I tried to do this to fix the changing password problem .

I changed this line
$oldPass = hash("sha256", mysql_real_escape_string($_POST["currentPassword"]));
to
$oldPass = hash("sha256", $oldPass.$salt, mysql_real_escape_string($_POST["currentPassword"]));

But it didn't work.

The update process starts with
if($oldPass == $hashedPass){

I tried to define $hashedPass and fetch the password from the DB to  it .
Still didn't work .

And says
"You must type in the correct current password before you can set a new password. "

Please help