Simple Class in PHP.

simple.class.php

<?php

class SimpleClassPHP{
    
    private $simply;
    private $name;
    
    public function __construct(){
      $this->simply = "Hello";
    }
    
    public function setName($name){
      $this->name = $name;
      return $this;
    }
    
    public function greet(){
      if($this->name){
        echo $this->simply . " " . $this->name . "!";
      }else{
        echo $this->simply . "!";
      }
    }
  
}

/* Usage Example */
$simpleClass = new SimpleClassPHP();
$simpleClass->setName("Rox")
            ->greet();