$_SERVER['PHP_SELF'] not working [closed]

Answer 1

action not actoin , and you can simply write

 <form method="post">

without action and it will post values on the same page

Answer 2

The problem is $_SERVER['PHP_SELF'] returns the name of script. You probably mean $_SERVER['REQUEST_URI']. It is working with actoin because most of browsers will submit it to the same page when there is no action attribute.