Question

PHP: Download Entire MySQL Dump

Asked by: hankknight

I want to download a full dump of a MySQL database without the use of bulky applications like PHPMyAdmin.

I want to download the entire database, including structure and content for all tables and fields.

<?php
####################################################################
#  DATABASE SETTINGS
$db_host = "localhost";
$db_user = "myusername";
$db_password = "mypassword";
$db_name = "test_db";
####################################################################
 
$sql = ''; /////////  I want a FULL database dump
 
header("Content-Disposition: attachment; filename=dump.".time().".sql");
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header("Content-Description: File Transfer");             
header("Content-Length: " . strlen($sql));
echo $sql;
exit;
?>

                                  
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Asked On
2009-10-11 at 06:33:01ID24802740
Topic

PHP and Databases

Participating Experts
2
Points
500
Comments
7

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Answers

 

by: AllentkwPosted on 2009-10-11 at 07:00:03ID: 25545923

Hiya!

There is a class written in php to do a database dump.
Take a look into this link: http://www.phpclasses.org/browse/package/3498.html

Check out the code snippet for an example usage with your script.

There are also other ways of using the class, like exporting just the table structure, data only and other modes. Also, it includes of outputting in compressed file.


<?php
@include_once('mysqldump.php');
 
####################################################################
#  DATABASE SETTINGS
$db_host = "localhost";
$db_user = "myusername";
$db_password = "mypassword";
$db_name = "test_db";
####################################################################
 
$filename = 'dump.'.time().'.sql';
 
$connection = @mysql_connect($db_host,$db_user,$db_password);
 
//1st parameter: db name
//2nd parameter: the exported file that will contain the dump
//3rd parameter: create zipped file (true = zipped, false = normal)
//4th parameter: data encode (true = hexadecimal, false = plain text)
$dumper = new MySQLDump($db_name,$filename,false,false);
$dumper->doDump();
 
header("Content-Disposition: attachment; filename=".$filename);
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header("Content-Description: File Transfer");             
header("Content-Length: ".filesize($filename));
echo $sql;
exit;
?>

                                              
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by: AllentkwPosted on 2009-10-11 at 07:01:42ID: 25545926

Minor mistake in the code snippet above.
Forgotten to get rid of the "echo $sql;" which will cause error in execution of the script.

<?php
@include_once('mysqldump.php');
 
####################################################################
#  DATABASE SETTINGS
$db_host = "localhost";
$db_user = "myusername";
$db_password = "mypassword";
$db_name = "test_db";
####################################################################
 
$filename = 'dump.'.time().'.sql';
 
$connection = @mysql_connect($db_host,$db_user,$db_password);
 
//1st parameter: db name
//2nd parameter: the exported file that will contain the dump
//3rd parameter: create zipped file (true = zipped, false = normal)
//4th parameter: data encode (true = hexadecimal, false = plain text)
$dumper = new MySQLDump($db_name,$filename,false,false);
$dumper->doDump();
 
header("Content-Disposition: attachment; filename=".$filename);
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header("Content-Description: File Transfer");             
header("Content-Length: ".filesize($filename));
exit;
?>

                                              
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by: hankknightPosted on 2009-10-11 at 07:31:05ID: 25546028

The server is configured in such a way as Apache cannot write to the filesystem, regardless of permissions.  The class you suggested tries to create a file on the server and so it does not work. That is why I need to put the dump into $sql and then echo $sql.  

 

by: Ray_PaseurPosted on 2009-10-11 at 07:41:43ID: 25546068

Are you saying that you cannot use PHP fopen() function on your own server?  Why not?  I would try to remedy this, if I were you.  Being able to use the file system is part of the PHP core.  It will make life much easier!

I can show you a way that I have used to back up MySQL data, but it would need to write the backup file somewhere.

An alternative architecture might be to use a CRON job to copy the data base.

Best regards, ~Ray

 

by: hankknightPosted on 2009-10-11 at 07:56:10ID: 25546118

Ray, this is not my server and I don't have root access to it.

 

by: Ray_PaseurPosted on 2009-10-11 at 08:22:10ID: 25546195

You don't need root access - I work in several servers with only WWW-level access.  Maybe the server admin could help you.  I could not imagine trying to get anything done without the file system functions.  Surely they would understand.

 

by: hankknightPosted on 2009-10-16 at 13:34:18ID: 25593099

20120131-EE-VQP-002

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