Getting Started with PHP3:35 with Alena Holligan
After 20 years, PHP is one of the most widely used technologies on the internet today. The driving force behind PHP has always been to solve a problem and make things easier to do. There is no complicated installation, and you can embed PHP code directly into your HTML. PHP is a great choice for creating simple yet powerful web sites and applications.
[SOUND] Hi, I'm Alena developer, teacher and lifelong learner. 0:01 Let me be the first to welcome you to the PHP community. 0:08 PHP is one of the most widely used technologies on the Internet today. 0:12 I'm almost certain that you've heard of at least one of the many projects built on 0:16 PHP, such as WordPress Drupal, Wikipedia or Facebook. 0:21 A conservative estimate is that 25% of the web is built on PHP. 0:26 PHP started as a personal project for Rasmus Lerdorf for 0:31 the maintenance of his personal webpage. 0:35 At the beginning, PHP was an abbreviation for personal home page tools. 0:38 As in PHP tools. 0:42 In 1995 these PHP tools were released to the world and 0:44 other developers learned about it and started to use it. 0:49 Two programmers Andy Goodman and 0:52 Steve Zeroski really liked PHP but they found it inefficient and lacking features 0:54 they needed to power an e-commerce application that they were developing. 0:59 They began collaborating with Rasmus in the development of a new 1:03 independent programming language. 1:07 This entirely new language was simply called PHP and 1:09 now stands for PHP hypertext preprocessor. 1:13 As an open source project, PHP has a core team of around ten developers. 1:17 It also has other contributors that help with quality assurance, documentation, and 1:22 suggestions for bug fixes and improvements. 1:27 Besides the PHP core, there are also many frameworks and 1:30 packages that you can use to add functionality to your programs. 1:34 With so many people using PHP and 1:38 contributing to the community the language continues to flourish. 1:40 PHP turned 20 old in 2015 and also saw the release of PHP seven. 1:45 This major rewrite more than doubled the speed of the previous version. 1:51 the driving force behind PHP has always been to solve a problem, and 1:56 make things easier to do. 2:00 To that end there's no complicated installation 2:02 as most servers come pre-installed with PHP. 2:05 It's also easy to use PHP to create a website. 2:08 You can embed PHP code directly into your HTML 2:12 by using code blocks then immediately preview the results in your browser. 2:15 There's no need to compile your PHP code, as with some other languages. 2:20 So you can get up and running quickly. 2:25 PHP is a great choice for creating simple yet powerful websites and applications. 2:26 PHP is a server side language simply defined 2:32 a server side language is one where the code is processed on the web's server. 2:36 This server receives a request from a client, processes that script on 2:41 the server, and then returns the results as an HTML response to the client machine. 2:45 In other words, the server sends back plain HTML. 2:52 Just like the kind you would write by hand to create a webpage. 2:56 Your web browser is the client. 2:59 So if you view the source code of a PHP file in a web browser, you should not see 3:01 any PHP code only the HTML that the server outputs after processing the PHP program. 3:07 In this course, I'm going to walk you through the basics of the language 3:14 ranging from simple statements to conditionals. 3:17 We'll be creating a simple unit converter as well as a daily exercise program. 3:20 We'll then finish up by using those scripts on a webpage. 3:25 I hope you're ready to get started because I'm excited to introduce you to 3:28 the fascinating world of PHP. 3:32
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