When i'm trying to debug a project on a virtual server, вип shows me the next message:
Failed to start debug session
reason:
failed to establish connection to client host on 127.0.0.1:7869
I have Apache 1.3.31, PHP 4.3.8.
Phpinfo():
This program makes use of the Zend Scripting Language Engine:
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies with DBG v2.11.26, (C) 2000,2001,2002,2003, by Dmitri Dmitrienko
dbg section:
DBG php debugger, version 2.11.26, Copyright 2001, 2002, Dmitri Dmitrienko, www.nusphere.com/dbg

Version 2.11.26
Linked as a shared library.
Profiler compiled, enabled

Directive Local Value Master Value
debugger.enable_session_cookie On On
debugger.enabled On On
debugger.fail_silently On On
debugger.ignore_nops Off Off
debugger.JIT_enabled Off Off
debugger.JIT_host clienthost clienthost
debugger.JIT_level 3 3
debugger.JIT_port 7869 7869
debugger.profiler_enabled On On
debugger.session_nocache On On
debugger.timeout_seconds 300 300

what is the reason I can't start debugging?

what IDE/tool did you use as a client ?

PHP Expert Editor. Does it really matter what tool I use?

Actually, yes it does matter. Please contact PHP Expert Editor authors on how to set this IDE up to work with debugger.