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<?php |
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/** |
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* Class PostgreSQLDriver |
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* |
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* @filesource PostgreSQLDriver.php |
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* @created 21.02.2016 |
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* @package chillerlan\Database\Drivers\PostgreSQL |
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* @author Smiley <[email protected]> |
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* @copyright 2016 Smiley |
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* @license MIT |
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*/ |
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namespace chillerlan\Database\Drivers; |
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use chillerlan\Database\DBException; |
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/** |
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* |
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*/ |
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class PostgreSQLDriver extends DBDriverAbstract{ |
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/** |
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* Holds the database resource object |
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* |
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* @var resource |
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*/ |
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protected $db; |
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/** |
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* Establishes a database connection and returns the connection object |
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* |
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* @return \chillerlan\Database\Drivers\DBDriverInterface |
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* @throws \chillerlan\Database\DBException |
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*/ |
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public function connect():DBDriverInterface{ |
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if(gettype($this->db) === 'resource'){ |
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return $this; |
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} |
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// i am an ugly duckling. fix me please. |
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$options = [ |
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'--client_encoding='.$this->options->pgsql_charset, |
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]; |
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$conn_str = [ |
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'host=\''.$this->options->host.'\'', |
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'port=\''.(int)$this->options->port.'\'', |
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'dbname=\''.$this->options->database.'\'', |
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'user=\''.$this->options->username.'\'', |
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'password=\''.$this->options->password.'\'', |
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'options=\''.implode(' ', $options).'\'', |
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]; |
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if(!$this->db = pg_connect(implode(' ', $conn_str))){ |
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throw new DBException('Could not connect to the database.'); |
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} |
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return $this; |
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} |
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/** |
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* Closes a database connection |
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* |
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* @return bool |
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*/ |
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public function disconnect():bool{ |
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return pg_close($this->db); |
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} |
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/** |
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* Returns info about the used php client |
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* |
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* @return string php's database client string |
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*/ |
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public function getClientInfo():string{ |
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$ver = pg_version($this->db); |
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return 'PostgreSQL '.$ver['client'].' ('.$ver['client_encoding'].')'; |
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} |
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/** |
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* Returns info about the database server |
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* |
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* @return string database's serverinfo string |
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*/ |
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public function getServerInfo():string{ |
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$ver = pg_version($this->db); |
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return 'PostgreSQL '.$ver['server'].' ('.$ver['server_encoding'].', date style: '.$ver['DateStyle'].', time zone: '.$ver['TimeZone'].')'; |
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} |
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/** |
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* @param $data |
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* |
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* @return string |
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*/ |
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protected function __escape($data){ |
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return pg_escape_string($this->db, $data); |
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} |
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/** |
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* @param $result |
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* @param string|null $index |
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* @param bool $assoc |
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* |
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* @return bool|\chillerlan\Database\DBResult |
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*/ |
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protected function __getResult($result, string $index = null, bool $assoc = true){ |
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if(is_bool($result)){ |
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return $result; |
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} |
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$r = $this->getResult($assoc ? 'pg_fetch_assoc' : 'pg_fetch_row', [$result], $index, $assoc); |
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pg_free_result($result); |
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return $r; |
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} |
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/** |
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* @param string $sql |
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* @param string|null $index |
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* @param bool $assoc |
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* |
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* @return bool|\chillerlan\Database\DBResult |
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*/ |
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protected function __raw(string $sql, string $index = null, bool $assoc = true){ |
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return $this->__getResult(pg_query($sql), $index, $assoc); |
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} |
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/** |
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* @param string $sql |
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* @param array $values |
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* @param string|null $index |
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* @param bool $assoc |
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* |
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* @return bool|\chillerlan\Database\DBResult |
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*/ |
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protected function __prepared(string $sql, array $values = [], string $index = null, bool $assoc = true){ |
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pg_prepare($this->db, '', $sql); |
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return $this->__getResult(pg_execute($this->db, '', $values), $index, $assoc); |
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} |
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/** |
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* @param string $sql |
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* @param array $values |
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* |
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* @return bool |
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*/ |
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protected function __multi(string $sql, array $values){ |
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pg_prepare($this->db, '', $sql); |
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foreach($values as $row){ |
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pg_execute($this->db, '', $row); |
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} |
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return true; |
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} |
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/** |
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* @param string $sql |
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* @param array $data |
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* @param $callback |
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* |
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* @return bool |
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*/ |
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protected function __multi_callback(string $sql, array $data, $callback){ |
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pg_prepare($this->db, '', $sql); |
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foreach($data as $row){ |
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pg_execute($this->db, '', call_user_func_array($callback, [$row])); |
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} |
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return true; |
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} |
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} |
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chillerlan /
php-database
