laravel determines whether it is cli

Laravel is one of the popular frameworks in modern PHP development and is widely used in web application development and API development. In Laravel application development, we often need to determine whether the program is running in command line mode or web mode in order to cope with different application scenarios.

It is a very common operation to determine whether Laravel is running in command line mode. For example, we may need to perform scheduled tasks in the CLI, process large amounts of data, generate files, migrate databases, etc. In Web mode, you need to handle HTTP requests and responses, perform user authentication, utilize front-end frameworks, etc. Therefore, correctly determining the mode in which Laravel is running is crucial for us to achieve more effective and efficient applications.

In Laravel, we can determine the running mode of the application by checking the PHP constant PHP_SAPI. The value of this constant indicates the type of SAPI (Server Application Programming Interface) currently being used by the PHP program. In command line mode, the value of the PHP_SAPI constant is usually cli, and in a web application, it is apache2handler or fpm-fcgi wait.

The following is a sample code:

if (PHP_SAPI === 'cli') {
    // 在命令行模式下运行
    echo '当前正在运行命令行模式';
} else {
    // 在 Web 模式下运行
    echo '当前正在运行 Web 模式';
}

In the above code, we use the PHP_SAPI constant to determine in which mode Laravel is executing. If the value of PHP_SAPI is cli, it indicates that the current application is running in command line mode, otherwise it is running in web mode.

In addition to using the PHP_SAPI constant in the code, we can also use the App object provided by Laravel to determine the running mode of the current program. For example, if we want to configure it differently in the application, we can use the following code:

if (App::runningInConsole()) {
    // 在命令行模式下运行
    echo '当前正在运行命令行模式';
} else {
    // 在 Web 模式下运行
    echo '当前正在运行 Web 模式';
}

In the above code, we used the runningInConsole()# of the App object ## Method, this method will return a boolean value. If the current Laravel application is running in CLI mode, this method will return true, otherwise it will return false.

In addition to using the

runningInConsole() method, the App object also provides many different methods that allow us to easily obtain other properties and environment variables of the current program. For example, we can use the environment() method to get the environment variables of the current application to decide in which environment to run the application.

In general, determining whether Laravel is running in CLI mode can help us make better use of the functions and resources provided by the framework. Whether in web mode or CLI mode, Laravel provides many useful tools and techniques that can help us develop applications more quickly and efficiently.

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