Ben bir dize / metin manipülasyon app inşa etmek istiyorum:

An app consists of a form User inputs text there as a string using Click a button - which usues $_POST method to manipulate a string using oop method to :

Bir düğmeye atanmış örnek yöntemi:

public function revers_sentence() {
    $this->string = strrev($this->string);
    return $this;
}

Then the manipulated string is displayed in the same form. User can do another manipulation with a converted string

How to assign method to a button to trigger the function and display results in the same form? Can it be achived in a single php file to send and get a result? (I want to store my classes in a seperate file)

Herhangi bir yardım / fikir Takdir - herhangi bir bilge adam?

edit:

<?php
  require_once('mod.php');


  $string='';


  if (isset($_POST['string']))
    $string=$_POST['string'];

  if (isset($_POST['DoStuff']))
  {
    //$string = reverse_1_word($string);
    **$string->reverse();**<-------------------------------Fatal error:---------
  }

  if (isset($_POST['DoOtherStuff']))
  {
    $string = doOtherStuffWithThisString($string);
  }

?>

Fatal error: Call to a member function odwroc() on a non-object on line 14 bu yüzden her yeni dize bir nesne nasıl?