i am downloading files from server using WinSCP.Is it possible to write a query to download a large database using mysql query? Or using any other method i have tried with this code but i am not able to get the whole database structure
<?php
if(file_exists('backup_sql/my_backup.zip'))
{
unlink('backup_sql/my_backup.zip');
}
$tables='*';
$host='MY HOST NAME';
$user='MY_USERNAME';
$pass='MYPASSWORD';
$name='MY_DB_NAME';
$link = mysql_connect($host,$user,$pass);
mysql_select_db($name,$link);
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);
}
$return='';
foreach($tables as $table)
{
$result = mysql_query('SELECT * FROM '.$table);
$num_fields = mysql_num_fields($result);
$row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE '.$table));
$return.= "
".$row2[1].";
";
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]);
if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
if ($j<($num_fields-1)) { $return.= ','; }
}
$return.= ");
";
}
}
$return.="
";
}
$rand_var=time();
$files_to_zip = array(
"'backup_sql/db-backup-'.$rand_var.'.sql'",
);
$name = 'db-backup-'.$rand_var.'.sql';
$data = $return;
?>
any one please help me... thank you
No, Timeout will occur. There is default limit of time for which a script can execute.
That is defined under max_execution_time PHP ini settings. you can increase it's value and try.
Just use set_time_limit(0) in the beginnig of your code.
if you are using SCP, you are apparently have a shell access to the server.
in this case I see no point in using any web-based tools to backup the database
just run mysqldump/mysql to dump/restore
that's all
PHP scripts cannot run indefinitely, that is : after a pre-specified amount of time (as defined in the php.ini file), usually 60 seconds, the script will terminate and a Timeout error will be thrown.
The ways to go are :
set_time_limit(0) at the beginning of your script to override the settings in your php.ini files, and have the script run indefinitely (quite an overkill, if you ask me)php.ini file and the max_execution_time variable (quite an overkill, as well)mysqldump command, via SSH (Secure SHell connection). :-)