“Fatal error: Cannot redeclare ”

Question

I have a function(this is exactly how it appears, from the top of my file):

Answer 1

you can check first if name of your function isn`t exists or not before you write function By

  if (!function_exists('generate_salt'))
{
    function generate_salt()
    {
    ........
    }
}

OR you can change name of function to another name