Php Programming Assignment Help
The Php programming language is a server-side Html embedded scripting language. Let‘s depict the sentence. The Php language runs on the server-side. This means that the execution (read starting) of the scripts are done on the server where the web-site is hosted. Html embedded means that you can use Php statements (read a piece of Php code) from within an Html code. Php files are returned to the browser as plain Html. Php is a programming and scripting language to create dynamic interactive websites. WordPress is written using Php as the scripting language. Just like WordPress, Php is also an Open Source.
Php is a server side programming language. When a user requests a web page that contains Php code, the code is processed by the Php module installed on that web server. The Php pre-processor then generates Html output to be displayed on the user’s browser screen. The last piece of the sentence – scripting language – is a little harder to explain, but we will give it a go. A scripting language is a form of programming language that is usually interpreted rather than compiled. In programming languages such C or C++ you compile the program (permanently) into an executable file, before you can execute the program. A program that is written in a scripting language, is interpreted one command at a time by a command interpreter (Command interpreter is in most cases an executable written in another language (for instance C/C++) than the scripting language.) Some other examples of scripting languages are Perl, Phyton, Java and Ruby.
Php is a server-side scripting language designed primarily for web development but also used as a general-purpose programming language. Originally created by Rasmus Lerdorf in 1994, the Php reference implementation is now produced by The Php Development Team. Php originally stood for Personal Home Page, but it now stands for the recursive acronym Php: Hypertext Preprocessor. Php code may be embedded into Html code, or it can be used in combination with various web template systems, web content management systems and web frameworks. Php code is usually processed by a Php interpreter implemented as a module in the web server or as a Common Gateway Interface (CGI) executable. The web server combines the results of the interpreted and executed Php code, which may be any type of data, including images, with the generated web page. Php code may also be executed with a command-line interface (CLI) and can be used to implement standalone graphical applications.
There are three main areas where Php scripts are used.
Server-side scripting. This is the most traditional and main target field for Php. You need three things to make this work: the Php parser (CGI or server module), a web server and a web browser. You need to run the web server, with a connected Php installation. You can access the Php program output with a web browser, viewing the Php page through the server. All these can run on your home machine if you are just experimenting with Php programming. See the installation instructions section for more information. Command line scripting. You can make a Php script to run it without any server or browser. You only need the Php parser to use it this way. This type of usage is ideal for scripts regularly executed using cron (on *nix or Linux) or Task Scheduler (on Windows). These scripts can also be used for simple text processing tasks. See the section about Command line usage of Php for more information.
Php is known as a server-sided language. That's because the Php doesn't get executed on your computer, but on the computer you requested the page from. The results are then handed over to you, and displayed in your browser. Other scripting languages you may have heard of are ASP, Python and Perl. (You don't need to know any of these to make a start on Php. In fact, these tutorials assume that you have no programming experience at all. The most popular explanation of just what Php stands for is "Hypertext Pre-processor". But that would make it HPP, surely? An alternative explanation is that the initials come from the earliest version of the program, which was called Personal Home Page Tools. At least you get the letters "Php" in the right order!
But Php is so popular that if you're looking for a career in the web design/web scripting industry then you just have to know it! In these tutorials, we'll get you up and running. And, hopefully, it will be a lot easier than you think. Php is one of the most popular server-side scripting languages in existence today. The language has the ability to communicate back and forth with a server and create a dynamic web page for the user. If you have a web hosting account to run your personal blog or website, I can guarantee that Php is already installed. Even the page you are looking at right now was created by Php. If you have ambitions of becoming a web developer, Php is a must for you and will allow you to create dynamic web pages based on external input, usually from the user. It is also important to note that Php is an object-oriented programming language, and O.O.P. is one of the things we will cover in the series.
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