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Dependency Injection.
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<?php | |
namespace DesignPatterns\Structural\DependencyInjection; | |
/** | |
* Class DatabaseConfiguration | |
* | |
* @package DesignPatterns\Structural\DependencyInjection | |
*/ | |
class DatabaseConfiguration { | |
/** | |
* @var string | |
*/ | |
private $host; | |
/** | |
* @var int | |
*/ | |
private $port; | |
/** | |
* @var string | |
*/ | |
private $username; | |
/** | |
* @var string | |
*/ | |
private $password; | |
/** | |
* DatabaseConfiguration constructor. | |
* | |
* @param string $host | |
* @param int $port | |
* @param string $username | |
* @param string $password | |
*/ | |
public function __construct(string $host, int $port, string $username, string $password) { | |
$this->host = $host; | |
$this->port = $port; | |
$this->username = $username; | |
$this->password = $password; | |
} | |
/** | |
* @return string | |
*/ | |
public function getHost(): string { | |
return $this->host; | |
} | |
/** | |
* @return int | |
*/ | |
public function getPort(): int { | |
return $this->port; | |
} | |
/** | |
* @return string | |
*/ | |
public function getUsername(): string { | |
return $this->username; | |
} | |
/** | |
* @return string | |
*/ | |
public function getPassword(): string { | |
return $this->password; | |
} | |
} |
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<?php | |
namespace DesignPatterns\Structural\DependencyInjection; | |
/** | |
* Class DatabaseConnection | |
* | |
* @package DesignPatterns\Structural\DependencyInjection | |
*/ | |
class DatabaseConnection { | |
/** | |
* @var DatabaseConfiguration | |
*/ | |
private $configuration; | |
/** | |
* DatabaseConnection constructor. | |
* | |
* @param \DesignPatterns\Structural\DependencyInjection\DatabaseConfiguration $config | |
*/ | |
public function __construct(DatabaseConfiguration $config) { | |
$this->configuration = $config; | |
} | |
/** | |
* @return string | |
*/ | |
public function getDsn(): string { | |
return sprintf( | |
'%s:%s@%s:%d', | |
$this->configuration->getUsername(), | |
$this->configuration->getPassword(), | |
$this->configuration->getHost(), | |
$this->configuration->getPort() | |
); | |
} | |
} |
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<?php | |
namespace DesignPatterns\Structural\DependencyInjection; | |
require_once 'DatabaseConfiguration.php'; | |
require_once 'DatabaseConnection.php'; | |
$dbconfig = new DatabaseConfiguration('localhost', '3306', 'root', 'root'); | |
$dbconnection = new DatabaseConnection($dbconfig); | |
$test = $dbconnection->getDsn(); | |
var_dump($test); |
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