Current File : /www/old2/_music/diplomka/diplomka/src/API/libs/dibi/drivers/mysql.php
<?php
/**
* This file is part of the "dibi" - smart database abstraction layer.
*
* Copyright (c) 2005 David Grudl (http://davidgrudl.com)
*
* For the full copyright and license information, please view
* the file license.txt that was distributed with this source code.
*/
require_once dirname(__FILE__) . '/mysql.reflector.php';
/**
* The dibi driver for MySQL database.
*
* Driver options:
* - host => the MySQL server host name
* - port (int) => the port number to attempt to connect to the MySQL server
* - socket => the socket or named pipe
* - username (or user)
* - password (or pass)
* - database => the database name to select
* - flags (int) => driver specific constants (MYSQL_CLIENT_*)
* - charset => character encoding to set (default is utf8)
* - persistent (bool) => try to find a persistent link?
* - unbuffered (bool) => sends query without fetching and buffering the result rows automatically?
* - sqlmode => see http://dev.mysql.com/doc/refman/5.0/en/server-sql-mode.html
* - resource (resource) => existing connection resource
* - lazy, profiler, result, substitutes, ... => see DibiConnection options
*
* @author David Grudl
* @package dibi\drivers
*/
class DibiMySqlDriver extends DibiObject implements IDibiDriver, IDibiResultDriver
{
const ERROR_ACCESS_DENIED = 1045;
const ERROR_DUPLICATE_ENTRY = 1062;
const ERROR_DATA_TRUNCATED = 1265;
/** @var resource Connection resource */
private $connection;
/** @var resource Resultset resource */
private $resultSet;
/** @var bool */
private $autoFree = TRUE;
/** @var bool Is buffered (seekable and countable)? */
private $buffered;
/**
* @throws DibiNotSupportedException
*/
public function __construct()
{
if (!extension_loaded('mysql')) {
throw new DibiNotSupportedException("PHP extension 'mysql' is not loaded.");
}
}
/**
* Connects to a database.
* @return void
* @throws DibiException
*/
public function connect(array &$config)
{
if (isset($config['resource'])) {
$this->connection = $config['resource'];
} else {
// default values
DibiConnection::alias($config, 'flags', 'options');
if (!isset($config['charset'])) $config['charset'] = 'utf8';
if (!isset($config['username'])) $config['username'] = ini_get('mysql.default_user');
if (!isset($config['password'])) $config['password'] = ini_get('mysql.default_password');
if (!isset($config['host'])) {
$host = ini_get('mysql.default_host');
if ($host) {
$config['host'] = $host;
$config['port'] = ini_get('mysql.default_port');
} else {
if (!isset($config['socket'])) $config['socket'] = ini_get('mysql.default_socket');
$config['host'] = NULL;
}
}
if (empty($config['socket'])) {
$host = $config['host'] . (empty($config['port']) ? '' : ':' . $config['port']);
} else {
$host = ':' . $config['socket'];
}
if (empty($config['persistent'])) {
$this->connection = @mysql_connect($host, $config['username'], $config['password'], TRUE, $config['flags']); // intentionally @
} else {
$this->connection = @mysql_pconnect($host, $config['username'], $config['password'], $config['flags']); // intentionally @
}
}
if (!is_resource($this->connection)) {
throw new DibiDriverException(mysql_error(), mysql_errno());
}
if (isset($config['charset'])) {
$ok = FALSE;
if (function_exists('mysql_set_charset')) {
// affects the character set used by mysql_real_escape_string() (was added in MySQL 5.0.7 and PHP 5.2.3)
$ok = @mysql_set_charset($config['charset'], $this->connection); // intentionally @
}
if (!$ok) {
$this->query("SET NAMES '$config[charset]'");
}
}
if (isset($config['database'])) {
if (!@mysql_select_db($config['database'], $this->connection)) { // intentionally @
throw new DibiDriverException(mysql_error($this->connection), mysql_errno($this->connection));
}
}
if (isset($config['sqlmode'])) {
$this->query("SET sql_mode='$config[sqlmode]'");
}
$this->query("SET time_zone='" . date('P') . "'");
$this->buffered = empty($config['unbuffered']);
}
/**
* Disconnects from a database.
* @return void
*/
public function disconnect()
{
mysql_close($this->connection);
}
/**
* Executes the SQL query.
* @param string SQL statement.
* @return IDibiResultDriver|NULL
* @throws DibiDriverException
*/
public function query($sql)
{
if ($this->buffered) {
$res = @mysql_query($sql, $this->connection); // intentionally @
} else {
$res = @mysql_unbuffered_query($sql, $this->connection); // intentionally @
}
if (mysql_errno($this->connection)) {
throw new DibiDriverException(mysql_error($this->connection), mysql_errno($this->connection), $sql);
} elseif (is_resource($res)) {
return $this->createResultDriver($res);
}
}
/**
* Retrieves information about the most recently executed query.
* @return array
*/
public function getInfo()
{
$res = array();
preg_match_all('#(.+?): +(\d+) *#', mysql_info($this->connection), $matches, PREG_SET_ORDER);
if (preg_last_error()) throw new DibiPcreException;
foreach ($matches as $m) {
$res[$m[1]] = (int) $m[2];
}
return $res;
}
/**
* Gets the number of affected rows by the last INSERT, UPDATE or DELETE query.
* @return int|FALSE number of rows or FALSE on error
*/
public function getAffectedRows()
{
return mysql_affected_rows($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($sequence)
{
return mysql_insert_id($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 $savepoint" : 'ROLLBACK');
}
/**
* Returns the connection resource.
* @return mixed
*/
public function getResource()
{
return is_resource($this->connection) ? $this->connection : NULL;
}
/**
* Returns the connection reflector.
* @return IDibiReflector
*/
public function getReflector()
{
return new DibiMySqlReflector($this);
}
/**
* Result set driver factory.
* @param resource
* @return IDibiResultDriver
*/
public function createResultDriver($resource)
{
$res = clone $this;
$res->resultSet = $resource;
return $res;
}
/********************* SQL ****************d*g**/
/**
* Encodes data for use in a SQL statement.
* @param mixed value
* @param string type (dibi::TEXT, dibi::BOOL, ...)
* @return string encoded value
* @throws InvalidArgumentException
*/
public function escape($value, $type)
{
switch ($type) {
case dibi::TEXT:
if (!is_resource($this->connection)) {
throw new DibiException('Lost connection to server.');
}
return "'" . mysql_real_escape_string($value, $this->connection) . "'";
case dibi::BINARY:
if (!is_resource($this->connection)) {
throw new DibiException('Lost connection to server.');
}
return "_binary'" . mysql_real_escape_string($value, $this->connection) . "'";
case dibi::IDENTIFIER:
// @see http://dev.mysql.com/doc/refman/5.0/en/identifiers.html
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'", $value);
default:
throw new InvalidArgumentException('Unsupported type.');
}
}
/**
* Encodes string for use in a LIKE statement.
* @param string
* @param int
* @return string
*/
public function escapeLike($value, $pos)
{
$value = addcslashes(str_replace('\\', '\\\\', $value), "\x00\n\r\\'%_");
return ($pos <= 0 ? "'%" : "'") . $value . ($pos >= 0 ? "%'" : "'");
}
/**
* 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**/
/**
* Automatically frees the resources allocated for this result set.
* @return void
*/
public function __destruct()
{
$this->autoFree && $this->getResultResource() && $this->free();
}
/**
* Returns the number of rows in a result set.
* @return int
*/
public function getRowCount()
{
if (!$this->buffered) {
throw new DibiNotSupportedException('Row count is not available for unbuffered queries.');
}
return mysql_num_rows($this->resultSet);
}
/**
* Fetches the row at current position and moves the internal cursor to the next position.
* @param bool TRUE for associative array, FALSE for numeric
* @return array array on success, nonarray if no next record
*/
public function fetch($assoc)
{
return mysql_fetch_array($this->resultSet, $assoc ? MYSQL_ASSOC : MYSQL_NUM);
}
/**
* Moves cursor position without fetching row.
* @param int the 0-based cursor pos to seek to
* @return boolean TRUE on success, FALSE if unable to seek to specified record
* @throws DibiException
*/
public function seek($row)
{
if (!$this->buffered) {
throw new DibiNotSupportedException('Cannot seek an unbuffered result set.');
}
return mysql_data_seek($this->resultSet, $row);
}
/**
* Frees the resources allocated for this result set.
* @return void
*/
public function free()
{
mysql_free_result($this->resultSet);
$this->resultSet = NULL;
}
/**
* Returns metadata for all columns in a result set.
* @return array
*/
public function getResultColumns()
{
$count = mysql_num_fields($this->resultSet);
$columns = array();
for ($i = 0; $i < $count; $i++) {
$row = (array) mysql_fetch_field($this->resultSet, $i);
$columns[] = array(
'name' => $row['name'],
'table' => $row['table'],
'fullname' => $row['table'] ? $row['table'] . '.' . $row['name'] : $row['name'],
'nativetype' => strtoupper($row['type']),
'vendor' => $row,
);
}
return $columns;
}
/**
* Returns the result set resource.
* @return mixed
*/
public function getResultResource()
{
$this->autoFree = FALSE;
return is_resource($this->resultSet) ? $this->resultSet : NULL;
}
}
Mini Shell