hjælp i php

Her er koden:

<?php
set_error_handler("error");

$version = "0.60";
$cookieExpires = time() + 15552000; # Expires in six months.

session_start();

if ($setEmailAddress) {
    setcookie("emailAddress", $setEmailAddress, $cookieExpires);
    $emailAddress = $setEmailAddress;
}
if ($setUserLanguage) {
    setCookie("selectedLanguage", $setUserLanguage, $cookieExpires);
    $userLanguage = $setUserLanguage;
}

require("settingssaved.php");
require("themes/$theme/variables.php");

if (!$userLanguage) $userLanguage = $language;

# Ensuring that the user doesn't attempt to require a file he/she is
# not allowed to see:
if (strstr($userLanguage, "/")) exit;

require("languagefiles/$userLanguage.php");



function pageHeader($extra = "", $frameSet = false) {
    global $title, $l50, $theme;

    if ($frameSet) {
        $docType = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Frameset//EN\" \"DTD/xhtml1-frameset.dtd\">\n";
    }
    else {
        $docType = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"DTD/xhtml1-transitional.dtd\">\n";
        $body = "<body>\n";
    }

    echo $docType;
    echo "<html><head><title>".htmlspecialchars(stripslashes($title))."</title>\n";
    echo $extra;
    echo "<meta http-equiv='Content-Type' content='text/html; charset=$l50'/>\n";
    echo "<link rel='stylesheet' href='themes/$theme/style.css'/>\n";
    echo "<script type='text/javascript'>\n";
    echo "<!--\n";
    echo "function openWindow(fileName) {\n";
    echo "    uniqueId = String(Math.random()).substr(2)\n";
    echo "\n";
    echo "    window.open(fileName, uniqueId, \"height=560,width=550,menubar=yes,toolbar=no,locationbar=no,personalbar=no,scrollbars=yes,statusbar=no\")\n";
    echo "}\n";
    echo "// -->\n";
    echo "</script>\n";
    echo "</head>\n\n\n\n";

    echo $body;

    $GLOBALS["pageHeaderSent"] = TRUE;
}



function pageFooter() {
    echo stripslashes($GLOBALS["footer"])."\n";

    echo "</body></html>";
}



function error($type, $message) {
    global $pageHeaderSent, $l1, $l2;

    if ($type == E_NOTICE) return;

    if (!$pageHeaderSent) pageHeader();

    echo "<b>$l1</b><br/><br/>\n";
    echo "$message<br/><br/>\n";
    echo "<form action=''><input type='button' value='$l2' class='button' onclick='history.back()'/></form>\n";

    pageFooter();
    exit;
}



function getLine() {
    global $fp;

    # We could use rtrim() here to remove the trailing "\r\n" -
    # however, that would also remove spaces at the end of lines
    # such as "-- ".
    return substr(fgets($fp, 1024), 0, -2);
}



function command($command) {
    global $fp;

    fwrite($fp, removeLineBreaks($command)."\r\n");
    if (substr($line = getLine(), 0, 1) != "+") return false;

    return $line;
}



function headerInfo($string) {
    $lookingFor = array("contentType" => "Content-Type: ", "boundary" => "boundary=", "charSet" => "charset=", "name" => "name=", "contentTransferEncoding" => "Content-Transfer-Encoding: ", "contentDisposition" => "Content-Disposition: ", "fileName" => "filename=");
    $getValue = "[\"']?([^\"';\r]+)";

    reset($lookingFor);
    while (list($key, $value) = each($lookingFor)) {
        ereg("$value$getValue", $string, $matches);
        $info[$key] = $matches[1];

        unset($matches);
    }

    return $info;
}



function showInLine($contentType, $showImagesInLine = true) {
    $returnValue = false;

    $category = substr($contentType, 0, strpos($contentType, "/"));
    if ($category == "text" || $category == "message") $returnValue = true;

    if ($showImagesInLine) {
        $inLineImages = array("image/png", "image/jpeg", "image/gif");
        if (in_array($contentType, $inLineImages)) $returnValue = true;
    }

    return $returnValue;
}



function getHeaders($headerArray) {
    for ($i = 0; $i < sizeof($headerArray); $i++) {
        $parts = explode(": ", $headerArray[$i], 2);
        $headers[strtolower($parts[0])] = $parts[1];
    }

    return $headers;
}



function mimeHeaderDecode($string) {
    if (strstr($string, "=?")) {
        $explode = explode("=?", $string);
        $newString = $explode[0];
        for ($i = 1; $i < sizeof($explode); $i++) {
            $explode2 = explode("?", $explode[$i]);

            $newString .= (strtolower($explode2[1]) == "q") ? quoted_printable_decode($explode2[2]) : base64_decode($explode2[2]);
            $newString .= substr($explode2[3], 1);
        }
    }
    else return $string;

    return $newString;
}



# Parses an address string such as "John Doe <doe@example.com>" and
# returns the name as well as the email address. I opted not to use
# regular expressions here because it would slow things down.
function getSender($sender) {
    $senderParts["name"] = $sender;

    if (($pos = strrpos($sender, "<")) && substr($sender, -1) == ">") {
        $senderParts["name"] = substr($sender, 0, $pos - 1);
        $senderParts["email"] = substr($sender, $pos);
    }

    $firstChar = substr($senderParts["name"], 0, 1);
    $lastChar = substr($senderParts["name"], -1);
    if ($firstChar == "\"" || $firstChar == "'") $senderParts["name"] = substr($senderParts["name"], 1);
    if ($lastChar == "\"" || $lastChar == "'") $senderParts["name"] = substr($senderParts["name"], 0, -1);

    return $senderParts;
}



function quit() {
    global $fp;

    command("QUIT");

    fclose($fp);
}



function removeLineBreaks($string) {
    return strtr($string, "\r\n", "  ");
}



function listTranslations($selected) {
    $handle = opendir("languagefiles");
    while ($file = readdir($handle)) {
        if (substr($file, -4) == ".php") $languageFiles[] = substr($file, 0, -4);
    }
    sort($languageFiles);

    for ($i = 0; $i < count($languageFiles); $i++) {
        printf("<option%s>$languageFiles[$i]</option>\n", ($selected == $languageFiles[$i]) ? " selected='selected'" : "");
    }
}



if ($logOut) {
    session_unset();
    session_destroy();
}



# List of files that do *not* need a connection to the POP server:
$noConnectionNeeded = array("about.php", "help.php", "settings.php", "viewattachment.php");

if (!in_array(basename($SCRIPT_NAME), $noConnectionNeeded)) {
    foreach ($preset as $key => $value) {
        $arraySize = sizeof($value);

        if (!$arraySize) {
            $valueInput = ($key == "port") ? " value='110'" : "";
            ${$key."Input"} = "<input type='text' name='$key' id='".$key."Field'$valueInput/>";
        }
        else if ($arraySize == 1) ${$key."Input"} = $$key = $value[0];
        else ${$key."Input"} = "\n<select name='$key'>\n<option>".implode("</option>\n<option>", $value)."</option>\n</select>\n";
    }

    if ($host && $port && $username && $password) {
        $fp = fsockopen($host, $port, $errorNumber, $errorMessage, 25) or trigger_error("$l3 <i>$errorNumber $errorMessage</i>");

        getLine();
        command("USER $username");
        command("PASS $password") or trigger_error($l4);

        session_register("host");
        session_register("port");
        session_register("username");
        session_register("password");
        session_register("userLanguage");
    }
    else {
        pageHeader();

        echo stripslashes($logInHeader)."\n";

        echo "<form action='$SCRIPT_NAME' method='post'>\n";
        echo "<input type='hidden' name='".session_name()."' value='".session_id()."'/>\n";
        echo "<table $tableAttributes class='tableAutoWidth'>\n";

        echo "<tr>\n";
        echo "<th colspan='2'>$l6</th>\n";
        echo "</tr>\n";

        echo "<tr>\n";
        echo "<td>$l99</td>\n";
        echo "<td><input type='text' name='setEmailAddress' id='emailField' onblur='preFillFields()' value=\"".htmlspecialchars($emailAddress)."\"/></td>\n";
        echo "</tr>\n";

        echo "<tr>\n";
        echo "<td>$l10</td>\n";
        echo "<td>$hostInput</td>\n";
        echo "</tr>\n";

        echo "<tr>\n";
        echo "<td>$l9</td>\n";
        echo "<td>$portInput</td>\n";
        echo "</tr>\n";

        echo "<tr>\n";
        echo "<td>$l8</td>\n";
        echo "<td>$usernameInput</td>\n";
        echo "</tr>\n";

        echo "<tr>\n";
        echo "<td>$l7</td>\n";
        echo "<td><input type='password' name='password'/></td>\n";
        echo "</tr>\n";

        echo "<tr>\n";
        echo "<td>$l30</td>\n";
        echo "<td>\n";
        echo "<select name='setUserLanguage'>\n";
        listTranslations(($selectedLanguage) ? $selectedLanguage : $userLanguage);
        echo "</select>\n";
        echo "</td>\n";
        echo "</tr>\n";

        echo "<tr>\n";
        echo "<td></td>\n";
        echo "<td><input type='submit' value='$l5' class='button'/></td>\n";
        echo "</tr>\n";

        echo "</table>\n";
        echo "</form>\n";

        echo "<script type='text/javascript'>\n";
        echo "<!--\n";
        echo "document.getElementById(\"emailField\").focus()\n\n\n\n";

        echo "function preFillFields() {\n";
        echo "    emailValue = document.getElementById(\"emailField\").value\n\n";

        echo "    if (emailValue != \"\") {\n";
        # We're using a regular expression to get the email
        # address since the user might write something like
        # "Someone <someone@example.com>":
        echo "        findEmail = String(emailValue.match(/[a-z0-9._-]+@[a-z0-9.-]+\.[a-z]{2,6}/i))\n";
        echo "        findEmailHost = findEmail.substring(findEmail.indexOf(\"@\") + 1)\n\n";
       
        echo "        if (document.getElementById(\"hostField\")) document.getElementById(\"hostField\").value = findEmailHost\n";
        echo "    }\n";
        echo "}\n";
        echo "// -->\n";
        echo "</script>\n";

        echo stripslashes($logInFooter)."\n";

        pageFooter();
        exit;
    }
}
?>

Mit spørgsmål er; hvis i går ind på www.psychokatten.dk/instantwebmail/index.php kommer login frem, og det virker fint. Men hvis i skriver en mail i E-mail så skriver den i POP-serverens værtsnavn det samme som mailen bare efter @'et, en der kan rette det for mig?

På forhånd tak.