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<?php |
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/** |
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* Class PostgreSQL |
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* |
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* @filesource PostgreSQL.php |
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* @created 28.06.2017 |
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* @package chillerlan\Database\Drivers |
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* @author Smiley <[email protected]> |
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* @copyright 2017 Smiley |
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* @license MIT |
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* |
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* @noinspection PhpComposerExtensionStubsInspection |
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*/ |
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namespace chillerlan\Database\Drivers; |
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use chillerlan\Database\{ |
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Dialects\Postgres, Result |
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}; |
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/** |
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* @property resource $db |
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*/ |
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class PostgreSQL extends DriverAbstract{ |
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protected string $dialect = Postgres::class; |
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/** @inheritdoc */ |
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public function connect():DriverInterface{ |
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if(gettype($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(' ', $options).'\'', |
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]; |
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try{ |
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$this->db = pg_connect(implode(' ', $conn_str)); |
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return $this; |
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} |
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catch(\Exception $e){ |
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throw new DriverException('db error: [PostgreSQL]: '.$e->getMessage()); |
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} |
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} |
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/** @inheritdoc */ |
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public function disconnect():bool{ |
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if(gettype($this->db) === 'resource'){ |
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return pg_close($this->db); |
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} |
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return true; |
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} |
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/** @inheritdoc */ |
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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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/** @inheritdoc */ |
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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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/** @inheritdoc */ |
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protected function __escape(string $data):string{ |
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return '\''.pg_escape_string($this->db, $data).'\''; // emulate PDO |
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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 $assoc |
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* |
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* @return bool|\chillerlan\Database\Result |
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*/ |
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protected function __getResult($result, string $index = null, bool $assoc = null){ |
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if(is_bool($result)){ |
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return $result; // @codeCoverageIgnore |
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} |
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$out = new Result(null, $this->convert_encoding_src, $this->convert_encoding_dest); |
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$i = 0; |
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while($row = call_user_func_array($assoc === true ? 'pg_fetch_assoc' : 'pg_fetch_row', [$result])){ |
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$key = $i; |
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$j = 0; |
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foreach($row as $k => $item){ |
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// https://gitter.im/arenanet/api-cdi?at=594326ba31f589c64fafe554 |
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$fieldType = pg_field_type($result, $j); |
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if($fieldType === 'bool'){ |
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$row[$k] = $item === 't'; |
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} |
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elseif(in_array($fieldType, ['int2', 'int4', 'int8'], true)){ |
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$row[$k] = (int)$item; |
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} |
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elseif(in_array($fieldType, ['float4', 'float8'], true)){ |
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$row[$k] = (float)$item; // @codeCoverageIgnore |
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} |
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$j++; |
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} |
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if($assoc && !empty($index)){ |
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$key = $row[$index]; |
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} |
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$out[$key] = $row; |
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$i++; |
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} |
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pg_free_result($result); |
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return $i === 0 ? true : $out; |
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} |
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/** @inheritdoc */ |
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protected function raw_query(string $sql, string $index = null, bool $assoc = null){ |
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return $this->__getResult(pg_query($sql), $index, $assoc); |
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} |
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/** @inheritdoc */ |
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protected function prepared_query(string $sql, array $values = null, string $index = null, bool $assoc = null){ |
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pg_prepare($this->db, '', $this->replaceParams($sql)); |
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return $this->__getResult(pg_execute($this->db, '', $values), $index, $assoc); |
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} |
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/** @inheritdoc */ |
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protected function multi_query(string $sql, array $values){ |
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pg_prepare($this->db, '', $this->replaceParams($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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/** @inheritdoc */ |
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protected function multi_callback_query(string $sql, iterable $data, $callback){ |
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pg_prepare($this->db, '', $this->replaceParams($sql)); |
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foreach($data as $k => $row){ |
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pg_execute($this->db, '', call_user_func_array($callback, [$row, $k])); |
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} |
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return true; |
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} |
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/** @inheritdoc */ |
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protected function replaceParams(string $sql):string{ |
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$i = 0; |
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return preg_replace_callback('/(\?)/', function() use (&$i){ |
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return '$'.++$i; |
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}, $sql); |
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} |
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} |
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