PHP ActiveX

TCP Socket Send Byte and Receive Byte

Demonstrates the Chilkat Socket ReceiveByte and SendByte method. PHP ActiveX

<?php

$success = 0;

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

$sock = new COM("Chilkat.Socket");

// --------------------------------------------------------------------
// This example uses the public TCP echo service at https://tcpbin.com/
// --------------------------------------------------------------------

$useTls = 0;
$port = 4242;
$maxWaitMs = 5000;
$success = $sock->Connect('tcpbin.com',$port,$useTls,$maxWaitMs);
if ($success == 0) {
    print $sock->LastErrorText . "\n";
    exit;
}

// Wait a max of 2 seconds for a response..
$sock->MaxReadIdleMs = 2000;

// Send a byte.
$sock->SendByte(96);

// The tcpbin.com echo server only echoes after receiving an LF (linefeed char)
$sock->SendByte(10);

// The echo server will echo back whatever is sent to it.
// We should be able to read the same byte back..
// After successfully reading, the byte value is available in the ReceivedInt property.
$treatAsUnsignedInt = 1;
$success = $sock->ReceiveByte($treatAsUnsignedInt);
if ($success == 0) {
    print $sock->LastErrorText . "\n";
    exit;
}

// Let's look at the value of the byte received.  It should be 96.
print $sock->ReceivedInt . "\n";

// The echo server also echoed the LF back.
$success = $sock->ReceiveByte($treatAsUnsignedInt);
// Assuming success..

// Should be decimal 10.
print $sock->ReceivedInt . "\n";

?>