Online PHP editor | refs for O7sWK

<?php class KeyValuePairs { private $pairs; public function __construct( $arr = []) { $this->pairs = []; foreach( $arr as $k => $v) { $this->pairs[$k] = $v; } } public function __get($name) { return (isset($this->pairs[$name])) ? $this->pairs[$name] : null; } public function __set($name, $value) { $this->pairs[$name] = $value; } } class MyClass { public $foo; public $bar; public function __construct() { $this->bar = new KeyValuePairs( ['tool' => 'Here we go']); } public function __get($name) { return (isset($this->$name)) ? $this->$name : null; } } $class1 = new MyClass; var_dump($class1->foo); // null var_dump($class1->boo); // null var_dump($class1->bar->tool); // 'Here we go' var_dump($class1->bar->mars);