PHP code that creates a search form for a database

Hi,

I was wondering how to put this php code in WordPress. Can it even be done with it connecting to a separate database? Right now all this is being done Locally.

<h2>Search</h2>
<form name=”search” method=”post” action=”<?=$PHP_SELF?>”>
Seach for: <input type=”text” name=”find” /> in
<Select NAME=”field”>
<Option VALUE=”store”>Store</option>
<Option VALUE=”category”>Category</option>
<Option VALUE=”product”>Product</option>
</Select>
<input type=”hidden” name=”searching” value=”yes” />
<input type=”submit” name=”search” value=”Search” />
</form>

<?php
//This is only displayed if they have submitted the form
if ($searching == “yes”)
{
echo “<h2>Results</h2><p>”;

//If they did not enter a search term we give them an error
if ($find == “”)
{
echo “<p>You forgot to enter a search term”;
exit;
}

// Otherwise we connect to our Database
mysql_connect(“localhost”, “root”, “”) or die(mysql_error());
mysql_select_db(“savings”) or die(mysql_error());

// We preform a bit of filtering
$find = strtoupper($find);
$find = strip_tags($find);
$find = trim ($find);

//Now we search for our search term, in the field the user specified
$data = mysql_query(“SELECT * FROM users WHERE upper($field) LIKE’%$find%'”);

//And we display the results
while($result = mysql_fetch_array( $data ))
{
echo $result[‘store’];
echo ” “;
echo $result[‘category’];
echo “”;
echo $result[‘product’];
echo “”;
echo “”;
}

//This counts the number or results – and if there wasn’t any it gives them a little message explaining that
$anymatches=mysql_num_rows($data);
if ($anymatches == 0)
{
echo “Sorry, but we can not find an entry to match your query

“;
}

//And we remind them what they searched for
echo “<b>Searched For:</b> ” .$find;
}
?>