<?php

abstract class ParentClass {
	private $parentName;
	
	public function __construct($name) {
		$this->parentName = $name;
	}
	
	
	public function getParentName() {
		return $this->parentName;
	}
	
}

class ChildClass extends ParentClass {
	
}


$b = new ChildClass('joj');

var_dump($b);


echo $b->getParentName();