#50558 [NEW]: Broken object model when extending tidy

From: degeberg@php.net Operating system: Irrelevant PHP version: 5.3.1 PHP Bug Type: Class/Object related Bug description: Broken object model when extending tidy Description: ------------ When extending the class tidy (http://docs.php.net/class.tidy) with a subtype MyTidy, the PHP engine fails type checks for MyTidy (probably easier to explain using code). This is inconsistent with normal behavior in the object model. is_a($o, get_class($o)) should always be true if $o is an object, that is an object should always be an instance of its own class. Reproduce code: --------------- <?php class MyTidy extends tidy { // foo } function doSomething(MyTidy $o) { var_dump($o); } $o = new MyTidy(); var_dump(is_a($o, get_class($o)), get_class($o)); doSomething($o); Expected result: ---------------- bool(true) string(7) "MyTidy" object(MyTidy)#1 (2) { ["errorBuffer"]=> NULL ["value"]=> NULL } Actual result: -------------- bool(false) string(6) "MyTidy" PHP Catchable fatal error: Argument 1 passed to doSomething() must be an instance of MyTidy, instance of tidy given, called in /home/daniel/test.php on line 16 and defined in /home/daniel/test.php on line 7 Catchable fatal error: Argument 1 passed to doSomething() must be an instance of MyTidy, instance of tidy given, called in /home/daniel/test.php on line 16 and defined in /home/daniel/test.php on line 7 -- Edit bug report at http://bugs.php.net/?id=50558&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50558&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50558&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50558&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=50558&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50558&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=50558&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=50558&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=50558&r=needscript Try newer version: http://bugs.php.net/fix.php?id=50558&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=50558&r=support Expected behavior: http://bugs.php.net/fix.php?id=50558&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=50558&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=50558&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=50558&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50558&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=50558&r=dst IIS Stability: http://bugs.php.net/fix.php?id=50558&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=50558&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=50558&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=50558&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=50558&r=mysqlcfg