PHP - Ideas On Validating A Word Submitted Against A List Of Predetermined Words?

I have a situation where I need to put a textbox and a submit button on a page. The user is logged in. The script needs to check against a list of words to make sure the word the user entered is correct and if so submit their information(ie:name, email, time, date, word entered to a database table. The part i'm having trouble with is figuring out how to make it check against a specific set of words.

Code: [Select]
<p><strong>Enter Word</strong></p>
<form action="/paradisepassword.php" method="post">
<input type="hidden" name="action" value="password2paradise" />
                <table cellpadding="5px">
<tr>
<td style="padding:3px;"><label for="password2paradise">Enter he :</label></td>
<td style="padding:3px;"><input name="password2paradise" type="password2paradise" id="password2paradise" value="" maxlength="30" tabindex="5" /></td>
</tr>
                    <tr>
<td style="padding:3px;">&nbsp;</td>
<td style="padding:3px;"><input name="submit" type="submit" value="Submit Password" tabindex="7" class="generalButton" /></td>
</tr>
                 </table>
              </form>
and the php file to process it:


<?php
include_once($_SERVER['DOCUMENT_ROOT']."/_core/config.php");
include_once($_SERVER['DOCUMENT_ROOT']."/_core/db-connect.php");
include_once($_SERVER['DOCUMENT_ROOT']."/_core/functions.php");
include_once($_SERVER['DOCUMENT_ROOT']."/_core/user-cookies.php"); 

/////////////////////////////////////////////////////////////////////////////

//function submitParadisePassword($intContestantID, $intDateSent, $intParadisePassword, $strType){

$paradise_password = paradisePassword("password1", "password2", "password3", "password4", "password5", "password6", "password7", "password8", "password9", "password10");

if (!$paradise_password == paradisePassword); {

// success!
$query_insert="INSERT INTO ".DB_DATABASE.".paradisepassword_2010
(
accountID,
nickname,
firstName,
lastName,
email,
paradisePassword,
sentFromUrl,
dateSent,
dateSentTimestamp,
ipAddress
)
VALUES
(
'".mysql_real_escape_string($_POST['accountID'])."',
'".mysql_real_escape_string($_POST['nickname'])."',
'".mysql_real_escape_string($_POST['firstName'])."',
'".mysql_real_escape_string($_POST['lastName'])."',
'".mysql_real_escape_string($_POST['email'])."',
'".mysql_real_escape_string($_POST['paradisePassword'])."',
'".mysql_real_escape_string($_POST['sentFromUrl'])."',
'".date("Y-m-d")."',
'".time()."',
'".$_SERVER['REMOTE_ADDR']."'
)
";
mysql_query($query_insert);

header("Location: ".$_POST['sentFromUrl']."?p2p=success");

} else {

header("Location: ".$_POST['sentFromUrl']."?p2p=fail");
}
//}

?>


what am i missing?