(PHP Extension) TCP Socket Send Byte and Receive Byte

Demonstrates the Chilkat Socket ReceiveByte and SendByte method.

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<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

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

$sock = new CkSocket();

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

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

// Wait a max of 2 seconds for a response..
$sock->put_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 = true;
$success = $sock->ReceiveByte($treatAsUnsignedInt);
if ($success == false) {
    print $sock->lastErrorText() . "\n";
    exit;
}

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

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

// Should be decimal 10.
print $sock->get_ReceivedInt() . "\n";

?>