Function - backup tables, but download instead of create file

[eevan79]

Here is function that backup mysql database. It's working fine, but I want to download file instead of creating it.

 

 

 

/* backup the db OR just a table */
function backup_tables($host,$user,$pass,$name,$tables = '*')
{

$link = mysql_connect($host,$user,$pass);
mysql_select_db($name,$link);

//get all of the tables
if($tables == '*')
{
	$tables = array();
	$result = mysql_query('SHOW TABLES');
	while($row = mysql_fetch_row($result))
	{
		$tables[] = $row[0];
	}
}
else
{
	$tables = is_array($tables) ? $tables : explode(',',$tables);
}

//cycle through
foreach($tables as $table)
{
	$result = mysql_query('SELECT * FROM '.$table);
	$num_fields = mysql_num_fields($result);

	$return.= 'DROP TABLE '.$table.';';
	$row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE '.$table));
	$return.= "\n\n".$row2[1].";\n\n";

	for ($i = 0; $i < $num_fields; $i++) 
	{
		while($row = mysql_fetch_row($result))
		{
			$return.= 'INSERT INTO '.$table.' VALUES(';
			for($j=0; $j<$num_fields; $j++) 
			{
				$row[$j] = addslashes($row[$j]);
				$row[$j] = str_replace("\n","\\n",$row[$j]);
				if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
				if ($j<($num_fields-1)) { $return.= ','; }
			}
			$return.= ");\n";
		}
	}
	$return.="\n\n\n";
}

//save file
$date= date("d-M-Y_h-i");
$handle = fopen('Backup-'.$date.'.sql','w+');
fwrite($handle,$return);
fclose($handle);
}

 

 

Usage:

backup_tables('HOST','USER','PASS','TABLE');

But this will create backup file on server.

 

 

I also tried to add following code in function (at the end):

echo $return;
header('Content-type: text/plain');
header("Content-Disposition: attachment; filename=\"$filename\"");

 

 

How to just download file, without showing it on screen instead of using fwrite/fclose function?

[topcat]

You will still have to create the file on the server filesystem before you can download it (as far as I am aware). After you create the file you can then set the headers and download it with the following:

 

$filename = 'whatever you called the file';

header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($filename));
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($filename));
ob_clean();
flush();
readfile($filename);
unlink($filename);
exit;

 

That will then delete the file after it has completed the download.