PHP, LAMP Stack & WordPress
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This document provides an introduction to PHP and the LAMP stack. It discusses how PHP and LAMP became widely popular for shared web hosting due to their low costs. While PHP is among the most disliked languages, it powers many popular applications and frameworks like WordPress, which runs on over 31% of websites. The document demonstrates installing LAMP, basic PHP code, and WordPress.
PHP, LAMP Stack & WordPress
- 1. PHP, LAMP* Stack & WordPress *LAMP = Linux, Apache, MySQL, PHP Aug 28, 2018
- 2. Agenda • Introduction to PHP & LAMP stack • How PHP & LAMP took the world (at least, shared hosting) by storm Why PHP is widely used despite being among the “most disliked” languages! • PHP applications & frameworks; Laravel • WordPress (and why it powers 31% of the Internet / websites) • Demo: installing LAMP, some simple PHP code, installing WordPress
- 3. PHP • PHP: Hypertext Preprocessor Open source loves recursive acronyms! Other examples: GNU, cURL, RPM, WINE Used to be: Personal Home Page Tools (1994-1997) • Developed by Rasmus Lerdorf in 1994 • PHP Versions Initally not meant to be a separate language: worked with CGI (Common Gateway Interface) scripts / binaries to generate dynamic web pages PHP 3 & 4 (1997): re-write of initial PHP. Powered by new Zend Engine. PHP 5 (2004): support for OOP & classes, PDO (Data Objects), Windows support! Namespaces (backported from PHP 6 which was never released) PHP 7 (2014): mainly performance enhancements, reportedly up to 2x Multiple legacy features removed (PHP 4 constructor style, <? ?> delimiters)
- 4. Perl / Python • P in LAMP stack could also refer to Perl or Python • Won’t be discussing those today • Very different from PHP! • Examples of directory iteration in Perl (top) & Python (bottom) • Today Perl used to be go-to script for DevOps and sysadmins; now less popular Python has become Swiss army knife: used in production systems, DevOps scripts, automation, production systems & even web frameworks
- 5. PHP Basics • Early PHP (3 and 4) was similar to C – actually used C function names • PHP 5+ introduced OOP and namespaces • Embedded in HTML documents using <?php and ?>. File saved as .php, parsed server-side (web server with PHP module) and sent as HTML. Similar to ASP.Net, JSP, etc • Drop / copy your PHP files into a web server, and they just run. No compilation, build, etc. Deployment = test locally, commit to git, SSH into server, “git pull”
- 6. Google Trends: PHP, Python, Perl
- 7. Most Disliked Languages 2017 Stackoverflow Survey https://stackoverflow.blog/2017/10/31/disliked-programming-languages/
- 8. LAMP Stack • LAMP = Linux, Apache, MySQL, PHP (or Perl or Python) Linux = OS Apache = Web Server MySQL = Database PHP = Language • WAMP = Windows, Apache, MySQL, PHP MAMP = Mac OS, Apache, … • MEAN = MongoDB, Express.js, AngularJS, Node.js • WISA (!) = Windows, IIS, SQL Server, ASP.Net Source: https://www.freelancinggig.com/blog/2017/08/04/lamp-stack-vs-wisa-stack-best-startup/
- 9. Shared Hosting & PHP’s Popularity • Made popular by GoDaddy • Bunch of contenders: DreamHost, HostGator, 1and1, Bluehost, SiteGround • Web presence at low prices; multiple domains on 1 server $5-$10 a year for a domain $3-$10 a month for hosting = $36 - $60 a year • Small businesses flocked towards them to set up a .com web presence • Guess what software they were running on? LAMPSource: http://www.aiteducation.org/2016/07/shared-web-hosting-linux-or-windows/
- 10. PHP Applications: CMS, Commerce Source: https://www.rishabhsoft.com/php-application-development
- 11. PHP Frameworks • A few years ago, there were several contenders – CakePHP, Yii, Symfony, CodeIgniter • Today: Laravel leads the pack • All frameworks share similar patterns MVC framework ORM (Object Relational Mapping) Scaffolding (generate basic application from models)Source: https://www.quora.com/Which-is-the-best-framework-for-PHP
- 12. WordPress: Most Popular CMS • Most popular CMS (Content Management System) Replaced Joomla & Drupal (also PHP) • Initially started as blog system • Now also popular e-commerce platform (with WooCommerce) Replacing Magneto (also PHP) • Open-source, built on PHP. Primarily runs on LAMP stack • Initially released in 2003 by Matt Mullenweg when he was a student Now maintained by WordPress Foundation (non-profit) and Automattic (for-profit private company) Source: https://thenextweb.com/dd/2018/03/05/30-of-the-web-now-runs-on-wordpress/