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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* NOTICE OF LICENSE
*
* Licensed under the Open Software License version 3.0
*
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
* http://opensource.org/licenses/OSL-3.0
* If you did not receive a copy of the license and are unable to obtain it
* through the world wide web, please send an email to
* licensing@ellislab.com so we can send you a copy immediately.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
/**
* MySQL Utility Class
*
* @category Database
* @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/database/
*/
class CI_DB_mysql_utility extends CI_DB_utility {
/**
* List databases
*
* @return string
*/
public function _list_databases()
{
return 'SHOW DATABASES';
}
// --------------------------------------------------------------------
/**
* Optimize table query
*
* Generates a platform-specific query so that a table can be optimized
*
* @param string the table name
* @return string
*/
public function _optimize_table($table)
{
return 'OPTIMIZE TABLE '.$this->db->protect_identifiers($table);
}
// --------------------------------------------------------------------
/**
* Repair table query
*
* Generates a platform-specific query so that a table can be repaired
*
* @param string the table name
* @return string
*/
public function _repair_table($table)
{
return 'REPAIR TABLE '.$this->db->protect_identifiers($table);
}
// --------------------------------------------------------------------
/**
* MySQL Export
*
* @param array Preferences
* @return mixed
*/
public function _backup($params = array())
{
if (count($params) === 0)
{
return FALSE;
}
// Extract the prefs for simplicity
extract($params);
// Build the output
$output = '';
foreach ( (array) $tables as $table)
{
// Is the table in the "ignore" list?
if (in_array($table, (array) $ignore, TRUE))
{
continue;
}
// Get the table schema
$query = $this->db->query('SHOW CREATE TABLE '.$this->db->protect_identifiers($this->db->database).'.'.$this->db->protect_identifiers($table));
// No result means the table name was invalid
if ($query === FALSE)
{
continue;
}
// Write out the table schema
$output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline;
if ($add_drop == TRUE)
{
$output .= 'DROP TABLE IF EXISTS '.($this->db->protect_identifiers($table).';'.$newline.$newline;
}
$i = 0;
$result = $query->result_array();
foreach ($result[0] as $val)
{
if ($i++ % 2)
{
$output .= $val.';'.$newline.$newline;
}
}
// If inserts are not needed we're done...
if ($add_insert == FALSE)
{
continue;
}
// Grab all the data from the current table
$query = $this->db->query('SELECT * FROM '.$this->db->protect_identifiers($table));
if ($query->num_rows() == 0)
{
continue;
}
// Fetch the field names and determine if the field is an
// integer type. We use this info to decide whether to
// surround the data with quotes or not
$i = 0;
$field_str = '';
$is_int = array();
while ($field = mysql_fetch_field($query->result_id))
{
// Most versions of MySQL store timestamp as a string
$is_int[$i] = in_array(strtolower(mysql_field_type($query->result_id, $i)),
array('tinyint', 'smallint', 'mediumint', 'int', 'bigint'), //, 'timestamp'),
TRUE);
// Create a string of field names
$field_str .= $this->db->protect_identifiers($field->name).', ';
$i++;
}
// Trim off the end comma
$field_str = preg_replace('/, $/' , '', $field_str);
// Build the insert string
foreach ($query->result_array() as $row)
{
$val_str = '';
$i = 0;
foreach ($row as $v)
{
// Is the value NULL?
if ($v === NULL)
{
$val_str .= 'NULL';
}
else
{
// Escape the data if it's not an integer
$val_str .= ($is_int[$i] == FALSE) ? $this->db->escape($v) : $v;
}
// Append a comma
$val_str .= ', ';
$i++;
}
// Remove the comma at the end of the string
$val_str = preg_replace('/, $/' , '', $val_str);
// Build the INSERT string
$output .= 'INSERT INTO '.$this->db->protect_identifiers($table).' ('.$field_str.') VALUES ('.$val_str.');'.$newline;
}
$output .= $newline.$newline;
}
return $output;
}
}
/* End of file mysql_utility.php */
/* Location: ./system/database/drivers/mysql/mysql_utility.php */
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