iterator or IteratorAggregate can be used with the foreach language construct. There is no virtual table feature in the engine, so static variables are bound with a name instead of a reference at compile time.

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