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<?php |
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/* |
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* This file is part of the PhpBotFramework. |
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* |
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* PhpBotFramework is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as |
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* published by the Free Software Foundation, version 3. |
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* |
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* PhpBotFramework is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace PhpBotFramework\Database; |
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use PDOException; |
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define('DATA_CONNECTION_FILE', './data/connection.json'); |
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trait Handler |
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{ |
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/** |
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* \addtogroup Bot Bot |
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* @{ |
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*/ |
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/** Pdo connection to the database. */ |
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public $pdo; |
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/** |
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* \brief Open a database connection using PDO. |
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* \details Provides a simpler way to initialize a database connection |
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* and create a PDO instance. |
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* @param $params Parameters for initialize connection. |
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* @return True on success. |
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*/ |
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public function connect(array $params = []) : bool |
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{ |
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if (empty($params) && file_exists('DATA_CONNECTION_FILE')) { |
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$params = json_decode(file_get_contents('DATA_CONNECTION_FILE'), true); |
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} |
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try { |
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$config = $this->stringify($this->mergeWithDefaults($params)); |
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$this->pdo = new \PDO($config, $params['username'], $params['password'], $params['option']); |
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$this->pdo->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION); |
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return true; |
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} catch (PDOException $e) { |
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echo 'Unable to connect to database, an error occured:' . $e->getMessage(); |
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} |
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return false; |
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} |
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protected function mergeWithDefaults($params) |
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{ |
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$DEFAULTS = [ 'adapter' => 'mysql', 'host' => 'localhost' ]; |
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return array_merge($DEFAULTS, $params); |
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} |
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/** \brief Returns a string that can passed to PDO in order to open connection. |
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* @param array $params Array containing parameter of the connection |
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*/ |
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protected function stringify($params) : string |
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{ |
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$response = $params['adapter'] . ':'; |
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unset($params['adapter']); |
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$fields = []; |
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foreach ($params as $field => $value) { |
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/** |
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*Check if the current field matches one of the fields |
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* that are passed to PDO in another way and so don't need |
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* to be included in the string. |
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*/ |
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if ($field === 'username' || $field === 'password') { |
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unset($params[$field]); |
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continue; |
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} |
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$fields[] = $field . '=' . $value; |
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} |
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return $response . join(';', $fields); |
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} |
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/** @} */ |
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} |
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DanySpin97 /
PhpBotFramework
