<?php
try {
    $ws = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

    if ($ws === false) {
        throw new Exception('socket_create() failed: '.socket_strerror(socket_last_error())."\n");
    }else{

        $host_ip = gethostbyname('0.0.0.0');
        socket_bind($ws, $host_ip, 2222);

        socket_listen($ws, 5);

        $connection = @socket_accept($ws);

        //read from websocket
        printf("< %s\n", socket_read($connection, 1000, PHP_NORMAL_READ));

        //send to client
        $data = "{var:server_value}\n";
        $byteOut = socket_write($connection, $data, strlen($data));

        if ($byteOut === false) {
            echo " Ошибка.";
            throw new Exception('socket_send() failed: '.socket_strerror(socket_last_error())."\n");
        } else {
            echo "отправлено " . $byteOut . " байт.\n";
        }

    }
}catch (Exception $e) {
    echo "\nError: ".$e->getMessage();
}
?>