难道phpinfo()取出的值不可信? - Chinaunix

#!/usr/local/bin/php –q
<?php
// Set time limit to indefinite execution
set_time_limit (0);
// Set the ip and port we will listen on
$address = 'localhost';
$port = 9000;
// Create a TCP Stream socket
$sock = socket_create(AF_INET, SOCK_STREAM, 0);
// Bind the socket to an address/port
socket_bind($sock, $address, $port) or die('Could not bind to address');
// Start listening for connections
socket_listen($sock);
/* Accept incoming requests and handle them as child processes */
$client = socket_accept($sock);
// Read the input from the client – 1024 bytes
$input = socket_read($client, 1024);
// Strip all white spaces from input
$output = ereg_replace("[ \t\n\r]","",$input).chr(0);
// Display output back to client
socket_write($client, $output);
// Close the client (child) socket
socket_close($client);
// Close the master sockets
socket_close($sock);
?>

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In order to run the program, make sure that the first line #!/usr/local/bin/php –q is the location of the PHP CLI (or CGI) binary. You will need to change the mode so it is executable (chmod 755 socket_server.php – where socket_server.php is the name of the file) and run it using ./socket_server.php from the command line.

<?php
error_reporting(E_ALL);
echo "<h2>TCP/IP Connection</h2>\n";
/* Get the port for the WWW service. */
//$service_port = getservbyname('www', 'tcp');
$service_port = 56753;
/* Get the IP address for the target host. */
//$address = gethostbyname('www.example.com');
$address = "192.9.200.44" ;
/* Create a TCP/IP socket. */
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket < 0) {
echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n";
} else {
echo "OK.\n";
}
echo "Attempting to connect to '$address' on port '$service_port'...";
$result = socket_connect($socket, $address, $service_port);
if ($result < 0) {
echo "socket_connect() failed.\nReason: ($result) " . socket_strerror($result) . "\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";
?>

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