mirror of
https://github.com/dg/dibi.git
synced 2025-02-24 19:02:36 +01:00
8a6d664876
* added doc comments to drivers * DibiDriver::prepare() renamed to config() * fixed connection error handling in Postgre driver
383 lines
11 KiB
PHP
383 lines
11 KiB
PHP
<?php
|
|
|
|
/**
|
|
* dibi - tiny'n'smart database abstraction layer
|
|
* ----------------------------------------------
|
|
*
|
|
* Copyright (c) 2005, 2007 David Grudl aka -dgx- (http://www.dgx.cz)
|
|
*
|
|
* This source file is subject to the "dibi license" that is bundled
|
|
* with this package in the file license.txt.
|
|
*
|
|
* For more information please see http://php7.org/dibi/
|
|
*
|
|
* @author David Grudl
|
|
* @copyright Copyright (c) 2005, 2007 David Grudl
|
|
* @license http://php7.org/dibi/license (dibi license)
|
|
* @category Database
|
|
* @package Dibi
|
|
* @link http://php7.org/dibi/
|
|
*/
|
|
|
|
|
|
/**
|
|
* The dibi driver for MySQLi database
|
|
*
|
|
* @version $Revision$ $Date$
|
|
*/
|
|
class DibiMySqliDriver extends DibiDriver
|
|
{
|
|
/**
|
|
* Describes how convert some datatypes to SQL command
|
|
* @var array
|
|
*/
|
|
public $formats = array(
|
|
'TRUE' => "1",
|
|
'FALSE' => "0",
|
|
'date' => "'Y-m-d'",
|
|
'datetime' => "'Y-m-d H:i:s'",
|
|
);
|
|
|
|
|
|
/**
|
|
* Creates object and (optionally) connects to a database
|
|
*
|
|
* @param array connect configuration
|
|
* @throws DibiException
|
|
*/
|
|
public function __construct(array $config)
|
|
{
|
|
self::config($config, 'username', 'user');
|
|
self::config($config, 'password', 'pass');
|
|
self::config($config, 'database');
|
|
|
|
// default values
|
|
if ($config['username'] === NULL) $config['username'] = ini_get('mysqli.default_user');
|
|
if ($config['password'] === NULL) $config['password'] = ini_get('mysqli.default_password');
|
|
if (!isset($config['host'])) {
|
|
$config['host'] = ini_get('mysqli.default_host');
|
|
if (!isset($config['port'])) ini_get('mysqli.default_port');
|
|
if (!isset($config['host'])) $config['host'] = 'localhost';
|
|
}
|
|
|
|
parent::__construct($config);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Connects to a database
|
|
*
|
|
* @throws DibiException
|
|
* @return resource
|
|
*/
|
|
protected function connect()
|
|
{
|
|
if (!extension_loaded('mysqli')) {
|
|
throw new DibiException("PHP extension 'mysqli' is not loaded");
|
|
}
|
|
|
|
$config = $this->getConfig();
|
|
|
|
$connection = @mysqli_connect($config['host'], $config['username'], $config['password'], $config['database'], $config['port']);
|
|
|
|
if (!$connection) {
|
|
throw new DibiDatabaseException(mysqli_connect_error(), mysqli_connect_errno());
|
|
}
|
|
|
|
if (isset($config['charset'])) {
|
|
mysqli_query($connection, "SET NAMES '" . $config['charset'] . "'");
|
|
}
|
|
|
|
dibi::notify('connected', $this);
|
|
return $connection;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Internal: Executes the SQL query
|
|
*
|
|
* @param string SQL statement.
|
|
* @return DibiResult|TRUE Result set object
|
|
* @throws DibiDatabaseException
|
|
*/
|
|
protected function doQuery($sql)
|
|
{
|
|
$connection = $this->getConnection();
|
|
$res = @mysqli_query($connection, $sql);
|
|
|
|
if ($errno = mysqli_errno($connection)) {
|
|
throw new DibiDatabaseException(mysqli_error($connection), $errno, $sql);
|
|
}
|
|
|
|
return is_object($res) ? new DibiMySqliResult($res) : TRUE;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Gets the number of affected rows by the last INSERT, UPDATE or DELETE query
|
|
*
|
|
* @return int number of rows or FALSE on error
|
|
*/
|
|
public function affectedRows()
|
|
{
|
|
$rows = mysqli_affected_rows($this->getConnection());
|
|
return $rows < 0 ? FALSE : $rows;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* 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 insertId()
|
|
{
|
|
$id = mysqli_insert_id($this->getConnection());
|
|
return $id < 1 ? FALSE : $id;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Begins a transaction (if supported).
|
|
* @return void
|
|
*/
|
|
public function begin()
|
|
{
|
|
$connection = $this->getConnection();
|
|
if (!mysqli_autocommit($connection, FALSE)) {
|
|
throw new DibiDatabaseException(mysqli_error($connection), mysqli_errno($connection));
|
|
}
|
|
dibi::notify('begin', $this);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Commits statements in a transaction.
|
|
* @return void
|
|
*/
|
|
public function commit()
|
|
{
|
|
$connection = $this->getConnection();
|
|
if (!mysqli_commit($connection)) {
|
|
throw new DibiDatabaseException(mysqli_error($connection), mysqli_errno($connection));
|
|
}
|
|
mysqli_autocommit($connection, TRUE);
|
|
dibi::notify('commit', $this);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Rollback changes in a transaction.
|
|
* @return void
|
|
*/
|
|
public function rollback()
|
|
{
|
|
$connection = $this->getConnection();
|
|
if (!mysqli_rollback($connection)) {
|
|
throw new DibiDatabaseException(mysqli_error($connection), mysqli_errno($connection));
|
|
}
|
|
mysqli_autocommit($connection, TRUE);
|
|
dibi::notify('rollback', $this);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Returns last error
|
|
*
|
|
* @return array with items 'message' and 'code'
|
|
*/
|
|
public function errorInfo()
|
|
{
|
|
$connection = $this->getConnection();
|
|
return array(
|
|
'message' => mysqli_error($connection),
|
|
'code' => mysqli_errno($connection),
|
|
);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Escapes the string
|
|
*
|
|
* @param string unescaped string
|
|
* @param bool quote string?
|
|
* @return string escaped and optionally quoted string
|
|
*/
|
|
public function escape($value, $appendQuotes = TRUE)
|
|
{
|
|
$connection = $this->getConnection();
|
|
return $appendQuotes
|
|
? "'" . mysqli_real_escape_string($connection, $value) . "'"
|
|
: mysqli_real_escape_string($connection, $value);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Delimites identifier (table's or column's name, etc.)
|
|
*
|
|
* @param string identifier
|
|
* @return string delimited identifier
|
|
*/
|
|
public function delimite($value)
|
|
{
|
|
return '`' . str_replace('.', '`.`', $value) . '`';
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Gets a information of the current database.
|
|
*
|
|
* @return DibiMetaData
|
|
*/
|
|
public function getMetaData()
|
|
{
|
|
throw new BadMethodCallException(__METHOD__ . ' is not implemented');
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Injects LIMIT/OFFSET to the SQL query
|
|
*
|
|
* @param string &$sql The SQL query that will be modified.
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return void
|
|
*/
|
|
public function applyLimit(&$sql, $limit, $offset = 0)
|
|
{
|
|
if ($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) $offset : '');
|
|
}
|
|
|
|
|
|
} // class DibiMySqliDriver
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class DibiMySqliResult extends DibiResult
|
|
{
|
|
|
|
/**
|
|
* Returns the number of rows in a result set
|
|
*
|
|
* @return int
|
|
*/
|
|
public function rowCount()
|
|
{
|
|
return mysqli_num_rows($this->resource);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Fetches the row at current position and moves the internal cursor to the next position
|
|
* internal usage only
|
|
*
|
|
* @return array|FALSE array on success, FALSE if no next record
|
|
*/
|
|
protected function doFetch()
|
|
{
|
|
return mysqli_fetch_assoc($this->resource);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Moves cursor position without fetching row
|
|
*
|
|
* @param int the 0-based cursor pos to seek to
|
|
* @return boolean TRUE on success, FALSE if unable to seek to specified record
|
|
*/
|
|
public function seek($row)
|
|
{
|
|
return mysqli_data_seek($this->resource, $row);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Frees the resources allocated for this result set
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function free()
|
|
{
|
|
mysqli_free_result($this->resource);
|
|
}
|
|
|
|
|
|
|
|
/** this is experimental */
|
|
protected function buildMeta()
|
|
{
|
|
static $types = array(
|
|
MYSQLI_TYPE_FLOAT => dibi::FIELD_FLOAT,
|
|
MYSQLI_TYPE_DOUBLE => dibi::FIELD_FLOAT,
|
|
MYSQLI_TYPE_DECIMAL => dibi::FIELD_FLOAT,
|
|
// MYSQLI_TYPE_NEWDECIMAL=> dibi::FIELD_FLOAT,
|
|
// MYSQLI_TYPE_BIT => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_TINY => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_SHORT => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_LONG => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_LONGLONG => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_INT24 => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_YEAR => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_GEOMETRY => dibi::FIELD_INTEGER,
|
|
MYSQLI_TYPE_DATE => dibi::FIELD_DATE,
|
|
MYSQLI_TYPE_NEWDATE => dibi::FIELD_DATE,
|
|
MYSQLI_TYPE_TIMESTAMP => dibi::FIELD_DATETIME,
|
|
MYSQLI_TYPE_TIME => dibi::FIELD_DATETIME,
|
|
MYSQLI_TYPE_DATETIME => dibi::FIELD_DATETIME,
|
|
MYSQLI_TYPE_ENUM => dibi::FIELD_TEXT, // eventually dibi::FIELD_INTEGER
|
|
MYSQLI_TYPE_SET => dibi::FIELD_TEXT, // eventually dibi::FIELD_INTEGER
|
|
MYSQLI_TYPE_STRING => dibi::FIELD_TEXT,
|
|
MYSQLI_TYPE_VAR_STRING=> dibi::FIELD_TEXT,
|
|
MYSQLI_TYPE_TINY_BLOB => dibi::FIELD_BINARY,
|
|
MYSQLI_TYPE_MEDIUM_BLOB=> dibi::FIELD_BINARY,
|
|
MYSQLI_TYPE_LONG_BLOB => dibi::FIELD_BINARY,
|
|
MYSQLI_TYPE_BLOB => dibi::FIELD_BINARY,
|
|
);
|
|
|
|
$count = mysqli_num_fields($this->resource);
|
|
$this->meta = $this->convert = array();
|
|
for ($index = 0; $index < $count; $index++) {
|
|
$info = (array) mysqli_fetch_field_direct($this->resource, $index);
|
|
$native = $info['native'] = $info['type'];
|
|
|
|
if ($info['flags'] & MYSQLI_AUTO_INCREMENT_FLAG) { // or 'primary_key' ?
|
|
$info['type'] = dibi::FIELD_COUNTER;
|
|
} else {
|
|
$info['type'] = isset($types[$native]) ? $types[$native] : dibi::FIELD_UNKNOWN;
|
|
// if ($info['type'] === dibi::FIELD_TEXT && $info['length'] > 255)
|
|
// $info['type'] = dibi::FIELD_LONG_TEXT;
|
|
}
|
|
|
|
$this->meta[$info['name']] = $info;
|
|
$this->convert[$info['name']] = $info['type'];
|
|
}
|
|
}
|
|
|
|
|
|
} // class DibiMySqliResult
|