Database - Installation and Configuration

The cycle/database component is included by default in Web and GRPC builds. The DBAL focuses mainly on unifying database access rather than trying to get 100% of the specific DBMS feature set.

However, you can always use direct queries to bypass the spiral abstractions.

Spiral DBAL supports MySQL, MariaDB, SQLite, PostgresSQL, and SQLServer (Windows) databases.

Installation

To install the component in alternative bundles or as a standalone library:

$ composer require cycle/database

Declare Connection

To create new database connection add a new section or alter existed options of drivers section of your configuration, you can use env function to keep your passwords and usernames separately.

<?php

require_once "vendor/autoload.php";

use Cycle\Database\Config\DatabaseConfig;
use Cycle\Database\DatabaseManager;
use Cycle\Database\Driver;

$dbal = new DatabaseManager(new DatabaseConfig([
    'databases' => [
        'default' => ['driver' => 'runtime'],
    ],
    'connections' => [
        'mysql'     => [
            'driver'     => Driver\MySQL\MySQLDriver::class,
            'options'    => [
                'connection' => 'mysql:host=127.0.0.1;dbname=' . env('DB_NAME'),
                'username'   => 'username',
                'password'   => 'password',
            ]
        ],
        'postgres'  => [
            'driver'     => Driver\Postgres\PostgresDriver::class,
            'options'    => [
                'connection' => 'pgsql:host=127.0.0.1;dbname=' . env('DB_NAME'),
                'username'   => 'username',
                'password'   => 'password',
            ]
        ],
        'runtime'   => [
            'driver'     => Driver\SQLite\SQLiteDriver::class,
            'options'    => [
                'connection' => 'sqlite:' . directory('runtime') . 'runtime.db',
                'username'   => 'sqlite',
                'password'   => '',
            ]
        ],
        'sqlServer' => [
            'driver'     => Driver\SQLServer\SQLServerDriver::class,
            'options'    => [
                'connection' => 'sqlsrv:Server=MY-PC;Database=' . env('DB_NAME'),
                'username'   => 'username',
                'password'   => 'password',
            ]
        ]
    ],
]));

Use connection option options to set PDO specific attributes.

Declare Database

In order to access connected database we have to add it into databases section first:

<?php

declare(strict_types=1);

require_once "vendor/autoload.php";

use Cycle\Database\Driver;

$dbal = new DatabaseManager(new DatabaseConfig([
    'databases'   => [
        'primary' => [
           'driver'  => 'mysql',
           'prefix'  => 'primary_'
        ],
        'secondary'=> [
            'driver'  => 'mysql',
            'prefix'  => 'secondary_'
        ]
    ],
    'connections' => [
        // ...
    ],
]));

var_dump($dbal->database('primary'));

var_dump($dbal->database('secondary'));

Aliases

Your application and modules can access the database in multiple different ways. Database aliasing allows you to use separate databases with relation to one physical database.

<?php

declare(strict_types=1);

require_once "vendor/autoload.php";

use Cycle\Database\Driver;

$dbal = new DatabaseManager(new DatabaseConfig([
    'aliases'   => [
        'db'    => 'primary',
        'other' => 'secondary'
    ],
    'databases'   => [
        // ...
    ],
    'connections' => [
        // ...
    ],
]));

var_dump($dbal->database('db'));

var_dump($dbal->database('other'));

To create Database instance manually (without the DatabaseManager):


use Cycle\Database\Driver;

$driver = new Driver\SQLite\SQLiteDriver(
   [
       'connection' => 'sqlite:db.db'
   ]
);
       
$db = new Database\Database(
   'name',
   '',
   $driver,
   $driver // read only driver (optional)
);

var_dump($db->getTables());
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