BaksqlAction.class.php
17.2 KB
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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
<?php
class BaksqlAction extends CommonAction {
public $config = ''; //相关配置
public $model = ''; //实例化一个model
public $content; //内容
public $dbName = ''; //数据库名
public $dir_sep = '/'; //路径符号
function _initialize() {
parent::_initialize();
header("Content-type: text/html;charset=utf-8");
set_time_limit(0); //不超时
ini_set('memory_limit','500M');
$this->config = array(
'path' => DB_BACKUP, //备份文件存在哪里
'isCompress' => 1, //是否开启gzip压缩 【未测试】
'isDownload' => 0 //备份完成后是否下载文件 【未测试】
);
$this->dbName = C('DB_NAME'); //当前数据库名称
$this->model = new Model();
//$sql = 'set interactive_timeout=24*3600'; //空闲多少秒后 断开链接
// $this->model>execute($sql);
}
/* -
* +------------------------------------------------------------------------
* * @ 已备份数据列表
* +------------------------------------------------------------------------
*/
public function index(){
$path = $this->config['path'];
$fileArr = $this->MyScandir($path);
foreach ($fileArr as $key => $value) {
if ($key > 1) {
//获取文件创建时间
$fileTime = date('Y-m-d H:i:s', filemtime($path . '/' . $value));
$fileSize = filesize($path . '/' . $value) / 1024;
//获取文件大小
$fileSize = $fileSize < 1024 ? number_format($fileSize, 2) . ' KB' :
number_format($fileSize / 1024, 2) . ' MB';
//构建列表数组
$list[] = array(
'name' => $value,
'time' => $fileTime,
'size' => $fileSize
);
}
}
//dump($list);
$list=array_reverse($list);
$this->assign('list', $list);
$this->display();
}
/* -
* +------------------------------------------------------------------------
* * @ 获取数据表
* +------------------------------------------------------------------------
*/
public function tablist() {
$list = $this->model->query("SHOW TABLE STATUS FROM {$this->dbName}"); //得到表的信息
//echo $this->model->getLastSql();
$this->assign('list', $list);
//dump($list);
$this->display();
}
/* -
* +------------------------------------------------------------------------
* * @ 备份整个数据库
* +------------------------------------------------------------------------
*/
function backall() {
$tables = $this->getTables();
if ($this->backup($tables)) {
$this->success('数据库备份成功！',U('Baksql/index'));
} else {
$this->error('数据库备份失败！');
}
}
/* -
* +------------------------------------------------------------------------
* * @ 按表备份，可批量
* +------------------------------------------------------------------------
*/
function backtables() {
$tab = $_REQUEST['tab'];
if (is_array($tab))
$tables = $tab;
else
$tables[] = $tab;
if ($this->backup($tables)) {
if (is_array($tab))
$this->success('数据库备份成功！');
else
$this->success('数据库备份成功！',U('Baksql/index'));
} else {
$this->error('数据库备份失败！');
}
}
public function form(){
if($this->isPost()){
foreach($_POST['name'] as $k=>$v){
$aa=unlink($this->config['path'] . $this->dir_sep . $v);
if(!$aa){
$this->error('删除备份部分失败！');
}
}
$this->success('删除备份成功！',U('Baksql/index'));
}
}
//还原数据库
function recover() {
if ($this->recover_file(I('file'))) {
$this->success('数据还原成功！',U('Baksql/index'));
} else {
$this->error('数据还原失败！');
}
}
//删除单个数据备份
function deletebak() {
if (unlink($this->config['path'] . $this->dir_sep . I('file'))) {
$this->success('删除备份成功！',U('Baksql/index'));
} else {
$this->error('删除备份失败！');
}
}
/* -
* +------------------------------------------------------------------------
* * @ 下载备份文件
* +------------------------------------------------------------------------
*/
function downloadBak() {
$file_name = $_GET['file'];
$file_dir = $this->config['path'];
if (!file_exists($file_dir . "/" . $file_name)) { //检查文件是否存在
return false;
exit;
} else {
$file = fopen($file_dir . "/" . $file_name, "r"); // 打开文件
// 输入文件标签
header('Content-Encoding: none');
header("Content-type: application/octet-stream");
header("Accept-Ranges: bytes");
header("Accept-Length: " . filesize($file_dir . "/" . $file_name));
header('Content-Transfer-Encoding: binary');
header("Content-Disposition: attachment; filename=" . $file_name); //以真实文件名提供给浏览器下载
header('Pragma: no-cache');
header('Expires: 0');
//输出文件内容
echo fread($file, filesize($file_dir . "/" . $file_name));
fclose($file);
exit;
}
}
/* -
* +------------------------------------------------------------------------
* * @ 获取 目录下文件数组
* +------------------------------------------------------------------------
* * @ $FilePath 目录路径
* * @ $Order 排序
* +------------------------------------------------------------------------
* * @ 获取指定目录下的文件列表，返回数组
* +------------------------------------------------------------------------
*/
private function MyScandir($FilePath = './', $Order = 0) {
$FilePath = opendir($FilePath);
while ($filename = readdir($FilePath)) {
$fileArr[] = $filename;
}
$Order == 0 ? sort($fileArr) : rsort($fileArr);
return $fileArr;
}
/* * ******************************************************************************************** */
/* -
* +------------------------------------------------------------------------
* * @ 读取备份文件
* +------------------------------------------------------------------------
* * @ $fileName 文件名
* +------------------------------------------------------------------------
*/
private function getFile($fileName) {
$this->content = '';
$fileName = $this->trimPath($this->config['path'] . $this->dir_sep . $fileName);
if (is_file($fileName)) {
$ext = strrchr($fileName, '.');
if ($ext == '.sql') {
$this->content = file_get_contents($fileName);
} elseif ($ext == '.gz') {
$this->content = implode('', gzfile($fileName));
} else {
$this->error('无法识别的文件格式!');
}
} else {
$this->error('文件不存在!');
}
}
/* -
* +------------------------------------------------------------------------
* * @ 把数据写入磁盘
* +------------------------------------------------------------------------
*/
private function setFile() {
$recognize = '';
$recognize = $this->dbName;
$fileName = $this->trimPath($this->config['path'] . $this->dir_sep . $recognize . '_' . date('YmdHis') . '_' . mt_rand(100000000, 999999999) . '.sql');
$path = $this->setPath($fileName);
if ($path !== true) {
$this->error("无法创建备份目录目录 '$path'");
}
if ($this->config['isCompress'] == 0) {
if (!file_put_contents($fileName, $this->content, LOCK_EX)) {
$this->error('写入文件失败,请检查磁盘空间或者权限!');
}
} else {
if (function_exists('gzwrite')) {
$fileName .= '.gz';
if ($gz = gzopen($fileName, 'wb')) {
gzwrite($gz, $this->content);
gzclose($gz);
} else {
$this->error('写入文件失败,请检查磁盘空间或者权限!');
}
} else {
$this->error('没有开启gzip扩展!');
}
}
if ($this->config['isDownload']) {
$this->downloadFile($fileName);
}
}
private function trimPath($path) {
return str_replace(array('/', '\\', '//', '\\\\'), $this->dir_sep, $path);
}
private function setPath($fileName) {
$dirs = explode($this->dir_sep, dirname($fileName));
$tmp = '';
foreach ($dirs as $dir) {
$tmp .= $dir . $this->dir_sep;
if (!file_exists($tmp) && !@mkdir($tmp, 0777))
return $tmp;
}
return true;
}
//未测试
private function downloadFile($fileName) {
ob_end_clean();
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Length: ' . filesize($fileName));
header('Content-Disposition: attachment; filename=' . basename($fileName));
readfile($fileName);
}
/* -
* +------------------------------------------------------------------------
* * @ 给字符串添加 ` `
* +------------------------------------------------------------------------
* * @ $str 字符串
* +------------------------------------------------------------------------
* * @ 返回 `$str`
* +------------------------------------------------------------------------
*/
private function backquote($str) {
return "`{$str}`";
}
/* -
* +------------------------------------------------------------------------
* * @ 获取数据库的所有表
* +------------------------------------------------------------------------
* * @ $dbName 数据库名称
* +------------------------------------------------------------------------
*/
private function getTables($dbName = '') {
$dbName = C('DB_NAME');
if (!empty($dbName)) {
$sql = 'SHOW TABLES FROM ' . $dbName;
} else {
$sql = 'SHOW TABLES ';
}
$result = $this->model->query($sql);
$info = array();
foreach ($result as $key => $val) {
$info[$key] = current($val);
}
return $info;
}
/* -
* +------------------------------------------------------------------------
* * @ 把传过来的数据 按指定长度分割成数组
* +------------------------------------------------------------------------
* * @ $array 要分割的数据
* * @ $byte 要分割的长度
* +------------------------------------------------------------------------
* * @ 把数组按指定长度分割,并返回分割后的数组
* +------------------------------------------------------------------------
*/
private function chunkArrayByByte($array, $byte = 5120) {
$i = 0;
$sum = 0;
$return = array();
foreach ($array as $v) {
$sum += strlen($v);
if ($sum < $byte) {
$return[$i][] = $v;
} elseif ($sum == $byte) {
$return[++$i][] = $v;
$sum = 0;
} else {
$return[++$i][] = $v;
$i++;
$sum = 0;
}
}
return $return;
}
/* -
* +------------------------------------------------------------------------
* * @ 备份数据 { 备份每张表、视图及数据 }
* +------------------------------------------------------------------------
* * @ $tables 需要备份的表数组
* +------------------------------------------------------------------------
*/
private function backup($tables) {
if (empty($tables))
$this->error('没有需要备份的数据表!');
$this->content = '/* This file is created by MySQLReback ' . date('Y-m-d H:i:s') . ' */';
foreach ($tables as $i => $table) {
$table = $this->backquote($table); //为表名增加 ``
$tableRs = $this->model->query("SHOW CREATE TABLE {$table}"); //获取当前表的创建语句
if (!empty($tableRs[0]["Create View"])) {
$this->content .= "\r\n /* 创建视图结构 {$table} */";
$this->content .= "\r\n DROP VIEW IF EXISTS {$table};/* MySQLReback Separation */ " . $tableRs[0]["Create View"] . ";/* MySQLReback Separation */";
}
if (!empty($tableRs[0]["Create Table"])) {
$this->content .= "\r\n /* 创建表结构 {$table} */";
$this->content .= "\r\n DROP TABLE IF EXISTS {$table};/* MySQLReback Separation */ " . $tableRs[0]["Create Table"] . ";/* MySQLReback Separation */";
$tableDateRow = $this->model->query("SELECT * FROM {$table}");
$valuesArr = array();
$values = '';
if (false != $tableDateRow) {
foreach ($tableDateRow as &$y) {
foreach ($y as &$v) {
if ($v=='') //纠正empty 为0的时候 返回tree
$v = 'null'; //为空设为null
else
$v = "'" . mysql_escape_string($v) . "'"; //非空 加转意符
}
$valuesArr[] = '(' . implode(',', $y) . ')';
}
}
$temp = $this->chunkArrayByByte($valuesArr);
if (is_array($temp)) {
foreach ($temp as $v) {
$values = implode(',', $v) . ';/* MySQLReback Separation */';
if ($values != ';/* MySQLReback Separation */') {
$this->content .= "\r\n /* 插入数据 {$table} */";
$this->content .= "\r\n INSERT INTO {$table} VALUES {$values}";
}
}
}
// dump($this->content);
// exit;
}
}
if (!empty($this->content)) {
$this->setFile();
}
return true;
}
/* -
* +------------------------------------------------------------------------
* * @ 还原数据
* +------------------------------------------------------------------------
* * @ $fileName 文件名
* +------------------------------------------------------------------------
*/
private function recover_file($fileName) {
$this->getFile($fileName);
if (!empty($this->content)) {
$content = explode(';/* MySQLReback Separation */', $this->content);
foreach ($content as $i => $sql) {
$sql = trim($sql);
if (!empty($sql)) {
$mes = $this->model->execute($sql);
if (false === $mes) { //如果 null 写入失败，换成 ''
$table_change = array('null' => '\'\'');
$sql = strtr($sql, $table_change);
$mes = $this->model->execute($sql);
}
if (false === $mes) { //如果遇到错误、记录错误
$log_text = '以下代码还原遇到问题:';
$log_text.="\r\n $sql";
set_log($log_text);
}
}
}
} else {
$this->error('无法读取备份文件!');
}
return true;
}
}
?>