--TEST-- link_005: Pass different class types to constructors --FILE-- _my_number = $num; parent::__construct($tester); } } class TesterFail { protected $summary; protected $fulltext; function __construct($summary, $fulltext) { $this->summary = $summary; $this->fulltext = $fulltext; } } // This should work: TesterExtend extends the Structure_LinkedList_DoubleNode class $tester_extend = new TesterExtend(null, 1); $xyy = new Structures_LinkedList_Double($tester_extend); print "Checking for errors in the expected success case:\n"; // This should fail print "Checking for errors in the expected failure case:\n"; $tester_fail = new TesterFail(null, 1); $xyy_fail = new Structures_LinkedList_Double($tester_fail); ?> --EXPECTF-- Checking for errors in the expected success case: Checking for errors in the expected failure case: %satal error: Argument 1 passed to Structures_LinkedList_Double::__construct() must be an instance of Structures_LinkedList_DoubleNode%s