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

You should remove the space between the -p and the password.

--opt isn't needed with recent versions of mysql.

Other than that, your syntax is correct so if it doesn't work with the -p fix, you should check the parameters and the produced command.