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<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* Code Igniter
*
* An open source application development framework for PHP 4.3.2 or newer
*
* @package CodeIgniter
* @author Rick Ellis
* @copyright Copyright (c) 2006, pMachine, Inc.
* @license http://www.codeignitor.com/user_guide/license.html
* @link http://www.codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* MySQL Utility Class
*
* @category Database
* @author Rick Ellis
* @link http://www.codeigniter.com/user_guide/database/
*/
class CI_DB_mysql_utility extends CI_DB_utility {
/**
* Create database
*
* @access private
* @param string the database name
* @return bool
*/
function _create_database($name)
{
return "CREATE DATABASE ".$name;
}
// --------------------------------------------------------------------
/**
* Drop database
*
* @access public
* @param string the database name
* @return bool
*/
function drop_database($name)
{
return $this->db->query("DROP DATABASE ".$name);
}
// --------------------------------------------------------------------
/**
* List databases
*
* @access public
* @return bool
*/
function list_databases()
{
$query = $this->db->query("SHOW DATABASES");
$dbs = array();
if ($query->num_rows() > 0)
{
foreach ($query->result_array() as $row)
{
$dbs[] = current($row);
}
}
return $dbs;
}
// --------------------------------------------------------------------
/**
* Drop Table
*
* @access public
* @return bool
*/
function drop_table($table)
{
return $this->db->query("DROP TABLE IF EXISTS ".$this->db->_escape_table($name));
}
// --------------------------------------------------------------------
/**
* Version number query string
*
* @access public
* @return string
*/
function _version()
{
return "SELECT version() AS ver";
}
// --------------------------------------------------------------------
/**
* Show table query
*
* Generates a platform-specific query string so that the table names can be fetched
*
* @access public
* @return string
*/
function _show_tables()
{
return "SHOW TABLES FROM `".$this->db->database."`";
}
// --------------------------------------------------------------------
/**
* Show columnn query
*
* Generates a platform-specific query string so that the column names can be fetched
*
* @access public
* @param string the table name
* @return string
*/
function _show_columns($table = '')
{
return "SHOW COLUMNS FROM ".$this->db->_escape_table($table);
}
// --------------------------------------------------------------------
/**
* Field data query
*
* Generates a platform-specific query so that the column data can be retrieved
*
* @access public
* @param string the table name
* @return object
*/
function _field_data($table)
{
return "SELECT * FROM ".$this->db->_escape_table($table)." LIMIT 1";
}
}
?>
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