Installing Yii2 framework

INSTALLING YII2 ADVANCED APPLICATION

Step 1: Install Composer Composer is a dependency manager for PHP, crucial for installing Yii2. Use the following commands to install Composer:

curl -sS https://getcomposer.org/installer | php sudo mv composer.phar /usr/local/bin/composer

This will download and move Composer to a global location for easy access.

Step 2: Install Yii2 Basic Package Once Composer is installed, you can install the Yii2 basic application template by running:

composer create-project --prefer-dist yiisoft/yii2-app-basic basic

This command creates a new directory named basic containing your Yii2 basic application.

INSTALLING YII2 ADVANCED APPLICATION

Step 1: Install Yii2 Advanced Package

First, ensure Composer is installed (as shown above). Then, install the Yii2 advanced application template:

composer create-project --prefer-dist yiisoft/yii2-app-advanced yii-application

This command sets up the advanced template in a directory named yii-application.

Step 2: Initialize the Project

Navigate to the project directory in your terminal and run:

php init

You'll be prompted to select the environment. Choose "development" to generate the necessary configuration files for your development environment.

Step 3: Create a Database

Create a new database for your Yii2 application using phpMyAdmin or any other database management tool.

Step 4: Connect the Database

Edit the database connection settings in common/config/main-local.php to match your database credentials:

return [
    'components' => [
        'db' => [
            'class' => 'yii\db\Connection',
            'dsn' => 'mysql:host=localhost;dbname=your_database_name',
            'username' => 'your_username',
            'password' => 'your_password',
            'charset' => 'utf8',
        ],
    ],
];

Resolving Errors Encountered When Installing Yii2

Resolving PHP Version Errors

If you encounter errors related to the PHP version, you may need to install specific PHP extensions. For example, to install the php-dom extension for PHP 8.2, use the following command:

sudo apt-get install php8.2-dom

Installing PHP-CURL

PHP-CURL is an essential extension for handling URL requests in PHP. To install it, run:

sudo apt-get install php-curl