Http server in php

#!/usr/local/bin/php -q
<?php

error_reporting(E_ALL);

session_start();
/* Allow the script to hang around waiting for connections. */
set_time_limit(0);

/* Turn on implicit output flushing so we see what we're getting
 * as it comes in. */
ob_implicit_flush();

$address = 'localhost';
$port = 10020;
echo "Port http://$address:$port\n";

function handle($method, $path, $query, $headers)
{

}

function parse($req)
{

    $headers = explode("\r\n", $req);
    $requestLine = array_shift($headers);
    $request = explode(' ', $requestLine);

    $url = $request[1];
    $queryString = parse_url($url, PHP_URL_QUERY);
    $queryPath = parse_url($url, PHP_URL_PATH);

    parse_str($queryString, $query);
    return handle($request[0], $queryPath, $query, $headers);

}

if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
    echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
}

if (socket_bind($sock, $address, $port) === false) {
    echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";
}

if (socket_listen($sock, 5) === false) {
    echo "socket_listen() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";
}

do {
    if (($msgsock = socket_accept($sock)) === false) {
        echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";
        break;
    }

    // this method only handles GET requests
    // (parse headers, not the body of the request)
    $req = '';
    do {
        if (false === ($buf = @socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
            echo "socket_read() failed: reason: " . socket_strerror(socket_last_error($msgsock)) . "\n";
            break 2;
        }
        $req .= $buf;

        if (substr($req, -4) == "\r\n\r\n") {
            $talkback = parse($req);
            socket_write($msgsock, $talkback, strlen($talkback));
            echo $talkback . "\n";
            break;
        }

    } while (true);
    socket_close($msgsock);
} while (true);

socket_close($sock);