i installed dbg successfully. and the result of phpinfo() contains

and
dbg
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 not compiled

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

but i used "netstat -an", there is no port 7869 opened.

i founed this in the result of phpinfo():
--disable-debug
does this has something to do with my problem?

Dear,

I had the same problem and I had found the answer.

Go to your php.ini and change the line like this:
debugger.hosts_deny = None
or add you’re local IP address after debugger.hosts_allow = 10.0.0.12

After you do this, restart PhpEd and make sure that the PHP DBG listener was stopped.

Sincerely,
Eddy

First of all,
debugger.hosts_allow, debugger.hosts_deny, debugger.ports are supported by commercial version of phped while noted version 2.11.x is a free one and therefore just ignores these settings.
Secondly,
Dbg does never open any listending sockets and therefore netstat -an would never show them too. It's DbgListener opens such sockets and Dbg module just connects to them.
Thirdly,
--disable-debug relates to debugging php engine core itself. You don't need it enabled unless you want to develop php engine or investigate its problems.