13.4 Working with Sockets

You want to open a socket to either a local port or a remote server.

Technique

Use the fsockopen() function, which opens a socket to the specified server. Subsequently, you send to and retrieve information from that socket via the fgets() , fgetss() , and fputs() functions:

 <?php $sp = fsockopen($hostname, $port, &$errno, &$errstr, $timeout); if (!$sp) {     print "$errstr  [$errno]<br>\n"; } else {     fputs($fp,"GET / HTTP/1.0\r\n\r\n");     while ($line = fgets($fp, 1024)) {         print $line;     } fclose($sp); } ?> 

Comments

The fsockopen() function provides a simple API for using sockets. For more information on fsockopen() and some of PHP's more advanced socket features, see Chapter 14, "Communicating with Sockets."