How to connect to database in zendFramework 2 - php

Question

I can't find where to connect to the database in ZF2, where to create the application.ini to setup required data or in the module->bootstrap method, please help

Answer 1

As others have pointed out, you can add something like the following to your config/autoload/global.php or config/autoload/local.php.
'db' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=mydb;host=localhost',
'username' => 'root',
'password' => '',
'driver_options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
),
Note that it is best practice to add sensitive information (e.g. the password) to the local.php file. The reason is that this file should be ignored by version control software and is ignored by Git by default if you are using the Zend Skeleton Application due to a .gitignore file.
To use the connection, you can fetch the database adapter from the service manager. For instance, you can do the following in a controller action:
public function someAction() {
$dbAdapter = $this->serviceLocator->get('Zend\Db\Adapter\Adapter');
// Do something with the database adapter, e.g.:
$dbAdapter->query('SELECT username FROM user WHERE id = ?', array(37));
}
The manual should get you started on how you can use the database adapter to execute queries; you will probably want to make use of Zend\Db\Sql, so the above is just an example. Note that you would ideally not access the database (i.e. execute database queries) directly within your controllers, but the above is just an example; it is quite easy to inject the database adapter into a Data Access Layer (DAL) or service layer if you are using any of those design patterns.
What happens above is that the Zend\Db\Adapter\AdapterServiceFactory is invoked. This happens because the class implements the Zend\ServiceManager\FactoryInterface, which the service manager checks against (see the service manager's source code for more information).
The Zend\Db\Adapter\AdapterServiceFactory factory fetches the configuration from the service manager and reads the 'db' key. This configuration (as shown in the first code example) is then passed to the Zend\Db\Adapter\Adapter's constructor which configures the instantiated database adapter.
So, all you have to do is to configure your database connection under the db key in a configuration file and fetch it with the Zend\Db\Adapter\Adapter key from the service manager - then the rest is done for you automatically.
EDIT:
Make sure that you have enabled the AdapterServiceFactory in your configuration for the above to work. Provided that you are using the ZendSkeletonApplication, add the below within config/autoload/global.php.
return array(
'service_manager' => array(
'factories' => array(
'Zend\Db\Adapter\Adapter' => 'Zend\Db\Adapter\AdapterServiceFactory',
),
),
);

Answer 2

to config ( global.php etc ):
'db' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=mydb;host=localhost',
'username' => 'mydb',
'password' => '',
'driver_options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),

Answer 3

Go to diectory : you_application_folder/config/autoload/
in global.php
<?php
return array(
'db' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=mydb;host=localhost',
'driver_options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
);
?>
in local.php // save important data here
<?php
return array(
'db' => array(
'username' => '*****',
'password' => '*****',
);
?>