php 直接在页面上查询数据库，执行SQL语句

<?php
if (isset($_POST[\'submit\'])) {
      $rowID = $_POST[\'id\'];
      mysql_connect(\"mysql153.secureserver.net\",\"java2s\",\"password\");
      mysql_select_db(\"java2s\");

      $query = \"SELECT * FROM Employee WHERE ID=\'$id\'\";
      $result = mysql_query($query);
      list($name,$productid,$price,$description) = mysql_fetch_row($result);
}

?>
<form action=\"<?php echo $_SERVER[\'PHP_SELF\']; ?>\" method=\"post\">
   <select name=\"id\">
      <option name=\"\">Choose a employee:</option>
      <option name=\"1\">1</option>
      <option name=\"2\">2</option>
      <option name=\"3\">3</option>
   </select>
   <input type=\"submit\" name=\"submit\" value=\"Submit\" />
</form>
//该片段来自于http://outofmemory.cn