<form action=search.php method=post>
    <label for=login>Login</label>
    <input type=text id=user_login name=login><br>
    <label for=login>Name</label>
    <input type=text id=user_showname name=showname><br>
    <input type=submit value=Update formaction=update.php>
    <input type=submit value=Delete formaction=delete.php>
    <input type=submit value=Search>
</form>