我使用以下方法让用户登录：

       <form name=\'loginform\' id=\'loginform\' action=\'<?php echo get_settings(\'siteurl\')?>/wp-login.php\' method=\'post\'>
                <label>User:</label><br />
                <input type=\'text\' name=\'log\' id=\'user_login\' class=\'input\' tabindex=\'20\' /><input type=\'submit\' name=\'wp-submit\' id=\'wp-submit\' value=\'Login\' tabindex=\'23\' /><br />
                <label>Pass:</label><br />
                <input type=\'password\' name=\'pwd\' id=\'user_pass\' class=\'input\' tabindex=\'21\' />
                <span id="forgotText"><a href="<?php echo get_settings(\'siteurl\')?>/wp-login.php?action=lostpassword"><?php _e(\'Forgot\')?>?</a></span><br />
                <?php //echo "<input name=\'rememberme\' type=\'hidden\' id=\'rememberme\' value=\'forever\' />";?>
                <?php echo wp_register(\'\',\'\'); ?>
                <input type=\'hidden\' name=\'redirect_to\' value=\'<?php echo htmlspecialchars($_SERVER[\'REQUEST_URI\'])?>\' />
            </form>
            <?php
            global $opt_jfb_hide_button;
            if( !get_option($opt_jfb_hide_button) )
            {
                jfb_output_facebook_btn();
                //jfb_output_facebook_init(); This is output in wp_footer as of 1.5.4
                jfb_output_facebook_callback();
            }
?>