Yii中的资源是和Web页面相关的文件,可为CSS文件,JavaScript文件,图片或视频等,资源放在Web可访问的目录下,直接被Web服务器调用。
有时候有些功能需要做到计划任务中去,因此就需要yii能用php命令去执行。yii2.0是支持php命令行运行的,操作方法如下:
在yii根目录下面有个“yii”文件(不是“yii.bat”),这个文件就是入口。然后“commands”目录下会默认有个“HelloController.php”控制器文件,这个是一个demo。打开这个控制器文件,源码如下(删掉了部分注释):
<?php namespace app\commands; use yii\console\Controller; class HelloController extends Controller { /** * This command echoes what you have entered as the message. * @param string $message the message to be echoed. */ public function actionIndex($message = 'hello world') { echo $message . "\n"; } }
从上面可以看出,在命令行运行时,会继承console下的Controller;而一般“controllers”目录中的控制器会继承web下的Controller。
所以在php命令行中执行yii脚本的步骤为:
1.新建一个脚本
在“commands”目录下面按照“HelloController.php”的格式新建一个控制器脚本文件。
2.在命令行执行脚本
在命令行敲入“php yii项目所在路径/yii 控制器名/方法名”,例如“php E:/wwwroot/yii2/yii hello/index”,如下图所示。
需要注意的是:php一定要设置环境变量后才能这么用。想知道php是否已加入环境变量,请用“php -v”命令来查看。
Yii中的三种控制器类
base\Controller.php 这个是下面两个的基类
console\Controller.php 这个是控制台控制器
web\Controller.php 这个是web控制器
以上内容是小编通过实例讲解yii2.0在php命令行中运行的步骤,希望大家喜欢。

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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