Regstrieren Script hat ein Fehler

[Black BABA]

Hallo bin es wieder. Also ich habe Ein Script zu Registrieren gemacht aber es hat irgendwo ein Fehler

reg.php

<?php
if(is_numeric($_POST['nick'], $_POST['pass'], $_POST['email'])){
$con = mysql_connect("imysql03", "i4461064", "rc0xq7xje15sf75e");
mysql_select_db("i4461064", $con) or die (mysql_error());

$sql = "INSERT INTO admin (ID, Name, Pass, Rang, E-Mail-Adresse) VALUES (NULL, '. $_POST['nick'] .', '. $_POST['pass'] .', 'user', '. $_POST['email'] .')";
$result = mysql_query($sql, $con);
?>

register.php

<form id="register" method="post" action="reg.php">
    <table cellspacing="1" cellpadding="0" id="register_table">

<tr><td class="desc">Nick*</td><td class="formfield"><input type="text" name="nick" /></td></tr>
     <tr><td class="desc">Pass*</td><td class="formfield"><input type="pass" name="pass" /></td></tr>
     <tr><td class="desc">Email*</td><td class="formfield"><input type="text" name="email" /></td></tr>
     <tr><td>* Pflichtfelder</td><td><input type="submit" name="submit" id="regsubmit" value="Registrieren" /></td></tr>
   </table>
                </form>

Dieses Fehlermeldung kommt

Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in /www/sites/1/iespana.es/m/e/met456/site/reg.php on line 6