<?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->_escape_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 '.$this->db->_escape_identifiers($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->database.'`.`'.$table.'`'); // No result means the table name was invalid if ($query === FALSE) { continue; } // Write out the table schema $output .= '#'.$newline.'# TABLE STRUCTURE FOR: '.$table.$newline.'#'.$newline.$newline; if ($add_drop == TRUE) { $output .= 'DROP TABLE IF EXISTS '.$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 = $this->db->query('SELECT * FROM '.$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 $field_str .= '`'.$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 $output .= 'INSERT INTO '.$table.' ('.$field_str.') VALUES ('.$val_str.');'.$newline; } return $output.$newline.$newline; } return $output; } } /* End of file mysql_utility.php */ /* Location: ./system/database/drivers/mysql/mysql_utility.php */