when I used appserv-win32-2.4.3, everything is ok, but there is no
ldap related functions support, I uncommented extension=php_l dap.dll
in c:\winnt\php.in i, and thought everything will be allright, but I
found there is no php_ldap.dll in $appserv\php\ex tensions\ or
$appserv\php\ex t\.

Then I took php_ldap.dll of Appserv-win32-2.5.3 and tried to use it,
but it is not work, so I reinstalled appserv-win32-2.5.3,...