A PHP framework is built on the open-source language PHP and offers built-in features to improve your software development lifecycle. These features increase development speed and improve performance within your team by lowering the workload of your developers.

PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.
PHP is a programming language used to script websites that are dynamic and interactive. You’ll find it in various types of web applications, from e-commerce websites to CRM systems like HubSpot and Salesforce.A PHP interpreter makes a website dynamic and customizable, allowing a site to respond to user input or information in some expected way. The interpreter is a key link between the user and web server, databases, and the relevant files or responses sent back to that user.

Laravel is a free, open-source PHP web framework, created by Taylor Otwell. It is a powerful Model-View-Controller (MVC) PHP framework, designed for developers who need a simple and elegant toolkit to create full-featured web applications.. Laravel’s first stable release took place in 2011 but didn’t get much attention. When Laravel 3 came out in 2012, it started to gain some hype thanks to its new features, such as Artisan CLI. Here are a few notable Laravel features that make it such a popular PHP framework among web developers.Laravel comes with a out-of-the-box solutions for authentication and authorization. With a couple of Artisan commands, you can set up reliable and robust authentication and authorization for your web app.

WordPress is open source software. This means it has a large community constantly contributing to its development and creating tools which provide additional functionality to its users.
The WordPress open source project has evolved in progressive ways over time—supported by skilled, enthusiastic developers, designers, scientists, bloggers, and more. WordPress provides the opportunity for anyone to create and share, from handcrafted personal anecdotes to world-changing movements.The main advantage of using the WordPress platform is that you don’t need any coding skills to put your content online.

CodeIgniter is a one of the most widely used open source web application development framework written in PHP. CodeIgniter is considered to be very light weight, simple and elegant framework written in PHP. CodeIgniter follows MVC design pattern, which offers great separation between logic and presentation
The CodeIgniter is majorly used to alter the Hierarchical Model View Controller (HMVC) and permits the developers to organize a modular level of grouping of controllers, views, and models. These are also arranged in a subdirectory format. This framework is popular for vibrant speed and rapid responsiveness in comparison to other PHP frameworks.