/system/database/drivers/mysql/mysql_utility.php
PHP | 245 lines | 110 code | 36 blank | 99 comment | 16 complexity | 280cbeb5acc424988a1520eb7c687ab3 MD5 | raw file
Possible License(s): Apache-2.0
- <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
- /**
- * CodeIgniter
- *
- * An open source application development framework for PHP 4.3.2 or newer
- *
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2008 - 2010, EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 1.0
- * @filesource
- */
- // ------------------------------------------------------------------------
- /**
- * MySQL Utility Class
- *
- * @category Database
- * @author ExpressionEngine Dev Team
- * @link http://codeigniter.com/user_guide/database/
- */
- class CI_DB_mysql_utility extends CI_DB_utility {
- /**
- * List databases
- *
- * @access private
- * @return bool
- */
- function _list_databases()
- {
- return "SHOW DATABASES";
- }
- // --------------------------------------------------------------------
- /**
- * Optimize table query
- *
- * Generates a platform-specific query so that a table can be optimized
- *
- * @access private
- * @param string the table name
- * @return object
- */
- function _optimize_table($table)
- {
- return "OPTIMIZE TABLE ".$this->db->_escape_identifiers($table);
- }
- // --------------------------------------------------------------------
- /**
- * Repair table query
- *
- * Generates a platform-specific query so that a table can be repaired
- *
- * @access private
- * @param string the table name
- * @return object
- */
- function _repair_table($table)
- {
- return "REPAIR TABLE ".$this->db->_escape_identifiers($table);
- }
- // --------------------------------------------------------------------
- /**
- * MySQL Export
- *
- * @access private
- * @param array Preferences
- * @return mixed
- */
- 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)
- ) ? TRUE : FALSE;
-
- // 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)
- {
- $val_str .= 'NULL';
- }
- else
- {
- // Escape the data if it's not an integer
- if ($is_int[$i] == FALSE)
- {
- $val_str .= $this->db->escape($v);
- }
- else
- {
- $val_str .= $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;
- }
-
- $output .= $newline.$newline;
- }
- return $output;
- }
- /**
- *
- * The functions below have been deprecated as of 1.6, and are only here for backwards
- * compatibility. They now reside in dbforge(). The use of dbutils for database manipulation
- * is STRONGLY discouraged in favour if using dbforge.
- *
- */
- /**
- * Create database
- *
- * @access private
- * @param string the database name
- * @return bool
- */
- function _create_database($name)
- {
- return "CREATE DATABASE ".$name;
- }
- // --------------------------------------------------------------------
- /**
- * Drop database
- *
- * @access private
- * @param string the database name
- * @return bool
- */
- function _drop_database($name)
- {
- return "DROP DATABASE ".$name;
- }
- }
- /* End of file mysql_utility.php */
- /* Location: ./system/database/drivers/mysql/mysql_utility.php */