MCQ Flashcards

Which command should be used to choose the database?

Answer: $mysqli->select_db(‘databasename’);

When using the `mysqli` object-oriented interface in PHP, the `select_db()` method is the correct way to choose the default database for subsequent queries. This method is called on an existing `mysqli` connection object, with the desired database name passed as an argument. It ensures that all subsequent SQL operations are directed to the specified database.

The number of parameters that a POST operation provides in the URL must be counted. The proper method is:

Answer: count($_POST);

The `$_POST` superglobal array in PHP automatically collects all data submitted via an HTTP POST request. To determine the number of parameters sent in a POST operation, you can simply use the `count()` function on the `$_POST` array. This will return the total number of key-value pairs that were submitted through the form.

In Laravel, which of the following creates a controller?

Answer: php artisan make:controller generate

In Laravel, the `php artisan make:controller` command is used to generate a new controller class. You provide the desired name for the controller as an argument to this command, for example, `php artisan make:controller UserController`. The option `generate` in the correct answer is a placeholder for the actual controller name you wish to create.

Which of the following files does Laravel use to set up database connections?

Answer: .ENV file

Laravel primarily uses the `.env` file for environment-specific configuration, which includes sensitive details like database connection settings. This file stores critical information such as the database host, username, password, and database name. These values are then loaded into the application's configuration, allowing for flexible and secure management of environment settings.

Which of the subsequent parameters is not a factor in file uploads?

Answer: max_input_time

While `max_input_time` limits the time a script spends parsing request data, it is not a direct factor in the *size* or *execution* of a file upload itself. The primary PHP configuration directives that directly influence file uploads are `upload_max_filesize` (maximum size of an individual uploaded file), `post_max_size` (maximum size of all POST data, including files), and `max_execution_time` (maximum time a script is allowed to run).

What programming language is Laravel developed in?

Answer: PHP

Laravel is a free, open-source web framework built entirely on the PHP programming language. It is designed for the development of web applications following the model-view-controller (MVC) architectural pattern. Its foundation leverages PHP's features and extensive ecosystem, making it a popular choice for web development.

Which one of these will display the Laravel version?

Answer: php artisan --version

The `php artisan` command-line interface is Laravel's primary tool for interacting with the framework. To quickly check the currently installed Laravel version, you can use the `--version` flag with the `artisan` command. This command will output the framework's version number directly in your terminal, providing immediate information about your Laravel installation.