Online PHP editor | output for 4i4Ch

<?php abstract class parentTest{ protected $innerVar = ''; public function __construct() { if(empty($this->innerVar)){ echo 'too soon'; throw(new Exception('too soon')); } }}abstract class childTest extends parentTest{ protected $outerVar = ''; public function __construct() { if(empty($this->innerVar) || empty($this->outerVar)){ echo 'too soon'; throw(new Exception('too soon')); } }}class implTest extends parentTest{ protected $innerVar = 'hi';}class implChildTest extends childTest{ protected $innerVar = 'hi'; protected $outerVar = 'hello there';}new implTest();new implChildTest();