PHP add til database error

Jeg har denne lille ting til at gå ind i min database og add nogle data:

<?php
    require_once('xxxx.php');
   
    if (isset($_POST['submitBtn'])) {
        $name    = (isset($_POST['name'])) ? addslashes(htmlentities($_POST['name'])) : '' ;
        $pass  = (isset($_POST['pass'])) ? addslashes(htmlentities($_POST['pass'])) : '' ;
        $email  = (isset($_POST['email'])) ? addslashes(htmlentities($_POST['email'])) : '' ;
        $race  = race("Human");
        $str  = str("8");
        $agi  = agi("8");
        $sta  = sta("8");
        $int  = int("8");
        $dex  = dex("8");
        $money  = money("100");
        $maxhp  = maxhp("80");
        $currenthp  = currenthp("80");
        $maxmana  = maxmana("80");
        $currentmana  = currentmana("80");
       
        //Minimum name and comment length.
        if ((strlen($name) > 3)){
            $sql = "INSERT INTO players (accountname,accountpass,email,race,str,agi,sta,int,dex,money,maxhp,currenthp,maxmana,currentmana) VALUES (";
            $sql .= "'".$name."','".$pass."','".$email."','".$race."','".$str."','".$agi."','".$sta."','".$int."','".$dex."','".$money."','".$maxhp."','".$currenthp."','".$maxmana."','".$currentmana."')";
            mysql_query($sql) or die(mysql_error());
        }
       
        header("Location: play.php");
    }
    else {

?>

  <h1>Register</h1>
  <form action="human.php" method="post" name="human">
    <table>
      <tr><th>Account Name:</th><td><input name="name" /></td></tr>
      <tr><th>Account Password:</th><td><input name="pass" /></td></tr>
      <tr><th>Email:</th><td><input name="email" /></td></tr>
          <input type="submit" name="submitBtn" value="Register"/></td>
      </tr>
    </table> 
</form>
<?php } ?>   


Men jeg får denne error hver gang jeg prøver at register:


Fatal error: Call to undefined function: race() in /home/virtual/xxxx.dk/public_html/online/human.php on line 8


Nogle der kan se hvor min fejl ligger?
På forhånd mange tak for hjælpen :)

Mvh.
XsiX