(PHP Extension) Bind and Listen on a Randomly Selected Unused Port

Demonstrates how to bind and listen on a randomly selected unused port.

Note:The ListenPort property used in this example is available starting in Chilkat v9.5.0.59.

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$listenSocket = new CkSocket();

// Pass a value of 0 for the port number to randomly select
// an unused port.
// (The 2nd argument allows for a backlog of 25 pending connection requests when accepting connections.)
$success = $listenSocket->BindAndListen(5555,25);
if ($success != true) {
    print $listenSocket->lastErrorText() . "\n";
    exit;
}

// Find out what port was chosen.
// Note: The ListenPort propety was added in Chilkat v9.5.0.59
$listenPort = $listenSocket->get_ListenPort();
print 'Chosen listen port = ' . $listenPort . "\n";

?>