<?php
if (!isset($_POST['submit'])) {
  echo "Blank box.  retry";
} else {
  $tag = $_POST['submit'];

  $location="localhost";
  $username="sj";
  $password="[ass";
  $database="sj_xbl";

  mysql_connect($location,$username,$password);
  mysql_select_db($database) or die( "Unable to select database");
  $query="SELECT * FROM `members` WHERE `tag` LIKE '%$tag%'";
  $result=mysql_query($query);

  if(!$result) {
    die(mysql_error());
  }

  while ($row = mysql_fetch_assoc($result)) {
    echo $row['tag'];
  }
}
?>