/treeview-master/libs/dibi/drivers/mysqli.php
PHP | 524 lines | 242 code | 105 blank | 177 comment | 31 complexity | 67c6e9c9f18821e9d4fc33818a6c9680 MD5 | raw file
Possible License(s): BSD-3-Clause, GPL-2.0
- <?php
- /**
- * dibi - tiny'n'smart database abstraction layer
- * ----------------------------------------------
- *
- * @copyright Copyright (c) 2005, 2010 David Grudl
- * @license http://dibiphp.com/license dibi license
- * @link http://dibiphp.com
- * @package dibi
- */
- /**
- * The dibi driver for MySQL database via improved extension.
- *
- * Connection options:
- * - 'host' - the MySQL server host name
- * - 'port' - the port number to attempt to connect to the MySQL server
- * - 'socket' - the socket or named pipe
- * - 'username' (or 'user')
- * - 'password' (or 'pass')
- * - 'persistent' - try to find a persistent link?
- * - 'database' - the database name to select
- * - 'charset' - character encoding to set
- * - 'unbuffered' - sends query without fetching and buffering the result rows automatically?
- * - 'options' - driver specific constants (MYSQLI_*)
- * - 'sqlmode' - see http://dev.mysql.com/doc/refman/5.0/en/server-sql-mode.html
- * - 'lazy' - if TRUE, connection will be established only when required
- * - 'resource' - connection resource (optional)
- *
- * @copyright Copyright (c) 2005, 2010 David Grudl
- * @package dibi
- */
- class DibiMySqliDriver extends DibiObject implements IDibiDriver
- {
- const ERROR_ACCESS_DENIED = 1045;
- const ERROR_DUPLICATE_ENTRY = 1062;
- const ERROR_DATA_TRUNCATED = 1265;
- /** @var mysqli Connection resource */
- private $connection;
- /** @var mysqli_result Resultset resource */
- private $resultSet;
- /** @var bool Is buffered (seekable and countable)? */
- private $buffered;
- /**
- * @throws DibiException
- */
- public function __construct()
- {
- if (!extension_loaded('mysqli')) {
- throw new DibiDriverException("PHP extension 'mysqli' is not loaded.");
- }
- }
- /**
- * Connects to a database.
- * @return void
- * @throws DibiException
- */
- public function connect(array &$config)
- {
- DibiConnection::alias($config, 'options');
- DibiConnection::alias($config, 'database');
- if (isset($config['resource'])) {
- $this->connection = $config['resource'];
- } else {
- // default values
- if (!isset($config['username'])) $config['username'] = ini_get('mysqli.default_user');
- if (!isset($config['password'])) $config['password'] = ini_get('mysqli.default_pw');
- if (!isset($config['socket'])) $config['socket'] = ini_get('mysqli.default_socket');
- if (!isset($config['port'])) $config['port'] = NULL;
- if (!isset($config['host'])) {
- $host = ini_get('mysqli.default_host');
- if ($host) {
- $config['host'] = $host;
- $config['port'] = ini_get('mysqli.default_port');
- } else {
- $config['host'] = NULL;
- $config['port'] = NULL;
- }
- }
- $this->connection = mysqli_init();
- @mysqli_real_connect($this->connection, $config['host'], $config['username'], $config['password'], $config['database'], $config['port'], $config['socket'], $config['options']); // intentionally @
- if ($errno = mysqli_connect_errno()) {
- throw new DibiDriverException(mysqli_connect_error(), $errno);
- }
- }
- if (isset($config['charset'])) {
- $ok = FALSE;
- if (version_compare(PHP_VERSION , '5.1.5', '>=')) {
- // affects the character set used by mysql_real_escape_string() (was added in MySQL 5.0.7 and PHP 5.0.5, fixed in PHP 5.1.5)
- $ok = @mysqli_set_charset($this->connection, $config['charset']); // intentionally @
- }
- if (!$ok) {
- $ok = @mysqli_query($this->connection, "SET NAMES '$config[charset]'"); // intentionally @
- if (!$ok) {
- throw new DibiDriverException(mysqli_error($this->connection), mysqli_errno($this->connection));
- }
- }
- }
- if (isset($config['sqlmode'])) {
- if (!@mysqli_query($this->connection, "SET sql_mode='$config[sqlmode]'")) { // intentionally @
- throw new DibiDriverException(mysqli_error($this->connection), mysqli_errno($this->connection));
- }
- }
- $this->buffered = empty($config['unbuffered']);
- }
- /**
- * Disconnects from a database.
- * @return void
- */
- public function disconnect()
- {
- mysqli_close($this->connection);
- }
- /**
- * Executes the SQL query.
- * @param string SQL statement.
- * @return IDibiDriver|NULL
- * @throws DibiDriverException
- */
- public function query($sql)
- {
- $this->resultSet = @mysqli_query($this->connection, $sql, $this->buffered ? MYSQLI_STORE_RESULT : MYSQLI_USE_RESULT); // intentionally @
- if (mysqli_errno($this->connection)) {
- throw new DibiDriverException(mysqli_error($this->connection), mysqli_errno($this->connection), $sql);
- }
- return is_object($this->resultSet) ? clone $this : NULL;
- }
- /**
- * Retrieves information about the most recently executed query.
- * @return array
- */
- public function getInfo()
- {
- $res = array();
- preg_match_all('#(.+?): +(\d+) *#', mysqli_info($this->connection), $matches, PREG_SET_ORDER);
- foreach ($matches as $m) {
- $res[$m[1]] = (int) $m[2];
- }
- return $res;
- }
- /**
- * Gets the number of affected rows by the last INSERT, UPDATE or DELETE query.
- * @return int|FALSE number of rows or FALSE on error
- */
- public function getAffectedRows()
- {
- return mysqli_affected_rows($this->connection);
- }
- /**
- * Retrieves the ID generated for an AUTO_INCREMENT column by the previous INSERT query.
- * @return int|FALSE int on success or FALSE on failure
- */
- public function getInsertId($sequence)
- {
- return mysqli_insert_id($this->connection);
- }
- /**
- * Begins a transaction (if supported).
- * @param string optional savepoint name
- * @return void
- * @throws DibiDriverException
- */
- public function begin($savepoint = NULL)
- {
- $this->query($savepoint ? "SAVEPOINT $savepoint" : 'START TRANSACTION');
- }
- /**
- * Commits statements in a transaction.
- * @param string optional savepoint name
- * @return void
- * @throws DibiDriverException
- */
- public function commit($savepoint = NULL)
- {
- $this->query($savepoint ? "RELEASE SAVEPOINT $savepoint" : 'COMMIT');
- }
- /**
- * Rollback changes in a transaction.
- * @param string optional savepoint name
- * @return void
- * @throws DibiDriverException
- */
- public function rollback($savepoint = NULL)
- {
- $this->query($savepoint ? "ROLLBACK TO SAVEPOINT $savepoint" : 'ROLLBACK');
- }
- /**
- * Returns the connection resource.
- * @return mysqli
- */
- public function getResource()
- {
- return $this->connection;
- }
- /********************* SQL ****************d*g**/
- /**
- * Encodes data for use in a SQL statement.
- * @param mixed value
- * @param string type (dibi::TEXT, dibi::BOOL, ...)
- * @return string encoded value
- * @throws InvalidArgumentException
- */
- public function escape($value, $type)
- {
- switch ($type) {
- case dibi::TEXT:
- return "'" . mysqli_real_escape_string($this->connection, $value) . "'";
- case dibi::BINARY:
- return "_binary'" . mysqli_real_escape_string($this->connection, $value) . "'";
- case dibi::IDENTIFIER:
- $value = str_replace('`', '``', $value);
- return '`' . str_replace('.', '`.`', $value) . '`';
- case dibi::BOOL:
- return $value ? 1 : 0;
- case dibi::DATE:
- return $value instanceof DateTime ? $value->format("'Y-m-d'") : date("'Y-m-d'", $value);
- case dibi::DATETIME:
- return $value instanceof DateTime ? $value->format("'Y-m-d H:i:s'") : date("'Y-m-d H:i:s'", $value);
- default:
- throw new InvalidArgumentException('Unsupported type.');
- }
- }
- /**
- * Decodes data from result set.
- * @param string value
- * @param string type (dibi::BINARY)
- * @return string decoded value
- * @throws InvalidArgumentException
- */
- public function unescape($value, $type)
- {
- if ($type === dibi::BINARY) {
- return $value;
- }
- throw new InvalidArgumentException('Unsupported type.');
- }
- /**
- * Injects LIMIT/OFFSET to the SQL query.
- * @param string &$sql The SQL query that will be modified.
- * @param int $limit
- * @param int $offset
- * @return void
- */
- public function applyLimit(&$sql, $limit, $offset)
- {
- if ($limit < 0 && $offset < 1) return;
- // see http://dev.mysql.com/doc/refman/5.0/en/select.html
- $sql .= ' LIMIT ' . ($limit < 0 ? '18446744073709551615' : (int) $limit)
- . ($offset > 0 ? ' OFFSET ' . (int) $offset : '');
- }
- /********************* result set ****************d*g**/
- /**
- * Returns the number of rows in a result set.
- * @return int
- */
- public function getRowCount()
- {
- if (!$this->buffered) {
- throw new DibiDriverException('Row count is not available for unbuffered queries.');
- }
- return mysqli_num_rows($this->resultSet);
- }
- /**
- * Fetches the row at current position and moves the internal cursor to the next position.
- * @param bool TRUE for associative array, FALSE for numeric
- * @return array array on success, nonarray if no next record
- * @internal
- */
- public function fetch($assoc)
- {
- return mysqli_fetch_array($this->resultSet, $assoc ? MYSQLI_ASSOC : MYSQLI_NUM);
- }
- /**
- * Moves cursor position without fetching row.
- * @param int the 0-based cursor pos to seek to
- * @return boolean TRUE on success, FALSE if unable to seek to specified record
- * @throws DibiException
- */
- public function seek($row)
- {
- if (!$this->buffered) {
- throw new DibiDriverException('Cannot seek an unbuffered result set.');
- }
- return mysqli_data_seek($this->resultSet, $row);
- }
- /**
- * Frees the resources allocated for this result set.
- * @return void
- */
- public function free()
- {
- mysqli_free_result($this->resultSet);
- $this->resultSet = NULL;
- }
- /**
- * Returns metadata for all columns in a result set.
- * @return array
- */
- public function getColumnsMeta()
- {
- static $types;
- if (empty($types)) {
- $consts = get_defined_constants(TRUE);
- foreach ($consts['mysqli'] as $key => $value) {
- if (strncmp($key, 'MYSQLI_TYPE_', 12) === 0) {
- $types[$value] = substr($key, 12);
- }
- }
- }
- $count = mysqli_num_fields($this->resultSet);
- $res = array();
- for ($i = 0; $i < $count; $i++) {
- $row = (array) mysqli_fetch_field_direct($this->resultSet, $i);
- $res[] = array(
- 'name' => $row['name'],
- 'table' => $row['orgtable'],
- 'fullname' => $row['table'] ? $row['table'] . '.' . $row['name'] : $row['name'],
- 'nativetype' => $types[$row['type']],
- 'vendor' => $row,
- );
- }
- return $res;
- }
- /**
- * Returns the result set resource.
- * @return mysqli_result
- */
- public function getResultResource()
- {
- return $this->resultSet;
- }
- /********************* reflection ****************d*g**/
- /**
- * Returns list of tables.
- * @return array
- */
- public function getTables()
- {
- /*$this->query("
- SELECT TABLE_NAME as name, TABLE_TYPE = 'VIEW' as view
- FROM INFORMATION_SCHEMA.TABLES
- WHERE TABLE_SCHEMA = DATABASE()
- ");*/
- $this->query("SHOW FULL TABLES");
- $res = array();
- while ($row = $this->fetch(FALSE)) {
- $res[] = array(
- 'name' => $row[0],
- 'view' => isset($row[1]) && $row[1] === 'VIEW',
- );
- }
- $this->free();
- return $res;
- }
- /**
- * Returns metadata for all columns in a table.
- * @param string
- * @return array
- */
- public function getColumns($table)
- {
- /*$table = $this->escape($table, dibi::TEXT);
- $this->query("
- SELECT *
- FROM INFORMATION_SCHEMA.COLUMNS
- WHERE TABLE_NAME = $table AND TABLE_SCHEMA = DATABASE()
- ");*/
- $this->query("SHOW FULL COLUMNS FROM `$table`");
- $res = array();
- while ($row = $this->fetch(TRUE)) {
- $type = explode('(', $row['Type']);
- $res[] = array(
- 'name' => $row['Field'],
- 'table' => $table,
- 'nativetype' => strtoupper($type[0]),
- 'size' => isset($type[1]) ? (int) $type[1] : NULL,
- 'nullable' => $row['Null'] === 'YES',
- 'default' => $row['Default'],
- 'autoincrement' => $row['Extra'] === 'auto_increment',
- 'vendor' => $row,
- );
- }
- $this->free();
- return $res;
- }
- /**
- * Returns metadata for all indexes in a table.
- * @param string
- * @return array
- */
- public function getIndexes($table)
- {
- /*$table = $this->escape($table, dibi::TEXT);
- $this->query("
- SELECT *
- FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
- WHERE TABLE_NAME = $table AND TABLE_SCHEMA = DATABASE()
- AND REFERENCED_COLUMN_NAME IS NULL
- ");*/
- $this->query("SHOW INDEX FROM `$table`");
- $res = array();
- while ($row = $this->fetch(TRUE)) {
- $res[$row['Key_name']]['name'] = $row['Key_name'];
- $res[$row['Key_name']]['unique'] = !$row['Non_unique'];
- $res[$row['Key_name']]['primary'] = $row['Key_name'] === 'PRIMARY';
- $res[$row['Key_name']]['columns'][$row['Seq_in_index'] - 1] = $row['Column_name'];
- }
- $this->free();
- return array_values($res);
- }
- /**
- * Returns metadata for all foreign keys in a table.
- * @param string
- * @return array
- */
- public function getForeignKeys($table)
- {
- throw new NotImplementedException;
- }
- }