我写了一个wordpress插件。我的插件有两个选项。一个是图像上传机制，另一个是复选框。我的代码如下：

<?php
/*
Plugin Name: Plugin Name
Plugin URI:
Description: Description
Version: 0.0.1
Author: Author Name
Author URI:
License: GPL3+
*/

add_action( \'admin_menu\', \'pluginname_menu\' );

function pluginname_menu()
    {
    add_options_page( \'PluginName Options\', \'pluginname\', \'manage_options\', \'pluginname_options_page\', \'pluginname_options_page\' );
    }

add_action( \'admin_init\', \'pluginname_admin_init\' );

function pluginname_admin_init()
    {
    register_setting( \'pluginname_options\', \'pluginname-settings\' );
    add_settings_section( \'section\', \'Section\', \'pluginname_section_callback\', \'pluginname_options-section\' );
    $options_array = get_option(\'pluginname-settings\');
    add_settings_field( \'upload_image\', \'Upload image\', \'image_upload_callback\', \'pluginname_options-section\', \'section\');
    add_settings_field( \'use_image\', \'Use image\', \'use_image_callback\', \'pluginname_options-section\', \'section\', array(
    \'name\' => \'pluginname-settings[use_image]\',
    \'value\' => isset($options_array[\'use_image\']) ? $options_array[\'use_image\'] : \'\')
    );

    }

function pluginname_validate($input)
    {
    $options_array = get_option(\'pluginname-settings\');
    $output = array_merge($options_array, $input);
    return $output;
    }

function pluginname_section_callback()
    {
    echo \'Feel free to change parameters below.\';
    }

function upload_image_callback()
    {
    echo "<label for=\'image\'>Filename:</label><input type=\'file\' name=\'file\' value=\'image\' />";
    }

function use_image_callback( $args )
    {
    $name = esc_attr( $args[\'name\'] );
    $value = esc_attr( $args[\'value\'] );
    echo "<input type=\'checkbox\' name=\'$name\' value=\'$value\'>";
    }

function pluginname_options_page()
    {
    $uploadedfile = isset($_FILES[\'file\']) ? $_FILES[\'file\'] : \'\';
    if ($uploadedfile[\'error\'] == \'0\')
        {
        $upload_overrides = array( \'test_form\' => false );
        $movefile = wp_handle_upload( $uploadedfile, $upload_overrides );
        $options_array = get_option(\'pluginname-settings\');
        $options_array[\'upload_image\'] = $movefile[\'url\'];
        update_option(\'pluginname-settings\', $options_array);
    }

    echo "<div class=\'wrap\'>";
    echo "<h2>Options</h2>";
    echo "<form action=\'options.php\' method=\'POST\' enctype=\'multipart/form-data\'>";
    settings_fields( \'pluginname_options\' );
    do_settings_sections( \'pluginname_options-section\' ); 
    submit_button(\'Update\', \'primary\',  \'submit-form\', false);
    echo "</form>";
    echo "</div>";
}
?>

我很难以相同的形式使用这两个选项。如果我删除action=\'options.php\', 则不会保存复选框值（不会调用验证函数）。如果我删除enctype=\'multipart/form-data\', 我无法上传。保留所有内容将使选项页完全不可用。请帮忙。