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用php实现备份数据库ZIP及导出

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Release: 2016-06-13 10:48:39
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经常在有的PHP开源系统中,看到有备份数据库并导出的方法,其实代码不复杂,下面
大概讲解下,以WINDOWS为例子,两类方法,一个是目录文件夹要有执行脚本权限的,
一个个是没有权限的,代码如下:

一)
  
Java代码    
1.  2.     
3. $username = "root";    
4. $password = "";    
5. $hostname = "localhost";    
6. $dbname   = "test";   
7.     
8.  
9. $dumpfname = $dbname . "_" . date("Y-m-d_H-i-s").".sql";   
10. $command = "C:\\xampp\\mysql\\bin\\mysqldump --add-drop-table --host=$hostname   
11.     --user=$username ";   
12. if ($password)    
13.         $command.= "--password=". $password ." ";    
14. $command.= $dbname;   
15. $command.= " > " . $dumpfname;   
16. system($command);   
17.     
18. // zip 数据文件  
19. $zipfname = $dbname . "_" . date("Y-m-d_H-i-s").".zip";   
20. $zip = new ZipArchive();   
21. if($zip->open($zipfname,ZIPARCHIVE::CREATE))    
22. {   
23.    $zip->addFile($dumpfname,$dumpfname);   
24.    $zip->close();   
25. }   
26.     
27. // read zip file and send it to standard output   
28. if (file_exists($zipfname)) {   
29.     header('Content-Description: File Transfer');   
30.     header('Content-Type: application/octet-stream');   
31.     header('Content-Disposition: attachment; filename='.basename($zipfname));   
32.     flush();   
33.     readfile($zipfname);   
34.     exit;   
35. }   
36. ?>  


方法2 文件夹没相关权限
Java代码    
1.  2. ob_start();   
3.     
4. $username = "root";    
5. $password = "";    
6. $hostname = "localhost";    
7. $dbname   = "test";   
8.     
9. $command = "C:\\xampp\\mysql\\bin\\mysqldump --add-drop-table --host=$hostname   
10.     --user=$username ";   
11. if ($password)    
12.         $command.= "--password=". $password ." ";    
13. $command.= $dbname;   
14. system($command);   
15.     
16. $dump = ob_get_contents();    
17. ob_end_clean();   
18.     
19.  
20. //不ZIP了  
21. header('Content-Description: File Transfer');   
22. header('Content-Type: application/octet-stream');   
23. header('Content-Disposition: attachment; filename='.basename($dbname . "_" .    
24.     date("Y-m-d_H-i-s").".sql"));   
25. flush();   
26. echo $dump;   
27. exit();]]>   
28. ?> 

 

摘自 jackyrong
source:php.cn
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