我正在创建我的第一个WordPress插件。这是一个扩展Visual Composer的简单插件，允许您删除VC中的元素选项（如屏幕截图所示）。

在插件“选项”页面上，我正在创建一个表单来显示/隐藏元素。这是我的代码：

// Going to add a conditional statement here to run this vc_remove_element function if the checkbox for Row is selected
vc_remove_element( "vc_row" ); // Row

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

function plugin_admin_settings_tab() {

    add_options_page(\'Remove Visual Composer Elements\', \'Remove Visual Composer Elements\', \'manage_options\', \'remove_visual_composer_elements\', \'plugin_rvce_options_page\');

}

?>

<?php function plugin_rvce_options_page() { ?>

<div>

    <form action="options.php" method="post">

        <?php settings_fields(\'plugin_options\'); ?>
        <?php do_settings_sections(\'plugin\'); ?>

        <input name="Submit" type="submit" value="<?php esc_attr_e(\'Save Changes\'); ?>" />

    </form>

</div>

<?php } ?>

<?php

// ADMIN SETTINGS

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

function plugin_rvce_admin_init(){

register_setting( \'plugin_options\', \'plugin_options\', \'plugin_rvce_options_validate\' );
add_settings_section(\'plugin_main\', \'Visual Composer Element Settings\', \'plugin_rvce_section_text\', \'plugin\');
add_settings_field(\'Checkbox Element\', \'Row\', \'sandbox_checkbox_element_callback\', \'plugin\', \'plugin_main\' );

} 

function sandbox_checkbox_element_callback() {

$options = get_option( \'plugin_options\' );

$html = \'<input type="checkbox" id="checkbox_example" name="sandbox_theme_input_examples[checkbox_example]" value="1"\' . checked( 1, $options[\'checkbox_example\'], false ) . \'/>\';
$html .= \'<label for="checkbox_example"> Hide</label>\';

echo $html;

}

?>

<?php function plugin_rvce_section_text() {
    echo \'<p>Remove Visual Composer elements from the interface.</p>\';
} ?>

<?php // validate our options
function plugin_rvce_options_validate($input) {
$options = get_option(\'plugin_options\');
return $options;
}

表单在前端看起来是正确的，但当我单击复选框并保存它时。。未保存设置。我可以看出，sandbox\\u checkbox\\u element\\u回调函数没有正确设置，但我无法找到正确的设置方法。

形式：

有人能帮我做到这一点吗？

// Going to add a conditional statement here to run this vc_remove_element function if the checkbox for Row is selected
vc_remove_element( "vc_row" ); // Row

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

function plugin_admin_settings_tab() {

    add_options_page(\'Remove Visual Composer Elements\', \'Remove Visual Composer Elements\', \'manage_options\', \'remove_visual_composer_elements\', \'plugin_rvce_options_page\');
    add_action(\'admin_init\', \'plugin_rvce_admin_init\');

}

?>

<?php function plugin_rvce_options_page() { ?>

<div>

    <form action="options.php" method="post">

        <?php settings_fields(\'plugin_options\'); ?>
        <?php do_settings_sections(\'plugin\'); ?>

        <?php submit_button(); ?>

    </form>

</div>

<?php } ?>

<?php

// ADMIN SETTINGS


function plugin_rvce_admin_init(){

register_setting( \'plugin_options\', \'plugin_options\' );
add_settings_section(\'plugin_main\', \'Visual Composer Element Settings\', \'plugin_rvce_section_text\', \'plugin\');
add_settings_field(\'Checkbox Element\', \'Row\', \'sandbox_checkbox_element_callback\', \'plugin\', \'plugin_main\' );

}

function sandbox_checkbox_element_callback() {

$options = get_option( \'plugin_options\' );

$checked = ( isset($options[\'checkbox_example\']) && $options[\'checkbox_example\'] == 1) ? 1 : 0;

$html = \'<input type="checkbox" id="checkbox_example" name="plugin_options[checkbox_example]" value="1"\' . checked( 1, $checked, false ) . \'/>\';
$html .= \'<label for="checkbox_example"> Hide</label>\';

echo $html;

}

?>

<?php function plugin_rvce_section_text() {
    echo \'<p>Remove Visual Composer elements from the interface.</p>\';
} ?>

<?php // validate our options
function plugin_rvce_options_validate($input) {
$options = get_option(\'plugin_options\');
return $options;
}