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YII is an open source web application development frame work written in php5 that comes absolutely free. It is the best possible choice for any kind of projects as it is optimized for a high level of performance. It gives legit performance as compared to the other PHP-based frameworks. It is the fastest PHP frame work that is optimized for creating large scale Web2.0 applications. It is versatile and can be used in developing any kind of web applications. As far as heavy traffic web applications are concerned, YII is the top choice. Such web applications include portals, forum, social media sites etc.

Thus, it has drawn millions of eyeballs in the recent times. More and more people are resorting to YII at a proliferating rate.

Why to choose YII?

YII has the most thriving features. The list includes MVC, DAO/Active record, caching, authentication and role-based access control, scaffolding, testing etc. It is light in weight and imparts a robust caching support. It involves a strong security base. This is inclusive of input validation, output filtering, SQL injection and Cross-site scripting prevention.
In case of other frameworks, functionality is enabled whether used or not. This terribly affects their performance. YII does not enable a specific functionality unless called for. Thus, YII uses lazy loading technique that makes it relatively faster.

Here are the top benefits of using PHP YII framework:

• Security

  YII has certain necessary security measures enabled such as Cross-site Scripting Prevention, Cross-site Request Forgery Prevention and Cookie Attack Prevention. In case of YII, writing of separate validation rules is not needed for the inputs unlike other frameworks. This is because YII includes client side as well as server side validation. You just need to enable or disable the validation rule. Also, YII has built-in authentication support. It promotes authorization as well via hierarchical role-based access control.

• Performance

  YII has the best possible performance among all the frame works. The performance is based on “request per second” (RPS). RPS is the measurement of the number of requests an application written in a framework can process every second. The higher the RPS the higher is the performance level of the framework. When PHP extension APC is enabled, the performance is extremely high.

• Excellent Caching features

  It is one of the most beneficial aspects of using YII. It provides multiple cache components that enable the users to store cached data in various media. YII has the best caching system. YII supports memcache, APC, XCache and DB based page and segment caching.
  Today the web applications need to be optimized efficiently to render rich user experience in all the memory intensive devices and platforms. Yii efficiently makes it easier for web applications to get optimized.

• ActiveRecord

  YII offers ActiveRecord for relational and NoSQL databases. YII provides the query builders feature. This tool has excellent caching features that include letting users store cached data in different media. Thus, YII leads to an extremely solid yet reliable caching system, supporting XCache, memcache, ABC, and DB based page for further convenience.

• Compatibility with third-party code

  YII is built to work with third party codes. Codes from PEAR or Zend Framework can be easily used in the YII application.This feature efficiently helps in augmenting the potential of any web solution in a professional manner. With the unbeatable combined power of both Zend and Yii or of both Laravel and YII!, the web application has a high probability of standing ahead in the race. This certainly contributes a lot to the PHP developer.

• Easy Customizability

  YII based applications are highly customizable. This golden feature is attributed by the fact that it has an extremely simple code structure. This allows developers to use different widgets and extensions as per their web project requirements. YII is highly object-centric. Thus, it is apt for object oriented web programming. Being architecturally clean, it is very simple to be extended. In case you happen to know object oriented programming, go for YII without blinking twice!

• Ajax helpers

  YII provides web developers with efficient Ajax helpers. These include Grid view, and CRUD generator, making use of the GII. The entire process of generating responsive applications is simplified by YII’s Bootstrap extension. The integrated support for I18N enables users to have localized versions of their applications.

• Large community support

  YII is supported and maintained by a superbly diligent team of professionals. The team believes in providing consistent support and contribution to YII’s growth and development over the years. The community keeps up-to-date with the dynamic advancement in the practices and integration of new features, thus incorporating the useful ones into the framework. Thus, YII is guaranteed to get more thriving and sophisticated, thus heightening its performance level for the web application framework.

• MVC Architecture

  The MVC architecture of YII highly assists the PHP web developers in developing smart web applications. Thanks to this feature, the database server remains isolated from the view state of the application, thus making it more prominent and effective. This very feature imparts a systematic approach towards the handling of application building processes.

• Why YII is way ahead in the race?

  As mentioned earlier, performance is the biggest attribute of YII. It is very efficient in handling a prominent number of requests per second. Its caching capacity is noteworthy and considered to be the highest among its counterparts. With a strong security, it presents a good number of highly accessible features that keeps your site safe from any form of cyber attack. YII can be easily extended and thus, customized through internal scripting. Being compatible with third-party code, it is highly versatile as well. Moreover, proper documentation is available to assist the newbies in the field of web development.

  Thus, without a doubt, YII Framework is a marvelous choice, especially when you are developing a website with a layered and structured design. This set of multiple features including extensibility, error handling, and security makes YII awesome for ecommerce sites.