397 lines
9.3 KiB
PHP
397 lines
9.3 KiB
PHP
|
<?php
|
||
|
|
/**
|
||
|
|
* CodeIgniter
|
||
|
|
*
|
||
|
|
* An open source application development framework for PHP
|
||
|
|
*
|
||
|
|
* This content is released under the MIT License (MIT)
|
||
|
|
*
|
||
|
|
* Copyright (c) 2014 - 2015, British Columbia Institute of Technology
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
* of this software and associated documentation files (the "Software"), to deal
|
||
|
|
* in the Software without restriction, including without limitation the rights
|
||
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
* copies of the Software, and to permit persons to whom the Software is
|
||
|
|
* furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included in
|
||
|
|
* all copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||
|
|
* THE SOFTWARE.
|
||
|
|
*
|
||
|
|
* @package CodeIgniter
|
||
|
|
* @author EllisLab Dev Team
|
||
|
|
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
|
||
|
|
* @copyright Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
|
||
|
|
* @license http://opensource.org/licenses/MIT MIT License
|
||
|
|
* @link http://codeigniter.com
|
||
|
|
* @since Version 2.1.0
|
||
|
|
* @filesource
|
||
|
|
*/
|
||
|
|
defined('BASEPATH') OR exit('No direct script access allowed');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* PDO Database Adapter Class
|
||
|
|
*
|
||
|
|
* Note: _DB is an extender class that the app controller
|
||
|
|
* creates dynamically based on whether the query builder
|
||
|
|
* class is being used or not.
|
||
|
|
*
|
||
|
|
* @package CodeIgniter
|
||
|
|
* @subpackage Drivers
|
||
|
|
* @category Database
|
||
|
|
* @author EllisLab Dev Team
|
||
|
|
* @link http://codeigniter.com/user_guide/database/
|
||
|
|
*/
|
||
|
|
class CI_DB_pdo_driver extends CI_DB {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Database driver
|
||
|
|
*
|
||
|
|
* @var string
|
||
|
|
*/
|
||
|
|
public $dbdriver = 'pdo';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* PDO Options
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $options = array();
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Class constructor
|
||
|
|
*
|
||
|
|
* Validates the DSN string and/or detects the subdriver.
|
||
|
|
*
|
||
|
|
* @param array $params
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
public function __construct($params)
|
||
|
|
{
|
||
|
|
parent::__construct($params);
|
||
|
|
|
||
|
|
if (preg_match('/([^:]+):/', $this->dsn, $match) && count($match) === 2)
|
||
|
|
{
|
||
|
|
// If there is a minimum valid dsn string pattern found, we're done
|
||
|
|
// This is for general PDO users, who tend to have a full DSN string.
|
||
|
|
$this->subdriver = $match[1];
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
// Legacy support for DSN specified in the hostname field
|
||
|
|
elseif (preg_match('/([^:]+):/', $this->hostname, $match) && count($match) === 2)
|
||
|
|
{
|
||
|
|
$this->dsn = $this->hostname;
|
||
|
|
$this->hostname = NULL;
|
||
|
|
$this->subdriver = $match[1];
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
elseif (in_array($this->subdriver, array('mssql', 'sybase'), TRUE))
|
||
|
|
{
|
||
|
|
$this->subdriver = 'dblib';
|
||
|
|
}
|
||
|
|
elseif ($this->subdriver === '4D')
|
||
|
|
{
|
||
|
|
$this->subdriver = '4d';
|
||
|
|
}
|
||
|
|
elseif ( ! in_array($this->subdriver, array('4d', 'cubrid', 'dblib', 'firebird', 'ibm', 'informix', 'mysql', 'oci', 'odbc', 'pgsql', 'sqlite', 'sqlsrv'), TRUE))
|
||
|
|
{
|
||
|
|
log_message('error', 'PDO: Invalid or non-existent subdriver');
|
||
|
|
|
||
|
|
if ($this->db_debug)
|
||
|
|
{
|
||
|
|
show_error('Invalid or non-existent PDO subdriver');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->dsn = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Database connection
|
||
|
|
*
|
||
|
|
* @param bool $persistent
|
||
|
|
* @return object
|
||
|
|
*/
|
||
|
|
public function db_connect($persistent = FALSE)
|
||
|
|
{
|
||
|
|
$this->options[PDO::ATTR_PERSISTENT] = $persistent;
|
||
|
|
|
||
|
|
try
|
||
|
|
{
|
||
|
|
return new PDO($this->dsn, $this->username, $this->password, $this->options);
|
||
|
|
}
|
||
|
|
catch (PDOException $e)
|
||
|
|
{
|
||
|
|
if ($this->db_debug && empty($this->failover))
|
||
|
|
{
|
||
|
|
$this->display_error($e->getMessage(), '', TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Database version number
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function version()
|
||
|
|
{
|
||
|
|
if (isset($this->data_cache['version']))
|
||
|
|
{
|
||
|
|
return $this->data_cache['version'];
|
||
|
|
}
|
||
|
|
|
||
|
|
// Not all subdrivers support the getAttribute() method
|
||
|
|
try
|
||
|
|
{
|
||
|
|
return $this->data_cache['version'] = $this->conn_id->getAttribute(PDO::ATTR_SERVER_VERSION);
|
||
|
|
}
|
||
|
|
catch (PDOException $e)
|
||
|
|
{
|
||
|
|
return parent::version();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Execute the query
|
||
|
|
*
|
||
|
|
* @param string $sql SQL query
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
protected function _execute($sql)
|
||
|
|
{
|
||
|
|
return $this->conn_id->query($sql);
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Begin Transaction
|
||
|
|
*
|
||
|
|
* @param bool $test_mode
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function trans_begin($test_mode = FALSE)
|
||
|
|
{
|
||
|
|
// When transactions are nested we only begin/commit/rollback the outermost ones
|
||
|
|
if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
|
||
|
|
{
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Reset the transaction failure flag.
|
||
|
|
// If the $test_mode flag is set to TRUE transactions will be rolled back
|
||
|
|
// even if the queries produce a successful result.
|
||
|
|
$this->_trans_failure = ($test_mode === TRUE);
|
||
|
|
|
||
|
|
return $this->conn_id->beginTransaction();
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Commit Transaction
|
||
|
|
*
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function trans_commit()
|
||
|
|
{
|
||
|
|
// When transactions are nested we only begin/commit/rollback the outermost ones
|
||
|
|
if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
|
||
|
|
{
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->conn_id->commit();
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Rollback Transaction
|
||
|
|
*
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function trans_rollback()
|
||
|
|
{
|
||
|
|
// When transactions are nested we only begin/commit/rollback the outermost ones
|
||
|
|
if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
|
||
|
|
{
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->conn_id->rollBack();
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Platform-dependant string escape
|
||
|
|
*
|
||
|
|
* @param string
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function _escape_str($str)
|
||
|
|
{
|
||
|
|
// Escape the string
|
||
|
|
$str = $this->conn_id->quote($str);
|
||
|
|
|
||
|
|
// If there are duplicated quotes, trim them away
|
||
|
|
return ($str[0] === "'")
|
||
|
|
? substr($str, 1, -1)
|
||
|
|
: $str;
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Affected Rows
|
||
|
|
*
|
||
|
|
* @return int
|
||
|
|
*/
|
||
|
|
public function affected_rows()
|
||
|
|
{
|
||
|
|
return is_object($this->result_id) ? $this->result_id->rowCount() : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Insert ID
|
||
|
|
*
|
||
|
|
* @param string $name
|
||
|
|
* @return int
|
||
|
|
*/
|
||
|
|
public function insert_id($name = NULL)
|
||
|
|
{
|
||
|
|
return $this->conn_id->lastInsertId($name);
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Field data query
|
||
|
|
*
|
||
|
|
* Generates a platform-specific query so that the column data can be retrieved
|
||
|
|
*
|
||
|
|
* @param string $table
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function _field_data($table)
|
||
|
|
{
|
||
|
|
return 'SELECT TOP 1 * FROM '.$this->protect_identifiers($table);
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Error
|
||
|
|
*
|
||
|
|
* Returns an array containing code and message of the last
|
||
|
|
* database error that has occured.
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function error()
|
||
|
|
{
|
||
|
|
$error = array('code' => '00000', 'message' => '');
|
||
|
|
$pdo_error = $this->conn_id->errorInfo();
|
||
|
|
|
||
|
|
if (empty($pdo_error[0]))
|
||
|
|
{
|
||
|
|
return $error;
|
||
|
|
}
|
||
|
|
|
||
|
|
$error['code'] = isset($pdo_error[1]) ? $pdo_error[0].'/'.$pdo_error[1] : $pdo_error[0];
|
||
|
|
if (isset($pdo_error[2]))
|
||
|
|
{
|
||
|
|
$error['message'] = $pdo_error[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
return $error;
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Update_Batch statement
|
||
|
|
*
|
||
|
|
* Generates a platform-specific batch update string from the supplied data
|
||
|
|
*
|
||
|
|
* @param string $table Table name
|
||
|
|
* @param array $values Update data
|
||
|
|
* @param string $index WHERE key
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function _update_batch($table, $values, $index)
|
||
|
|
{
|
||
|
|
$ids = array();
|
||
|
|
foreach ($values as $key => $val)
|
||
|
|
{
|
||
|
|
$ids[] = $val[$index];
|
||
|
|
|
||
|
|
foreach (array_keys($val) as $field)
|
||
|
|
{
|
||
|
|
if ($field !== $index)
|
||
|
|
{
|
||
|
|
$final[$field][] = 'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$cases = '';
|
||
|
|
foreach ($final as $k => $v)
|
||
|
|
{
|
||
|
|
$cases .= $k.' = CASE '."\n";
|
||
|
|
|
||
|
|
foreach ($v as $row)
|
||
|
|
{
|
||
|
|
$cases .= $row."\n";
|
||
|
|
}
|
||
|
|
|
||
|
|
$cases .= 'ELSE '.$k.' END, ';
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->where($index.' IN('.implode(',', $ids).')', NULL, FALSE);
|
||
|
|
|
||
|
|
return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where');
|
||
|
|
}
|
||
|
|
|
||
|
|
// --------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Truncate statement
|
||
|
|
*
|
||
|
|
* Generates a platform-specific truncate string from the supplied data
|
||
|
|
*
|
||
|
|
* If the database does not support the TRUNCATE statement,
|
||
|
|
* then this method maps to 'DELETE FROM table'
|
||
|
|
*
|
||
|
|
* @param string $table
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function _truncate($table)
|
||
|
|
{
|
||
|
|
return 'TRUNCATE TABLE '.$table;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|