Talk about PHP Components, Frameworks, Composer

Talk about PHP Components, Frameworks, Composer

Talk about PHP Components, Frameworks, Composer

1. 1.What is a component

A component is a set of packaged code. It is a series of related classes, interfaces, and Trait that help us solve a specific problem in a PHP application. For example, your PHP application needs to send and receive HTTP requests. You can use off-the-shelf components such as guzzle/guzzle. We don't use components to re-implement what we have already achieved, but to spend more time on the long-term goals of the project.

Excellent PHP components have the following characteristics:

  • Single role: focus on solving a problem, and use a simple interface to encapsulate functions
  • Small: Small and compact, containing only the minimum code needed to solve a problem
  • Cooperation: PHP components can work well together to achieve large projects
  • Good testing: Provides testing itself, and has sufficient test coverage
  • Document perfection: There should be complete documentation to make it easy for developers to install, understand and use
2. Component vs framework

When we choose a framework, we have to invest a lot in the tools of this framework. The framework usually provides a lot of tools, but when we do n’t provide one of the tools we need, the pain is passed on to us. We have to find and integrate custom PHP library. Integrating third-party code into the framework is difficult because third-party code and frameworks may not use the same interface.
When choosing a framework, we look at the future of the framework, but who can guarantee that a framework is always the best tool to accomplish a certain job? Large projects that have existed for many years must have good performance, and they must always be adjusted. If you choose the wrong PHP framework, you may not be able to do this. Older PHP frameworks may be slow or outdated due to lack of community support. These old frameworks are usually written using procedural code instead of new-style object-oriented code and some new features of PHP. In short, when deciding whether to use the PHP framework, There are many things to consider.

Fortunately, Laravel has performed well in these concerns, so it can stand out among many PHP frameworks. In a sense, Laravel is also a component-based development framework (the core component is its own Illuminate library, and a large number of functional implementations Depends on third-party components), compared to Symfony, it is easier to get started, so it has both scalability and ease of use. However, Laravel also has some shortcomings. For example, Laravel's own components cannot be easily decoupled and used outside the Laravel framework (but I believe this situation will improve, such as its database and queue components can be decoupled). Overall, Laravel is still an excellent framework that can help us quickly create powerful applications.

Should we use components or frameworks? The answer is to use the right tools to do the right thing. If you can quickly implement small projects through some PHP components, then use components. If you have multiple team members developing large projects, you can benefit from the conventions and structure provided by the framework. Then, use a framework (if you are struggling with what framework to use, then choose Laravel, it will not let you down), use a framework to guide and accelerate the development of the project.

3. Using components

Packagist

We look for PHP components in Packagist. This site is used to collect PHP components. The best PHP components can be found in Packagist.

For example, we want to use an http component to send and receive HTTP messages, and search for http in the search box. The first result we get is Guzzle. Use it.

Composer

Packagist is a community for finding PHP components, Composer is a tool for installing PHP components. Composer is a PHP dependency manager. It runs on the command line. You tell Composer which components it needs. Composer will download and automatically load these components into your project. It's that simple.

Composer and Packagist close cooperation, if you want to use to tell Composer guzzlehttp/guzzle components, Composer will get from Packagist the guzzlehttp/guzzle assembly, warehouse find address this component to determine which version to use, but also to find out the dependence of this component, then the guzzlehttp/guzzle component and its Dependencies are downloaded into your project.

In addition, Composer will automatically generate PSR-compliant autoloaders for all PHP components in the project, effectively abstracting dependency management and autoloading. Therefore, for the PHP community, Composer is the most important additional tool. It is not too much to think about the painful days when we had to manually implement autoloading using include, require, and spl_autoload_register.

Regarding the installation and use of Composer, I won't go into details here.

4. Sample project

Below we use an example project to demonstrate how to use Composer and components to develop a PHP application. The purpose of this application is to scan the URL in a CSV file to find the dead link. The application will make an HTTP request to each URL. If it returns The HTTP status code is greater than or equal to 400, and this dead link is sent to standard output. This is a command line application. After development, we will execute this script, pass in the path of the csv file, and display the dead chain list in the standard output.

Install components

Before you start, let's see what tasks can be solved using existing PHP components: we need a component that can iteratively process the data of the csv file, and also send an HTTP request to each URL in the csv file, so we also need one that can send A component that makes HTTP requests and checks HTTP responses.

After browsing Packagist, we find guzzlehttp/guzzle, and league/csv he two components, the former for processing HTTP messages, which is used for processing CSV data. Below we run the following command at the top level of the project:

composer require guzzlehttp/guzzle
composer require league/csv

Composer will install dependencies to the root directory. vendor After the installation is complete, it will generate composer.json and composer.lock files in the root directory :

composer.lock The file will list all PHP components used by the project, as well as the specific version number of the component. This actually locks the project so that the project can only use a specific version of PHP components. The advantage of this is that composer will download the specific version listed in this file, regardless of the latest version available in Packagist. You should put the composer.lock file into version control so that the team members use the same PHP version as you. Development and server use the same version of PHP components, you can minimize bugs caused by different component versions.
If you really want to download the latest version of the component and update it composer.lock, you can use the composer update command.

Autoload

Next we write the application code, create a scan.php file in the root directory , and then use require the autoloader created by importing Composer at the top of the file :

The autoloader created by Composer is actually a file named autoload.php, which is stored in the vendor directory. When Composer downloads each PHP component, it checks the composer.json file of each component to determine how to load the component and get this information Later, Composer will create a PSR-compliant autoloader for the component locally. This way we can instantiate any PHP components in the project, which are automatically loaded on demand.
Write code
Below we formally write scan.php code using Guzzle and CSV components:
//Guzzle Http Client
$client = new GuzzleHttp\Client();
//Open and iteratively process CSV
$csv = League\Csv\Reader::createFromPath($argv[1]);
foreach ($csv as $csvRow) {
try {
//Send HTTP GET request
$httpResponse = $client->get($csvRow[0]);
    //Check the status code of the HTTP response
    if($httpResponse->getStatusCode() >= 400) {
        throw new Exception();
    }
} catch (Exception $e) {
        //Send dead chain to standard output
        echo $csvRow[0] . PHP_EOL;
}

}
Below we add some URLs in urls.csv, one per line, and at least one is a dead link:
Then open a terminal and execute the scan.php script:
php scan.php urls.csv
We passed two parameters, the first is the path to the script file scan.php and the other is the path to the CSV file. The output is as follows:
In the next section we will explore private PHP components and how to create your own PHP components and upload them to Packagist.

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PHP Interview Questions with Solutions: Prepare for PHP Interview

PHP Interview Questions with Solutions: Prepare for PHP Interview

Prepare for PHP Interviews. Set Variable With php.ini File. Logic & Output Behind PHP Code Segment. Class Concept, Error & Functions in PHP. Start PHP Now!

Description
In this course you will be introduced with some tricky questions that everyone face during their interview. In each solutions I have included some useful functions which we generally use at the time of development also. I have covered the following area in my course with Questions, Attractive Presentations and Practical Solutions that will help you to understand the logic behind PHP in a different way.

Some useful functions
PHP error types
Class concept
Access specifiers public, private and protected
Set variable with php.ini file
Operators introduced in PHP7
Logic and its output behind some code segment
Basic knowledge
PHP7, XAMPP Server, Notepad++
What will you learn
This course is build for the person who is facing interviews. Every question is well explained with the practical solution through videos. So that everybody can prepare themselves for the tricky questions asked during interviews
To continue:

Advantages of Hiring PHP Developer for your Website Project

Advantages of Hiring PHP Developer for your Website Project

PHP - Hypertext pre-processor, a scripting language used by many people in developing web pages, but most of us are unaware even of the full form. To train someone and make them learn this whole language is as difficult and time-consuming as it is...

PHP - Hypertext pre-processor, a scripting language used by many people in developing web pages, but most of us are unaware even of the full form. To train someone and make them learn this whole language is as difficult and time-consuming as it is to learn the language yourself. That’s why PHP developers are there to make your life easy. This article will give us the advantages and requirements of Hire PHP Developer for our very own website project.

First of all, let us understand the value the right developer brings to the project and why it is important for your business.

A website is a major component of any company/business and is very important for its face value, the way it represents the company on the internet is critical for any business to succeed. This is the reason why companies are looking for PHP developers who can develop their webpage.

If you're planning to do an online business, your PHP programmer will be the first person to transfer your thinking onto the webpage. You should, therefore, employ developers from PHP to make your hypothetical idea a reality.

With this software programming language, PHP developers all-around can easily build website frameworks, web content management systems, web template systems, and various other web-based designs.

Some of the reasons why we need to outsource these developers are:

Not everyone is the best in each field, all of us have our specific skills and talents hence, PHP developers are also the best at what they do. The time and money spent on the training of the in house employees would be saved if the professional PHP developers are hired. Instead of multitasking, if the employees were to focus on what they’re good at it would increase productivity too.

The PHP developers would be much more professional than the in-house workers. It would lead to the seriousness of work. Hence, on-time delivery is guaranteed with hired PHP developers.

In addition to these benefits, you would also be able to track your project through every stage in constant communication with your online team. These advantages make it incredibly popular and smart to hire a PHP developer.

The PHP developers have in-depth knowledge of PHP, HTML and various frameworks in terms of technical capabilities. Hiring PHP developers are advised to give your website a professional look based on PHP.

Much of web success depends on the involvement of social media. The developer can add to your social networking pages a feature that explicitly redirects visitors. In addition, SEO experts also suggest better connections to the website's social network.

Just like a tailor stitches our dresses according to our preferences and is ready to make last-minute changes. A PHP developer will also be available at the nick of your call to make the website just the way you want it to be and have a customized solution for every problem.

Read also: Why & How to Hire Dedicated PHP Developer

At some point in your business, you’re going to have problems regarding your webpage due to the rapidly changing technology, instead of struggling with ideas like these and not being able to come up with an appropriate solution a PHP web developer could help us with our problems just like any technician would help us with the problems we face in our offices or any architect would help us with designing the structure of a building or any interior designer would help us with setting up our home. The PHP development company are hubs of workers who would help us overcome these problems and are always there.

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10 Popular PHP frameworks in 2020

10 Popular PHP frameworks in 2020

10 Popular PHP frameworks in 2020.PHP, or hypertext preprocessor, is an open-source server-side scripting language.But how do you know which PHP framework is right for you?

PHP, or hypertext preprocessor, is an open-source server-side scripting language. It’s extremely popular, too — almost 80% of all websites were using PHP

But how do you know which PHP framework is right for you?

Why use a PHP framework?

This post will list the 10 best PHP frameworks out there to help you choose.

A PHP framework provides a basic structure for streamlining the development of web apps. We use them because they speed up the development process.

Above all, the responsiveness of websites and applications built using PHP frameworks helps businesses fulfill their performance needs. So there’s no doubt that PHP frameworks will continue gaining attention and popularity in 2020.

The top 10 PHP frameworks

Here’s a list of the best PHP frameworks, based on popularity and ability to facilitate application development.

1. Laravel

Introduced in 2011, Laravel has become the most popular free, open-source PHP framework in the world. Why? Because it can handle complex web applications securely, at a considerably faster pace than other frameworks. Laravel simplifies the development process by easing common tasks such as routing, sessions, caching, and authentication.

Reasons to use Laravel

  • Laravel is suitable when developing applications with complex backend requirements, whether small or large. Installing Laravel has been made easier by the introduction of Homestead, a prepackaged, all-in-one vagrant box.
  • It’s a PHP framework full of features that will help you customize complex apps. Among these: seamless data migration, MVC architecture support, security, routing, view template engine, and authentication, among many others.
  • Laravel is highly expressive, and its speed and security are in line with expectations for a modern web application. For developers who want to build B2B or enterprise websites that will evolve with changing web trends, Laravel is the way to go.
2. CodeIgniter

Known for its small footprint (it’s only about 2 MB in size, including the documentation) CodeIgniter is a PHP framework suitable for developing dynamic websites. It offers numerous prebuilt modules that help with constructing robust and reusable components.

Reasons to use CodeIgniter

  • CodeIgniter is a lightweight and straightforward PHP framework that’s hassle-free to install, unlike other frameworks. Due to a simple setup process and highly illustrated documentation, it’s ideal for beginners.
  • Key features include an MVC architecture, top-notch error handling, inbuilt security tools, and simple and excellent documentation. In addition, it creates scalable apps.
  • Compared with other frameworks, CodeIgniter is considerably faster. Since it also offers solid performance, it’s a good choice when you want to develop lightweight applications to run on modest servers. One caveat: CodeIgniter releases are a bit irregular, so the framework isn’t a great option for an application that requires high-level security.
3. Symfony

The Symfony framework was launched in 2005, and although it’s been in existence for much longer than other frameworks on this list, it’s a reliable and mature platform. Symfony is an extensive PHP MVC framework and the only framework known to follow PHP and web standards to the tee.

Reasons to use Symfony

  • Symfony is the perfect choice for developing large-scale enterprise projects. It’s easy to install and configure on most platforms.
  • One of its key features? It’s reusable PHP components. It also boasts database engine–independence, and it’s stable, complies with most web best practices and design patterns, and allows for integration with other vendor libraries.
  • Symfony is also highly flexible and can integrate with bigger projects like Drupal. Symfony and Laravel have many common and unique features, which makes it difficult to say which of these frameworks is better.

However, while Laravel focuses more on simplicity and delivering value, even for developers who are not advanced, Symfony targets advanced developers and is a bit harder to start with. In addition, the Symfony security mechanism is a bit difficult to use. And, because it lets developers “do it all,” it can be slower than other frameworks.

4. CakePHP

If you’re looking for a toolkit that’s simple and elegant, look no further. CakePHP will help you develop visually impressive, feature-loaded websites. In addition, CakePHP is one of the easiest frameworks to learn, especially because of its CRUD (create, read, update, and delete) framework. CakePHP hit the market in the early 2000s, and since then it’s gained better performance and many new components.

Reasons to use CakePHP

  • CakePHP is simple and easy to install, as you only need a web server and a copy of the framework.
  • It makes a good choice for commercial applications due to security features that include SQL injection prevention, input validation, cross-site request forgery (CSRF) protection, and cross-site scripting (XSS) protection.
  • Some key features include a modern framework, fast builds, proper class inheritance, validation, and security. In addition, CakePHP provides great documentation, many support portals, and premium support through Cake Development Corporation.
5. Yii

The Yii framework — which stands for Yes, it is! — is, in fact, simple and evolutionary. It’s a high-performance, component-based PHP framework for developing modern web applications. Yii is suitable for all kinds of web apps. For this reason, it’s a universal web programming framework.

Reasons to use Yii

  • Yii has an easy installation process. Furthermore, its robust security features make the framework suitable for highly secure endeavors such as e-commerce projects, portals, CMS, forums, and many others.
  • It boasts excellent speed and performance, it’s highly extensible, and it lets developers avoid the complexity of writing repetitive SQL statements, as they can model the database data in terms of objects.
  • Yii has a core developer team and experts that contribute to its development. With a massive community using it, you can post issues on Yii forums and get help.
  • Yii is extremely extensible, and you can customize nearly every piece of the core’s code. However, if it’s your first time using it, be prepared for a steep learning curve.
6. Zend Framework

The Zend framework is a complete object-oriented framework, and the fact that it uses features such as interfaces and inheritance makes it extendable. It was built on the agile methodology, which helps you to deliver high-quality applications to enterprise clients. Zend is highly customizable and abides by PHP best practices — an important point for developers who want to add project-specific functionalities.

Reasons to use Zend

  • Zend framework is an excellent fit for complex, enterprise-level projects. It’s the preferred framework for large IT departments and banks.
  • Some key features include MVC components, simple cloud API, data encryption, and session management.
  • It can integrate with external libraries, and you can use only the components you want. The Zend framework comes with extremely good documentation and has a large community base. However, if you’re a mobile app builder, get ready for a steep learning curve.
7. Phalcon

A full-stack PHP framework that employs the MVC web architecture design pattern, Phalcon was originally written in C and C++ and released in 2012. Since it’s delivered as a C-extension, you don’t have to worry about learning the C programming language.

Reasons to use Phalcon

  • Phalcon is easy to install and suitable for creating highly configurable web applications that are in line with enterprise development guidelines.
  • Key features include increased execution speed, asset management, a universal autoloader, and top security and caching.
  • Unlike other frameworks, Phalcon optimizes performance due to its efficient memory utilization. If you’re looking to create a blazing fast website, give Phalcon a try.
  • On the negative side, Phalcon developers are a bit slow to patch bugs, which may not jive with today’s need for high levels of security.
8. Swoft

Swoft is a PHP high performance microservice coroutine framework. It has been published for many years and has become the best choice for php. It can be like Go, built-in coroutine web server and common coroutine client and is resident in memory, independent of traditional PHP-FPM. There are similar Go language operations, similar to the Spring Cloud framework flexible annotations.

Reasons to use Swoft

  • Based on Swoole native Coroutine, comes with a resident memory and a package of other Swoole features.
  • Comes with Mysql/Redis/Rpc efficient connection pool and all connection disconnection reconnection. Developers not do care about connection pooling, and the corresponding components have been implemented.
  • AOP can be used for all objects managed by the framework container. Using AOP allows you to control the behavior of instance objects without changing the inside of the instance.
  • The RPC service is divided into RPC Server and RPC Client, and the framework provides a more elegant way to use RPC services like Dubbo.
  • With service mesh frameworks such as Istio/Envoy, and provides a set of rapid build microservice governance components for small and medium-sized businesses, including service registration and discovery, service bucks, service throttling, and configuration centers.
9. PHPixie

Introduced in 2012 and just like FuelPHP, PHPixie implements the HMVC design pattern. Its goal was to create a high-performance framework for read-only websites.

Reasons to use PHPixie

  • It’s easy to get started with PHPixie, which is suitable for social networking websites, customized web applications, and web app development services.
  • Key features include HMVC architecture, standard ORM (object-relational mapping), input validation, authorization capabilities, authentication, and caching.
  • PHPixie is built using independent components. For this reason, you can use it without the framework itself. Note that PHPixie has relatively few modules. Besides that, it lacks support for components independently made from the dependencies. Since it’s relatively new, it’s less popular and has a smaller community of users than other frameworks.
10. Slim

Slim is another popular PHP micro-framework that helps developers quickly create simple but powerful web applications and APIs.

Reasons to use Slim

  • Just like PHPixie, Slim is easy to learn. PHP developers use Slim to develop RESTful APIs and web services. Key features include URL routing, session, and cookie encryption, client-side HTTP caching, and more.
  • It’s the best framework for a small web application that doesn’t necessarily require a full-stack PHP framework. In addition, active maintenance and friendly documentation make Slim super user-friendly.
Which PHP framework is right for you?

Using PHP frameworks simplifies the development process, which helps to minimize workload. Each framework has its own strengths and weaknesses, and they all vary in terms of community, documentation, and the database they support.

As such, the decision on the best framework to use depends on various factors such as security, ease of use, scalability, documentation, and more. So, start by understanding the requirements of the project or application you want to develop. Then, choose the most suitable PHP framework from this list. You can’t go wrong.