<?php
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting to mysql');

$dbname = 'work';
mysql_select_db($dbname);

$query = "SELECT userid FROM summer_packages";
$result = mysql_query($query)
or die(mysql_error());
echo "<br/><br/><br/><br/><br/><center>
<form method=\"POST\" action=\"select.php\">
<select name=\"Userid\">";
while($row=mysql_fetch_array($result)) {
echo "<option value=\"$row[userid]\">$row[userid]";
}
echo "<input type=\"Submit\" value=\"Select\">";
echo"<center/>";
echo "</select>";
?>