您可以尝试添加输入文件字段一次，然后在单击“添加更多”时使用jQuery添加更多字段。

以下是步骤

使用注册您的设置register_setting functionadd_menu_page. 这还需要calback函数

<?php
class WP_Site_Option{
    function __construct(){
        add_action(\'admin_init\', array(&$this,\'register_settings\') );
        add_action(\'admin_menu\', array(&$this,\'create_menu\'));  
        add_action(\'admin_print_scripts\', array(&$this,\'add_scripts\') );
        add_action(\'admin_print_styles\', array(&$this,\'add_styles\') );
    }

    public function create_menu(){
        add_menu_page(\'Site Options\', \'Site Options\', \'administrator\', \'site-options\', array(&$this,\'settings\'),$src = \'\',62);
    }

    public function register_settings(){
        register_setting( \'starter_setting_group\', \'starter\' );
    }

    public function add_styles(){
        wp_enqueue_style(\'thickbox\');
    }

    public function add_scripts(){
        wp_enqueue_script(\'thickbox\');
        wp_enqueue_script(\'meida-upload\');      
    }

    public function settings(){
        if(!current_user_can(\'manage_options\')){
            wp_die(__(\'You do not have sufficient permissions to access this page.\'));
        }

?>
        <div class="wrap">
            <h2>Site Options</h2>
            <form method="post" action="options.php"> 
                <?php @settings_fields(\'starter_setting_group\'); ?>
                <?php @do_settings_fields(\'starter_setting_group\'); ?>
                <?php $content = get_option(\'starter\'); ?>
                <table class="form-table">  
                    <script>
                        var count = 1;
                    </script>

                    <!-- loop -->

                        <?php foreach($content[\'logo\'] as $logo): ?>
                        <tr>
                        <th></th>
                        <td>
                            <input id="upload_image" type="text" size="36" name="starter[logo][]" value="<?php echo $logo; ?>"  class="regular-text upload-image"/>
                            <input id="upload_image_button" type="button" value="Upload Image" class="upload_image_button"/>
                            <br />Enter an URL or upload an image for the banner.
                            <br/>
                            <?php 
                                if($logo): 
                                    $url = $logo;
                            ?>
                                <img src="<?php echo $url; ?>" height="100" style="float:left"/>
                            <?php endif; ?>
                            <div id="temp"></div>
                        </td>
                        </tr>
                        <?php endforeach; ?>

                    <!-- loop end -->

                    <div class="more-image"></div>
                    <tr>
                        <td>
                            <input type="button" id="add-new-image" class="add-new-image" value="Add More"/>
                        </td>
                    </tr>
                </table>

                <?php @submit_button(); ?>
                <script language="JavaScript">
                    var formfield = \'\';
                    jQuery(document).ready(function() {
                        jQuery(\'.add-new-image\').on(\'click\',function(){
                            var uploaded = jQuery(\'.upload-image\');
                            var count = uploaded.length + 1;
                            var to_rep = \'<tr class="repetable-tr"><th scope="row"><label>Upload Logo</label></th><td><input id="upload_image_\'+count+\'" type="text" size="36" name="starter[logo][]" value=""  class="regular-text upload-image"/><input id="upload_image_button_\'+count+\'" type="button" value="Upload Image" class="upload_image_button"/><br />Enter an URL or upload an image for the banner.<div id="temp"></div></td></tr>\';
                            jQuery(\'.more-image\').append(to_rep);
                        });

                        jQuery(\'.upload_image_button\').live(\'click\',function() {
                            formfield = jQuery(this).prev().attr(\'id\');

                            tb_show(\'\', \'media-upload.php?type=image&TB_iframe=true\');
                            jQuery(\'#TB_iframeContent\').css(\'width\', \'800px\');
                            jQuery(\'#TB_window\').css(\'width\', \'800px\');
                            return false;
                        });

                        window.send_to_editor = function(html) {
                            imgurl = jQuery(\'img\', html).attr(\'src\');
                            jQuery(\'#\'+formfield).val(imgurl);
                            //jQuery(\'#temp\').html(\'<img src="\'+imgurl+\'" width="200">\');
                            tb_remove();
                        }
                    });
                </script>
            </form>
        </div>
<?php
    }
}
$wp_site_option = new WP_Site_Option();
    ?>