4chan tripcode code

$names=iconv("UTF-8", "CP932//IGNORE", $name); // convert to Windows Japanese #ｋａｍｉ

  //start new tripcode crap
    list ($name) = explode("#", $name);
    $name = CleanStr($name);

    if(preg_match("/\#+$/", $names)){
        $names = preg_replace("/\#+$/", "", $names);
    }
    if (preg_match("/\#/", $names)) {
        $names = str_replace("&#","&&",htmlspecialchars($names)); # otherwise HTML numeric entities screw up explode()!
        list ($nametemp,$trip,$sectrip) = str_replace("&&", "&#", explode("#",$names,3));
        $names = $nametemp;
        $name .= "</span>";

        if ($trip != "") {
            if (FORTUNE_TRIP == 1 && $trip == "fortune") {
                $fortunes = array("Bad Luck","Average Luck","Good Luck","Excellent Luck","Reply hazy, try again","Godly Luck","Very Bad Luck","Outlook good","Better not tell you now","You will meet a dark handsome stranger","&#65399;&#65408;&#9473;&#9473;&#9473;&#9473;&#9473;&#9473;(&#65439;&#8704;&#65439;)&#9473;&#9473;&#9473;&#9473;&#9473;&#9473; !!!!","&#65288;&#12288;´_&#12445;`&#65289;&#65420;&#65392;&#65437; ","Good news will come to you by mail");
                $fortunenum = rand(0,sizeof($fortunes)-1);
                $fortcol = "#" . sprintf("%02x%02x%02x",
                    127+127*sin(2*M_PI * $fortunenum / sizeof($fortunes)),
                    127+127*sin(2*M_PI * $fortunenum / sizeof($fortunes)+ 2/3 * M_PI),
                    127+127*sin(2*M_PI * $fortunenum / sizeof($fortunes) + 4/3 * M_PI));
                $com = "<font color=$fortcol><b>Your fortune: ".$fortunes[$fortunenum]."</b></font><br /><br />".$com;
                $trip = "";
                if($sectrip == "") {
                    if($name == "</span>" && $sectrip == "")
                        $name = S_ANONAME;
                else
                    $name = str_replace("</span>","",$name);
        }
        } else if($trip=="fortune") {
        //remove fortune even if FORTUNE_TRIP is off
        $trip="";
                if($sectrip == "") {
                        if($name == "</span>" && $sectrip == "")
                                $name = S_ANONAME;
                        else
                                $name = str_replace("</span>","",$name);
                }

        } else {

            $salt = strtr(preg_replace("/[^\.-z]/",".",substr($trip."H.",1,2)),":;<=>?@[\\]^_`","ABCDEFGabcdef");
            $trip = substr(crypt($trip, $salt),-10);
            $name.=" <span class=\"postertrip\">!".$trip;
            }
        }


        if ($sectrip != "") {
            $salt = "LOLLOLOLOLOLOLOLOLOLOLOLOLOLOLOL"; #this is ONLY used if the host doesn't have openssl
                                                    #I don't know a better way to get random data
        if (file_exists(SALTFILE)) { #already generated a key
            $salt = file_get_contents(SALTFILE);
        } else {
            system("openssl rand 448 > '".SALTFILE."'",$err);
            if ($err === 0) {
                chmod(SALTFILE,0400);
                $salt = file_get_contents(SALTFILE);
            }
        }
            $sha = base64_encode(pack("H*",sha1($sectrip.$salt)));
            $sha = substr($sha,0,11);
                if($trip=="") $name.=" <span class=\"postertrip\">";
                $name.="!!".$sha;
        }
    }