Edit report at http://bugs.php.net/bug.php?id=51570&edit=1

 ID:               51570
 Updated by:       fel...@php.net
 Reported by:      ealexs at gmail dot com
 Summary:          is_subclass_of fails to autoload the classes
-Status:           Open
+Status:           Feedback
 Type:             Bug
 Package:          Reproducible crash
 Operating System: Debian
 PHP Version:      5.2.13

 New Comment:

Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.




Previous Comments:
------------------------------------------------------------------------
[2010-04-16 15:56:25] ealexs at gmail dot com

Description:
------------
is_subclass_of fails to autoload the classes causing PHP do die and
apache returns an empty page. NO error is triggered ! It was very hard
to find the cause



My php config it's here:

http://alex.softdev.ro/info.php



Failing function:

function ClassIsA($object_class, $class)

        {

                if ($object_class == $class)

                        return true;

                return (is_subclass_of($object_class, $class));

        }





If changed it works:



function ClassIsA($object_class, $class)

        {

                // use this to force the load of the classes

                if (!class_exists($object_class))

                        throw new Exception("Class $object_class not found");

                // use this to force the load of the classes

                if (!class_exists($class))

                        throw new Exception("Class $class not found");

                        

                if ($object_class == $class)

                        return true;

                return (is_subclass_of($object_class, $class));

        }



looks like calling class_exists calls autoload and works fine



Thanks,

Alex

Test script:
---------------
Failing function:

function ClassIsA($object_class, $class)

        {

                if ($object_class == $class)

                        return true;

                return (is_subclass_of($object_class, $class));

        }





If changed it works:



function ClassIsA($object_class, $class)

        {

                // use this to force the load of the classes

                if (!class_exists($object_class))

                        throw new Exception("Class $object_class not found");

                // use this to force the load of the classes

                if (!class_exists($class))

                        throw new Exception("Class $class not found");

                        

                if ($object_class == $class)

                        return true;

                return (is_subclass_of($object_class, $class));

        }



------------------------------------------------------------------------



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