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<?php |
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namespace Stonks\DataLayer; |
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use PDO; |
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use PDOException; |
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use stdClass; |
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/** |
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* Class Connect |
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* |
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* @package Stonks\DataLayer |
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*/ |
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class Connect |
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{ |
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/** |
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* @var PDO|stdClass|null |
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*/ |
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private static $instance; |
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/** |
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* @var PDOException|stdClass|null |
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*/ |
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private static $error; |
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/** |
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* @param string|null $database |
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* @return PDO|null |
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*/ |
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public static function getInstance(?string $database = null): ?PDO |
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{ |
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if (empty(self::$instance)) { |
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if (array_key_exists('driver', DATA_LAYER_CONFIG)) { |
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self::getOnlyOneConnection(); |
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} else { |
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self::getMultipleConnections(); |
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} |
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} |
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if ($database && isset(self::$instance->$database)) { |
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return self::$instance->$database; |
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} |
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return (self::$instance instanceof PDO ? self::$instance : null); |
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} |
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/** |
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* @param string|null $database |
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* @return PDOException|null |
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*/ |
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public static function getError(?string $database = null): ?PDOException |
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{ |
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if ($database && isset(self::$error->$database)) { |
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return self::$error->$database; |
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} |
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return (self::$error instanceof PDOException ? self::$error : null); |
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} |
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/** |
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* @return void |
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*/ |
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private static function getOnlyOneConnection(): void |
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{ |
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try { |
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self::$instance = new PDO( |
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DATA_LAYER_CONFIG['driver'] . ':host=' . DATA_LAYER_CONFIG['host'] . ';dbname=' . DATA_LAYER_CONFIG['dbname'] . ';port=' . DATA_LAYER_CONFIG['port'], |
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DATA_LAYER_CONFIG['username'], |
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DATA_LAYER_CONFIG['passwd'], |
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DATA_LAYER_CONFIG['options'] |
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); |
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} catch (PDOException $exception) { |
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self::$error = $exception; |
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} |
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} |
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/** |
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* @return void |
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*/ |
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private static function getMultipleConnections(): void |
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{ |
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self::$instance = new stdClass(); |
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self::$error = new stdClass(); |
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foreach (DATA_LAYER_CONFIG as $key => $config) { |
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$dbname = (is_string($key) ? $key : $config['dbname']); |
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try { |
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self::$instance->$dbname = new PDO( |
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"{$config['driver']}:host={$config['host']};dbname={$config['dbname']};port={$config['port']}", |
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$config['username'], |
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$config['passwd'], |
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$config['options'] |
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); |
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} catch (PDOException $exception) { |
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self::$error->$dbname = $exception; |
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} |
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} |
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} |
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/** |
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* @param string|null $database |
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* @return PDO |
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*/ |
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public static function testConnection(?string $database = null): PDO |
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{ |
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$connect = self::getInstance($database); |
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if (is_null($connect) || !$connect instanceof PDO) { |
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throw (self::getError($database) ?? new PDOException("Unknown key or database '{$database}'")); |
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} |
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return $connect; |
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} |
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/** |
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* Connect constructor. |
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*/ |
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final private function __construct() |
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{ |
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} |
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124
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/** |
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* Connect clone. |
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*/ |
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127
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final private function __clone() |
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128
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{ |
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129
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|
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} |
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130
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} |
giovannialo /
datalayer
