Php/docs/sockets.examples
Examples
Example #1 Socket example: Simple TCP/IP server
This example shows a simple talkback server. Change the
address and port variables
to suit your setup and execute. You may then connect to the
server with a command similar to: telnet 192.168.1.53
10000 (where the address and port match your
setup). Anything you type will then be output on the server
side, and echoed back to you. To disconnect, enter 'quit'.
#!/usr/local/bin/php -q<?phperror_reporting(E_ALL);/* Allow the script to hang around waiting for connections. */set_time_limit(0);/* Turn on implicit output flushing so we see what we're getting * as it comes in. */ob_implicit_flush();$address = '192.168.1.53';$port = 10000;if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) { echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";}if (socket_bind($sock, $address, $port) === false) { echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";}if (socket_listen($sock, 5) === false) { echo "socket_listen() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";}do { if (($msgsock = socket_accept($sock)) === false) { echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; break; } /* Send instructions. */ $msg = "\nWelcome to the PHP Test Server. \n" . "To quit, type 'quit'. To shut down the server type 'shutdown'.\n"; socket_write($msgsock, $msg, strlen($msg)); do { if (false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) { echo "socket_read() failed: reason: " . socket_strerror(socket_last_error($msgsock)) . "\n"; break 2; } if (!$buf = trim($buf)) { continue; } if ($buf == 'quit') { break; } if ($buf == 'shutdown') { socket_close($msgsock); break 2; } $talkback = "PHP: You said '$buf'.\n"; socket_write($msgsock, $talkback, strlen($talkback)); echo "$buf\n"; } while (true); socket_close($msgsock);} while (true);socket_close($sock);?>
Example #2 Socket example: Simple TCP/IP client
This example shows a simple, one-shot HTTP client. It simply connects to a page, submits a HEAD request, echoes the reply, and exits.
<?phperror_reporting(E_ALL);echo "<h2>TCP/IP Connection</h2>\n";/* Get the port for the WWW service. */$service_port = getservbyname('www', 'tcp');/* Get the IP address for the target host. */$address = gethostbyname('www.example.com');/* Create a TCP/IP socket. */$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);if ($socket === false) { echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";} else { echo "OK.\n";}echo "Attempting to connect to '$address' on port '$service_port'...";$result = socket_connect($socket, $address, $service_port);if ($result === false) { echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";} else { echo "OK.\n";}$in = "HEAD / HTTP/1.1\r\n";$in .= "Host: www.example.com\r\n";$in .= "Connection: Close\r\n\r\n";$out = ;echo "Sending HTTP HEAD request...";socket_write($socket, $in, strlen($in));echo "OK.\n";echo "Reading response:\n\n";while ($out = socket_read($socket, 2048)) { echo $out;}echo "Closing socket...";socket_close($socket);echo "OK.\n\n";?>
