1.2.1597. ext/sockets

Extension socket.

The socket extension implements a low-level interface to the socket communication functions based on the popular BSD sockets, providing the possibility to act as a socket server as well as a client.

<?php

//Example #2 Socket example: Simple TCP/IP client
//From the PHP manual

error_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()) . PHP_EOL;
} else {
    echo 'OK.'.PHP_EOL;
}

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.'.PHP_EOL;
}

$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';
?>

See also Sockets.

1.2.1597.1. Specs

Short name	Extensions/Extsockets
Rulesets	All, Appinfo, CE, Changed Behavior
Exakat since	0.8.4
PHP Version	All
Severity
Time To Fix
Precision	Very high
Available in	Entreprise Edition, Community Edition, Exakat Cloud