PHP Overview and Web Development Frameworks
PHP is a scripting language that runs on the server side and is primarily used for developing web applications. PHP was developed by Rasmus Lerdorf in 1995 and is currently developed and maintained by the open source community.
PHP is widely used to generate dynamic web pages, manipulate databases, upload and download files, and other functions. Since PHP can be embedded in HTML, it can also be used to execute PHP scripts directly within web pages. It is also widely used as a framework for popular web applications such as WordPress, Joomla, Drupal, etc., because it can run on many operating systems and is easily integrated with many databases and web servers, It is recognized as the language of choice for web application development because it can run on many operating systems and is easy to integrate with many databases and web servers.
Because PHP is an open source language, it is widely used, there are plenty of learning materials and tutorials available, and its relatively simple syntax makes it easy for beginners to use. However, the learning cost may seem high for first-time programmers, as they need to learn the knowledge and techniques required for web application development, database operations, etc. In addition, in recent years, the image of “for beginners” has become increasingly popular.
Furthermore, in recent years, the image of “for beginners” has somewhat faded, and with the enhancement of environments such as object-oriented syntax, type declarations, standard libraries, and application frameworks, the ground has been sufficiently prepared for so-called large-scale development. In addition, support for PHP is being strengthened mainly on Microsoft Azure, a cloud environment, and PHP, which previously seemed to be a technology mainly for the Linux environment, can now be used under a multi-platform environment.
To further streamline web application development, PHP has software that provides tools and functions for web applications, called application frameworks. The following is a representative list of these frameworks.
- Laravel: Laravel is one of the most popular PHP application frameworks, with a simple syntax, versatile features, and based on the MVC architecture.
- Symfony: Symfony is one of the oldest and most feature-rich PHP web application frameworks, allowing for greater flexibility in development by combining components.
- CodeIgniter: CodeIgniter is lightweight and fast, based on the MVC architecture, and has a simple syntax, making it a good framework for developing small web applications.
- CakePHP: CakePHP is a framework designed based on the MVC architecture, with features such as automatic view and controller generation. It also allows for easy database manipulation, thus streamlining the development of web applications.
This section describes various implementations and applications of PHP, with a particular focus on Laravel.
Implementation using PHP and Laravel
In order to program, it is necessary to create a development environment for each language. This section describes how to set up specific development environments for Python, Clojure, C, Java, R, LISP, Prolog, Javascript, and PHP, as described in this blog. Each language has its own platform to facilitate development, which makes it possible to easily set up the environment, but this section focuses on the simplest case.
PHP (Hypertext Preprocessor) is a scripting language for web development that runs mainly on the server side and is used to create dynamic web pages and develop web applications, such as embedding HTML code, accessing databases, and processing forms. It is used to create dynamic web pages and develop web applications, such as embedding HTML code, accessing databases, and processing forms. Laravel is the most popular PHP framework in the field.
This section describes specific implementations using Laravel (integration with mediawiki, cahtbot, Elasticsearch).
Laravel is a PHP framework developed by Taylor Otwell. One of the features of Laravel is its low learning cost.
Laravel Sail is an official development environment provided by Laravel, and it is easy to build a Laravel development environment by using a tool called Docker.
In this article, we will describe how to install and configure Docker, and how to download and run Laravel Sail.
In the previous article, we have already set up the Laravel environment, and in this article, we will outline how to build an application using Laravel.
In this article, we will follow the flow of a Laravel application from startup to termination.
In a web application, a process is executed starting from an HTTP request and finally returns an HTTP response, and this flow is the same in a Laravel application. The structure is designed to return an HTTP response.
The flow from HTTP request to HTTP response return in a Laravel application is described based on sample code in the following order: (1) entry point, (2) HTTP kernel, (3) router, (4) middleware, and (5) controller.
The framework consists of a number of classes with various functions. The controllers and models to be developed are also classes, and the service containers manage instances of these classes.
One of the advantages of deploying an application development framework is that it already provides the functions commonly used in applications, such as database and file operations, session and cookie management, log output, etc., making it easy to use the necessary functions and allowing developers to focus on the business logic. This allows developers to focus on the business logic.
Usually, when using a class function, an instance of the target class is created and its methods are called.
In many cases, the MVC pattern is used in general web applications, but the MVC pattern is perceived and interpreted differently by different developers. This article describes this MCV pattern. At the same time, we will also discuss a pattern derived from MVC called ADR, which has been widely adopted in PHP applications in recent years, and discuss the differences between the two based on actual application examples.
File input/output functions are the most basic and indispensable functions when programming. Since file input/output functions are procedural instructions, each language has its own way of implementing them. Concrete implementations of file input/output in various languages are described below.
Among programming languages, the basic functionality is one element of the three functions of structured languages (1) sequential progression, (2) conditional branching, and (3) repetition, as described in the “History of Programming Languages” section. Here, we show implementations of repetition and branching in various languages.
Database technology refers to technology for efficiently managing, storing, retrieving, and processing data, and is intended to support data persistence and manipulation in information systems and applications, and to ensure data accuracy, consistency, availability, and security.
The following sections describe implementations in various languages for actually handling these databases.
This section describes examples of how servers described in “Server Technology” can be used in various programming languages. Server technology here refers to technology related to the design, construction, and operation of server systems that receive requests from clients over a network, execute requested processes, and return responses.
Server technologies are used in a variety of systems and services, such as web applications, API servers, database servers, and mail servers. Server technology implementation methods and best practices differ depending on the programming language and framework.
An open source PHP framework for cross-platform chatbot development, used as a PHP library. It is designed to simplify the task of developing bots for multiple messaging platforms, and can handle everything from “simple command bots” to “advanced conversational interfaces. There is also a BotManStudio for Laravel.
Composer is an application-level package management system that provides a standard format for managing software and necessary library dependencies for the PHP programming language.
It runs on the command line and installs the libraries and other software on which the application depends. It can also install PHP applications available in the main “Packagist” repository, which contains available packages, and provides the ability to specify autoloading information for libraries to facilitate the use of third-party code.
It is also an important part of the functionality of well-known open source PHP projects, including Laravel
(1) index.php first receives the request, configures the application to run, etc., and passes it to the router. (2) The application moves according to routes/web.php and flows from middleware->controller->view, and now the flow is reversed (3) index.php receives the response, and the response is looked at in detail in the output.
I’ve set up a Docker development environment for Laravel, and I’d like to share it with you. I’m trying to test Docker for production use, so this is as much as I could figure out.
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