<?php
set_error_handler('error_debug_handler');

function error_debug_handler($errno, $errstr, $errfile, $errline, $context, $backtrace = null) { }

session_set_save_handler(
	array('s', 'open'),
	array('s', 'close'),
	array('s', 'read'),
	array('s', 'write'),
	array('s', 'destroy'),
	array('s', 'gc')
);

class s
{
	function open() {}
	function close() {}
	function read() {}
	function write() {}
	function destroy() {}
	function gc() {}
}

session_start();
$a = new a();
$a->b();

class a
{
	function b()
	{
		die('b');
	}
}