Earlier quoted context omitted.
It basically did for simple web programming what visual basic did for Windows desktop toys: allowed you to throw some UI together (drag & drop components in the VB case, any old HTML with links or forms for PHP) then start stringing bit of code in haphazardly to link it together. No need to learn a more complex compiler or other build tools, worry about configuring CGI or other web server tech (unless running PHP you…
>Foreign keys? Let the business layer worry about rules like that! Rails made this approach viable at the time.
Wait for the crows.