Run php function inside jQuery click

Question

How do i run a PHP function inside jQuery click event. I have the following which is not correct. when the user clicks on a button, i want a new directly created.

Answer 1

Just do an ajax request and then execute the PHP server side:

$('button').click(function(){
  $.ajax({url: 'mkdir.php'});
  return false;
})

and the php:

That's all you need.