php exec() - mysqldump creates an empty file

Question

I want to create a backup from a database, but I get only a blank file.

include(\'config.php\');

$command = \"mysqldump --opt -h \".$_host.\" -u \".$_user.\         


        

Answer 1

Try this one:

$command = 'd:\xampp\mysql\bin\mysqldump --opt -u '.$_user.' -p'.$_pass.' '.$_db.' > test.sql 2>&1';

-its about permission issue.