Online PHP editor | output for A7eN7

<?php class ParentClass { private $values; public function __construct( array $values ) { $this->values = $values; } } class ChildClass extends ParentClass { private $values; public function __construct( array $values ) { parent::__construct( $values ); $this->values = $values; } public function getTest() { if( isset( $this->values['test'] ) ) { return $this->values['test']; } } public function setTest( $value ) { return $this->values['test'] = $value; } } $object = new ChildClass( array( 'test' => 0 ) ); $object->setTest( 1 ); echo 'val: ' . $object->getTest() . PHP_EOL; print_r( $object );