php tcpping

There is no built-in function in PHP for performing TCP ping (tcpping). However, you can use socket functions in PHP to implement a basic TCP ping functionality. Here's an example:

function tcpping($host, $port, $timeout = 5) {
    $socket = @fsockopen($host, $port, $errno, $errstr, $timeout);

    if ($socket) {
        fclose($socket);
        return true;
    } else {
        return false;
    }
}

// Usage example
$host = 'example.com';
$port = 80;
$timeout = 5;

if (tcpping($host, $port, $timeout)) {
    echo "TCP ping successful!";
} else {
    echo "TCP ping failed!";
}

In this example, the tcpping function takes a host, port, and optional timeout as parameters. It attempts to open a TCP connection to the specified host and port using fsockopen function. If the connection is successful, it returns true, indicating a successful TCP ping. Otherwise, it returns false.

Note that @ is used to suppress any error messages that may occur during the connection attempt. You can remove it if you want to handle the errors explicitly.