1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014 - 2019, 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. (https://ellislab.com/)
* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
* @license https://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 1.3.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* MySQLi Utility Class
*
* @package CodeIgniter
* @subpackage Drivers
* @category Database
* @author EllisLab Dev Team
* @link https://codeigniter.com/userguide3/database/
*/
class CI_DB_mysqli_utility extends CI_DB_utility {
/**
* List databases statement
*
* @var string
*/
protected $_list_databases = 'SHOW DATABASES';
/**
* OPTIMIZE TABLE statement
*
* @var string
*/
protected $_optimize_table = 'OPTIMIZE TABLE %s';
/**
* REPAIR TABLE statement
*
* @var string
*/
protected $_repair_table = 'REPAIR TABLE %s';
// --------------------------------------------------------------------
/**
* Export
*
* @param array $params Preferences
* @return mixed
*/
protected function _backup($params = array())
{
if (count($params) === 0)
{
return FALSE;
}
// Extract the prefs for simplicity
extract($params);
// Build the output
$output = '';
// Do we need to include a statement to disable foreign key checks?
if ($foreign_key_checks === FALSE)
{
$output .= 'SET foreign_key_checks = 0;'.$newline;
}
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->escape_identifiers($this->db->database.'.'.$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)
{
$output .= 'DROP TABLE IF EXISTS '.$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 = $query->result_id->fetch_field())
{
// Most versions of MySQL store timestamp as a string
$is_int[$i] = in_array($field->type, array(MYSQLI_TYPE_TINY, MYSQLI_TYPE_SHORT, MYSQLI_TYPE_INT24, MYSQLI_TYPE_LONG), TRUE);
// Create a string of field names
$field_str .= $this->db->escape_identifiers($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;
}
// Do we need to include a statement to re-enable foreign key checks?
if ($foreign_key_checks === FALSE)
{
$output .= 'SET foreign_key_checks = 1;'.$newline;
}
return $output;
}
}
|
