Symfony is a PHP framework which makes it easier to use the MVC (Model View Controller) mechanism. Is one of the best framework that exist today for creating web applications. It was created to be used in version 5 of PHP, since it makes extensive use of the orientation that focuses on this version. Symfony2 version requires PHP 5.3.3. Also used Synfony 3 for PHP version 7.
Web development with Synfony 2, 3 and 4
Symfony2 was created by the business Fabien Potencier, who today remains at the forefront of the project with a goal focused on improvements that facilitate the usefulness of software development by a Web programmer.
Although Synfony2 can be used for different types of non-web-focused work, this framework was created specifically to improve the development of web applications, offering tools to strengthen and speed up somewhat complex applications.
Symfony2 Freelance Developers
In itself, symfony2 is not intended to create something new as it refuses concepts and jobs already executed and inserts them into Sympony to be used by the user.
One of those concepts is the one that refers to the integration of one of the framework Best known ORMs within which they were made PHP development companies called “Doctrine”, which is in charge of communicating with the database, offering supreme control over them without taking into account that it is talking about MySQL, PostgreSQL, Oracle and other engines, since the vast majority of sentences SQL are not made by the programmer but by Doctrine
With the Doctrine framework, you can manage everything related to data models. Each file in the model is actually a class, and are commonly referred to as "entities." So, you just have to take care of creating the entities and Doctrine will generate all the necessary databases and tables, and everything is achieved by placing a simple command line command. To enter the data, a object called “Entity Manager” must be used from the controller.
Another example that may also serve is the inclusion of the frameworkTwig, which is a powerful template engine that does code separation PHP and the HTML achieving notable improvements thus creating a wide variety of options and a good order and execution of the project.
With the YAML language, which is the direct competition of XML, you can have a huge amount of configuration entirely separate from the code, improving clarity and response. If you don't want to work with YAML you can use the configuration files with XML or PHP.
With Symfony you have the instructions in the console which are named "Tasks" tasks that allow the execution of commands in the terminal, indicating to Symfony2 to do what is necessary and required, such as the complete generation of the vital programs to do ABMs, labor that is cumbersome for some programmers since this means that many codes must be applied for the execution of tasks in different tables.
Another very important benefit is that Symfony2 has a sub framework for working with forms. In this way, a class focused on objects of the HTML form is made and once they are done, they are only displayed and executed.
This indicates that the HTML form is not designed, but is programmed using mechanisms of the framework.
In this way you can have all the application forms together with the validations done on the server in one place. With Symfony2 you can implement quite practical and powerful validator objects to improve the security of the data placed by the users.
With Symfony2 there is also a large amount of support to protect the site, thus keeping us free from malicious attacks that exist today such as SQL Injection, XSS or CSRF.
These virtual attacks can now be avoided, making Symfony take care of all of them, and attention can be drawn to attacks that are due to misuse of business or bad business decisions.
With this, a website is achieved where everything is located where it has to be and the maintenance and correction of errors is easier and above all effective.
Symfony2 has a large number of libraries, tools and aids that allow you to make an application quickly than trying to do it in a traditional way.
Many of the conflicts that you may face were analyzed for their subsequent solution by other programmers, allowing you to focus on new unforeseen events that may arise.