PhP Phreik Bot

<h1>PhP Bot</h1>
<?php
// Prevent PHP from stopping the script after 30 sec
set_time_limit(0);

// Edit these settings
$chan = "#afterhours";
$server = "irc.phreik.net";
$port = 6667;
$nick = "PHP_Bot";
$account = "0000070050 340c6b464ed5e1ce555a236f102795a6 PY";

// STOP EDITTING NOW.
$socket = fsockopen("$server", $port);
fputs($socket,"USER $nick $nick $nick $nick :$nick\n");
fputs($socket,"NICK $nick\n");
fputs($socket,"Account $account\n");
fputs($socket,"JOIN ".$chan."\n");

while(1) {
    while($data = fgets($socket)) {
            echo nl2br($data);
            flush();

            $ex = explode(' ', $data);
        $rawcmd = explode(':', $ex[3]);
        $oneword = explode('<br>', $rawcmd);
            $channel = $ex[2];
        $nicka = explode('@', $ex[0]);
        $nickb = explode('!', $nicka[0]);
        $nickc = explode(':', $nickb[0]);

        $host = $nicka[1];
        $nick = $nickc[1];

            if($ex[0] == "PING"){
                fputs($socket, "PONG ".$ex[1]."\n");
            }

        $args = NULL; for ($i = 4; $i < count($ex); $i++) { $args .= $ex[$i] . ' '; }
         echo $args ;
            if ($rawcmd[1] == "!sayit") {
                fputs($socket, "PRIVMSG ".$channel." :".$args." \n");
            }
        elseif ($rawcmd[1] == "!md5") {
            fputs($socket, "PRIVMSG ".$channel." :MD5 ".md5('$args')."\n");
        }
    }
}
?>