通过if语句在脚本中运行PHP外部文件

I want to run an external script, within the current script (for tidyness purposes) based on a series of if and else if statements.

Essentialyl what I want do is this...

if ($business_type == "Restaurant"); {require 'scripts/php/insert.php'}

else if ($business_type == "Hotel"); {require 'scripts/php/insert-hotel.php'}

Is this i the right way to call this external script?

That is the proper way of calling the scripts, but your syntax is just a little off :)

if ($business_type == "Restaurant"){
    require 'scripts/php/insert.php';
}
else if ($business_type == "Hotel"){
    require 'scripts/php/insert-hotel.php';
}

You might want to look into the documentation for Require and Include, but require is perfectly fine for what you're doing here.