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));
	}