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<?php |
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/** |
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* Provides database connectivity for PDO |
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* |
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* PHP Version 5 |
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* |
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* @category Core |
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* @package Database |
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* @author Hans-Joachim Piepereit <[email protected]> |
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* @copyright 2013 cSphere Team |
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* @license http://opensource.org/licenses/bsd-license Simplified BSD License |
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* @link http://www.csphere.eu |
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**/ |
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namespace csphere\core\database; |
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/** |
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* Provides database connectivity for PDO |
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* |
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* @category Core |
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* @package Database |
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* @author Hans-Joachim Piepereit <[email protected]> |
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* @copyright 2013 cSphere Team |
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* @license http://opensource.org/licenses/bsd-license Simplified BSD License |
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* @link http://www.csphere.eu |
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**/ |
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abstract class Base_PDO extends \csphere\core\database\Base |
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{ |
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/** |
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* Stores the database connection |
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**/ |
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protected $con = null; |
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/** |
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* Returns a formatted array with statistics |
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* |
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* @return array |
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**/ |
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public function info() |
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{ |
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$info = parent::info(); |
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$info['client'] = $this->con->getAttribute(\PDO::ATTR_CLIENT_VERSION); |
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$info['server'] = $this->con->getAttribute(\PDO::ATTR_SERVER_VERSION); |
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$info['version'] = phpversion($info['driver']); |
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return $info; |
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} |
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/** |
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* Handle database driver specific transactions |
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* |
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* @param string $command One of these strings: begin, commit, rollback |
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* |
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* @return boolean |
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**/ |
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public function transaction($command) |
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{ |
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// Execute requested command |
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if ($command == 'commit') { |
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$result = $this->con->commit(); |
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} elseif ($command == 'rollback') { |
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$result = $this->con->rollBack(); |
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} else { |
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$result = $this->con->beginTransaction(); |
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} |
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return $result; |
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} |
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/** |
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* Sends a command to the database and gets the affected rows |
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* |
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* @param string $prepare Prepared query string with placeholders |
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* @param array $assoc Array with columns and values |
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* @param boolean $replace If more than {pre} needs to be replaced |
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* @param boolean $insertid Return the last insert id instead of a rowcount |
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* @param boolean $log Defaults to true which enables log files if used |
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* |
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* @return integer |
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**/ |
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public function exec( |
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$prepare, array $assoc, $replace = false, $insertid = false, $log = true |
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) { |
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// Apply replaces if required |
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if (!empty($replace)) { |
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$prepare = $this->replace($prepare); |
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} |
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$statement = $this->_execute($prepare, $assoc, $log); |
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// Determine what to return |
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if (empty($insertid)) { |
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$result = $statement->rowCount(); |
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} else { |
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$result = $this->insertID(); |
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} |
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return (int)$result; |
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} |
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/** |
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* Returns the ID of the last insert query |
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* |
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* @return integer |
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**/ |
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protected function insertId() |
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{ |
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return (int)$this->con->lastInsertId(); |
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} |
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/** |
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* Sends a query to the database and fetches the result |
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* |
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* @param string $prepare Prepared query string with placeholders |
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* @param array $assoc Array with columns and values |
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* @param integer $first Number of the first dataset to show |
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* @param integer $max Number of datasets to show from first on |
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* |
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* @return array |
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**/ |
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public function query($prepare, array $assoc, $first = 0, $max = 1) |
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{ |
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// Attach limit vars first and max |
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if ($first != 0 || $max != 0) { |
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$prepare .= ' ' . $this->limits($first, $max); |
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} |
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$statement = $this->_execute($prepare, $assoc, false); |
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// Determine what to return |
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if ($max == 1) { |
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$result = $statement->fetch(\PDO::FETCH_ASSOC); |
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if (!is_array($result)) { |
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if ($result === false) { |
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$result = []; |
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} else { |
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$result = [$result]; |
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} |
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} |
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} else { |
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$result = $statement->fetchAll(\PDO::FETCH_ASSOC); |
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} |
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return (array)$result; |
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} |
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/** |
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* Executes a query |
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* |
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* @param string $prepare Prepared query string with placeholders |
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* @param array $assoc Array with columns and values |
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* @param boolean $log Save query info to log files |
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* |
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* @return \PDOStatement |
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**/ |
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private function _execute($prepare, array $assoc, $log) |
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{ |
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// Rewrite assoc array to use named placeholders |
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$data = []; |
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foreach ($assoc AS $key => $value) { |
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$data[':' . $key] = $value; |
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} |
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$prepare = str_replace('{pre}', $this->prefix . '_', $prepare); |
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// Log executed query |
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$this->log($prepare, $data, $log); |
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// Prepare and execute the statement |
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$statement = $this->con->prepare($prepare); |
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if (is_object($statement)) { |
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$statement->execute($data); |
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} else { |
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$info = $this->con->errorInfo(); |
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if (isset($info[2])) { |
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$info = $info[2]; |
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} |
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$this->error($prepare, $assoc, $info); |
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} |
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return $statement; |
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} |
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/** |
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* Builds the query string part for limit and offset |
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* |
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* @param integer $first Number of the first dataset to show |
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* @param integer $max Number of datasets to show from first on |
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* |
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* @return string |
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**/ |
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abstract protected function limits($first, $max); |
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/** |
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* Replaces driver specific query placeholders |
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* |
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* @param string $replace The string to use for replaces |
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* |
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* @return string |
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**/ |
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abstract protected function replace($replace); |
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} |
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csphere-cms /
cSphere
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