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<?php |
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namespace suda\database\connection; |
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use PDO; |
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use PDOException; |
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use ReflectionException; |
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use suda\database\statement\QueryStatement; |
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use suda\database\exception\SQLException; |
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/** |
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* 数据表链接对象 |
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* |
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*/ |
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class MySQLConnection extends Connection |
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{ |
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protected $type = 'mysql'; |
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/** |
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* @return mixed|string |
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* @throws SQLException |
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*/ |
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public function getDsn() |
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{ |
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if (!array_key_exists('host', $this->config)) { |
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throw new SQLException('config missing host'); |
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} |
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$host = $this->config['host']; |
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$charset = $this->config['charset'] ?? 'utf8mb4'; |
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$port = $this->config['port'] ?? 3306; |
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if (array_key_exists('name', $this->config)) { |
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return $this->type.':host='.$host.';dbname='.$this->config['name'].';charset='.$charset.';port='.$port; |
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} |
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return $this->type.':host='.$host.';charset='.$charset.';port='.$port; |
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} |
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/** |
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* @return PDO |
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* @throws SQLException |
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*/ |
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public function createPDO(): PDO |
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{ |
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try { |
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$user = $this->config['user'] ?? 'root'; |
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$password = $this->config['password'] ?? ''; |
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$pdo = new PDO($this->getDsn(), $user, $password); |
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$this->id = static::$connectionCount; |
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static::$connectionCount ++; |
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return $pdo; |
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} catch (PDOException $e) { |
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throw new SQLException(sprintf( |
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"%s connect database error:%s", |
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$this->__toString(), |
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$e->getMessage() |
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), $e->getCode(), $e); |
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} |
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} |
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/** |
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* @param string $database |
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* @return mixed |
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* @throws SQLException |
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* @throws ReflectionException |
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*/ |
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public function switchDatabase(string $database) |
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{ |
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return $this->query(new QueryStatement('USE `' . $database.'`')); |
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} |
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public function rawTableName(string $name) |
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{ |
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$prefix = $this->config['prefix'] ?? ''; |
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return $prefix.$name; |
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} |
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} |
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dxkite /
suda
