YII2 使用composer来创建项目。而且多出来好多额外的东西。总感觉好像写的不太正式。
而且受用vendor来管理倒入,是不是性能会下降?
回复内容:
YII2 使用composer来创建项目。而且多出来好多额外的东西。总感觉好像写的不太正式。
而且受用vendor来管理倒入,是不是性能会下降?
不太了解Yii/Yii2, 你的问题其实应该是为何要用Composer吧? 我觉得简单的来说就一句话:
<code>对于开发者来说, 用composer太爽了. </code>
Composer首先是一个是用于PHP开发的依赖管理工具(@bigqiang 谢纠正), 在https://packagist.org/有各式各样的包, 能帮助你解决各种依赖问题。在进行开发的时候,拿来权威的轮子总比自己费心费力造的省时省力,还经受住了大众的检验。比如Laravel就使用了很多 Symfony的独立组件库。有Composer这样的工具,你就不必在去特意的下载某个库, 组织目录, 维护库的版本,还有考虑怎么将库融入你的项目中。
Composer的自动加载机制, 并不会使性能下降(或则说就算有, 也是微乎其微的)。因为每个包都会定义自己的加载机制, 比如classmap, psr-0, psr-4, Composer只是按这种机制进行类的自动加载, 而不是将他们全部或部分加载, 或者有一个冗长的加载列表(但是有时存放加载列表的数组确实不小, 但这对性能的影响真的不大)。
PS: 如果我们在版本控制工具下工作, 那么一般会排除/vendor, 这样做的好处是, 工程的文件只有你自己的代码, 不会变的很大(前阵子我写的东东, 仅仅使composer引入的库就达到了100M+)。然后我们只需要在另一个环境上 composer install 就可以得到指定的、更新的、更稳定的依赖库了。
是的。
习惯就好,我感觉Yii2.0不错
我也有深刻的同感,yii2给我的感觉,在使用一种十分落后的方式进行一次彻底的重构。
比如 bootstrap,他为什么要非得 先在模板里面进行 $this->registerCssFile()
$this->registerJsFile()
,但问题是我的bootstrap 模板是这样的
<code>html</code><code> <!--[if lt IE 9]> <script src="http://cdn.bootcss.com/html5shiv/3.7.2/html5shiv.min.js"></script> <script src="http://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script> <![endif]--> </code>
他又如何在 $this->registerJsFile()
中实现呢?用另一种方式重构一个功能完善和强大程序而已,没有创新,开发出这样一套框架得花费大量的精力和心血,居然一个人完成的,不可思议
补充:
对比ci、thinkphp、yii2,认为yii2还是非常不错的,xueqiang一个人开发这样一套框架,把java的模式硬搬过来,有一点牵强附会,会让只写PHP的程序员感觉比较别扭。

PHP remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.

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The PHP community provides rich resources and support to help developers grow. 1) Resources include official documentation, tutorials, blogs and open source projects such as Laravel and Symfony. 2) Support can be obtained through StackOverflow, Reddit and Slack channels. 3) Development trends can be learned by following RFC. 4) Integration into the community can be achieved through active participation, contribution to code and learning sharing.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP is not dying, but constantly adapting and evolving. 1) PHP has undergone multiple version iterations since 1994 to adapt to new technology trends. 2) It is currently widely used in e-commerce, content management systems and other fields. 3) PHP8 introduces JIT compiler and other functions to improve performance and modernization. 4) Use OPcache and follow PSR-12 standards to optimize performance and code quality.

The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.


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