__set and __get PHP

magicMethodTest.php

// if $firstName is made public then __set won't be called 
<?php
 
class Person{
	private $firstName;
 
	public function __get($propertyName){
		echo "attempted to read non-existing property: $propertyName 
";
	}	
	public function __set($propertyNane, $propertyValue){
		echo "attempted to write to non-existing property: $propertyNane 
";
	} 
 
}
 
$p = new Person();
 
$p->firstName = 'Doe';
echo $p->firstName;