$fp = fsockopen ("tcp://188.93.18.202", 4321, $errno, $errstr, 30);
if (!$fp) {
    echo "$errstr ($errno)<br>\n";
} else {
//    fputs ($fp, "GET / HTTP/1.0\r\nHost: 188.93.18.202\r\n\r\n");
    while (!feof($fp)) {
        echo fgets ($fp,128);
    }
    fclose ($fp);
}

$fp = fsockopen("188.93.18.202", 4321, $errno, $errstr, 30);

$out="GET /index.php HTTP/1.1\r\n";

fwrite ($fp, $out);

echo fgets($fp,5000);

fclose($fp);

<?php
$sh = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_connect($sh, '188.93.18.202', '4321');
$headers  = "GET / HTTP/1.0\r\n";
$headers .= "Host: 188.93.18.202\r\n";
$headers .= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.9.0.6) Gecko/2009011913 MRA 5.3 (build 02557) Firefox/3.0.6\r\n";
$headers .= "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n";
$headers .= "Accept-Language: ru,en-us;q=0.7,en;q=0.3\r\n";
$headers .= "Accept-Charset: windows-1251,utf-8;q=0.7,*;q=0.7\r\n";
$headers .= "\r\n";
socket_write($sh, $headers, strlen($headers));
$result = '';
while ($r = socket_read($sh, 1024)) $result .= $r;
echo $result;
?>