The following code works on PHP3 versions prior to 3.0.7:

	$fp = fsockopen('localhost', 25);
	echo fgets($fp, 256);

However, on 3.0.8 it appears not to work. Instead the HTTP connection hangs (Apache server status shows mode W even after HTTP connection is closed by the webbrowser).

To make it work on 3.0.8, the following "workaround" can be applied:

	$fp = fsockopen('localhost', 25);
	set_socket_blocking($fp, 0);
	sleep(1);
	echo fgets($fp, 256);

The following also works on 3.0.8 (i.e. the connection is closed by the other part):

	$fp = fsockopen('localhost', 25);
	fputs($fp, "quit\n");
	echo fgets($fp, 256);


Loaded modules: mod_php3, mod_setenvif, mod_unique_id, mod_usertrack, mod_headers, mod_cern_meta, mod_auth_anon, mod_auth, mod_access, mod_alias, mod_userdir, mod_actions, mod_imap, mod_asis, mod_cgi, mod_dir, mod_autoindex, mod_include, mod_status, mod_negotiation, mod_mime, mod_mime_magic, mod_log_referer, mod_log_agent, mod_log_config, mod_env, http_core

[PHP_3]
engine                  =       On
short_open_tag  =       On
asp_tags                =       On
precision               =       14
y2k_compliance  =       Off
safe_mode               =       Off
safe_mode_exec_dir      =

max_execution_time = 30
memory_limit = 8388608

error_reporting =       7
display_errors  =       On
log_errors              =       Off
track_errors    =       Off
warn_plus_overloading   =       Off
magic_quotes_gpc        =       On
magic_quotes_runtime=   Off
magic_quotes_sybase     =       Off
track_vars                      =       On
auto_prepend_file       =
auto_append_file        =
include_path    =
doc_root                =
user_dir                =
upload_max_filesize = 5000000
extension_dir   =       ./

[Syslog]
define_syslog_variables = Off

[mail function]
SMTP                    =       localhost
sendmail_from   =       me@localhost.com
sendmail_path   =

[Debugger]
debugger.host   =       localhost
debugger.port   =       7869
debugger.enabled        =       False

[SQL]
sql.safe_mode   =       Off

[bcmath]
bcmath.scale    =       0