我正在从我的Total Widget Control 插件，因此可能会引发一两个错误。我不知道，如果有，请告诉我。这基本上就是我构建的所有东西所使用的小部件代码。

    if (!function_exists("register_multiwidget")):

/**
 * Register a widget
 * 
 * @param $widget
 */
function register_multiwidget( $widget = null )
{
    static $widgets;
    if (!isset($widgets))
    {
        $widgets = array();
    }

    if (is_null($widget)) return $widgets;
    if (!is_array($widget)) return false;

    $defaults = array(
        \'id\' => \'1\',
        \'title\' => \'Generic Widget\',
        \'classname\' => \'\',
        \'description\' => \'\',
        \'width\' => 200,
        \'height\' => 200,
        \'fields\' => array(),
    );

    $widgets[$widget[\'id\']] = wp_parse_args($widget, $defaults);

    return true;
}

/**
 * Get the registered widgets
 * 
 * @return array
 */
function get_registered_widgets()
{
    return register_multiwidget();
}

/**
 * Initialize the widgets
 * 
 * @return boolean
 */
function init_registered_widgets()
{
    //initialziing variables
    global $wp_widget_factory;
    $widgets = get_registered_widgets();

    //reasons to fail
    if (empty($widgets) || !is_array($widgets)) return false;

    foreach ($widgets as $id => $widget)
    {
        $wp_widget_factory->widgets[$id] =& new Multiple_Widget_Master( $widget );
    }

    return false;
}

/**
 * Multiple Widget Master Class
 * 
 * This class allows us to easily create qidgets without having to deal with the
 * mass of php code.
 * 
 * @author byrd
 * @since 1.3
 */
class Multiple_Widget_Master extends WP_Widget
{

/**
 * Constructor.
 * 
 * @param $widget
 */
function Multiple_Widget_Master( $widget )
{
    $this->widget = apply_filters(\'twc_widget_setup\', $widget);
    $widget_ops = array(
        \'classname\' => $this->widget[\'classname\'], 
        \'description\' => $this->widget[\'description\'] 
    );
    $this->WP_Widget($this->widget[\'id\'], $this->widget[\'title\'], $widget_ops);
}

/**
 * Display the Widget View
 * 
 * @example extract the args within the view template
 extract($args[1]); 

 * @param $args
 * @param $instance
 */
function widget($args, $instance)
{
    //initializing variables
    $widget = $this->widget;
    $widget[\'number\'] = $this->number;

    $args = array(
        \'sidebar\' => $args,
        \'widget\' => $widget,
        \'params\' => $instance,
    );

    $show_view = apply_filters(\'twc_widget_view\', $this->widget[\'show_view\'], $widget, $instance, $args);
            ob_start();
            require_once $show_view;
}

/**
 * Update from within the admin
 * 
 * @param $new_instance
 * @param $old_instance
 */
function update($new_instance, $old_instance)
{
    //initializing variables
    $new_instance = array_map(\'strip_tags\', $new_instance);
    $instance = wp_parse_args($new_instance, $old_instance);

    return $instance;
}

/**
 * Display the options form
 * 
 * @param $instance
 */
function form($instance)
{
    //reasons to fail
    if (empty($this->widget[\'fields\'])) return false;
    do_action(\'twc_widget_before\');

    $defaults = array(
        \'id\' => \'\',
        \'name\' => \'\',
        \'desc\' => \'\',
        \'type\' => \'\',
        \'options\' => \'\',
        \'std\' => \'\',
    );

    foreach ($this->widget[\'fields\'] as $field)
    {
        $field = wp_parse_args($field, $defaults);


        if (isset($field[\'id\']) && array_key_exists($field[\'id\'], $instance))
            $meta = attribute_escape($instance[$field[\'id\']]);

        if ($field[\'type\'] != \'custom\' && $field[\'type\'] != \'metabox\') 
        {
            echo \'<p><label for="\',$this->get_field_id($field[\'id\']),\'">\';
        }
        if (isset($field[\'name\']) && $field[\'name\']) echo $field[\'name\'],\':\';

        switch ($field[\'type\'])
        {
            case \'text\':
                echo \'<input type="text" name="\', $this->get_field_name($field[\'id\']), \'" id="\', $this->get_field_id($field[\'id\']), \'" value="\', $meta ? $meta : $field[\'std\'], \'" class="twc_text" />\', 
                \'<br/><span class="description">\', $field[\'desc\'], \'</span>\';
                break;
            case \'textarea\':
                echo \'<textarea class="twc_textarea" name="\', $this->get_field_name($field[\'id\']), \'" id="\', $this->get_field_id($field[\'id\']), \'" cols="60" rows="4" style="width:97%">\', $meta ? $meta : $field[\'std\'], \'</textarea>\', 
                \'<br/><span class="description">\', $field[\'desc\'], \'</span>\';
                break;
            case \'select\':
                echo \'<select class="twc_select" name="\', $this->get_field_name($field[\'id\']), \'" id="\', $this->get_field_id($field[\'id\']), \'">\';
                foreach ($field[\'options\'] as $option)
                {
                    echo \'<option\', $meta == $option ? \' selected="selected"\' : \'\', \'>\', $option, \'</option>\';
                }
                echo \'</select>\', 
                \'<br/><span class="description">\', $field[\'desc\'], \'</span>\';
                break;
            case \'radio\':
                foreach ($field[\'options\'] as $option)
                {
                    echo \'<input class="twc_radio" type="radio" name="\', $this->get_field_name($field[\'id\']), \'" value="\', $option[\'value\'], \'"\', $meta == $option[\'value\'] ? \' checked="checked"\' : \'\', \' />\', 
                    $option[\'name\'];
                }
                echo \'<br/><span class="description">\', $field[\'desc\'], \'</span>\';
                break;
            case \'checkbox\':
                echo \'<input type="hidden" name="\', $this->get_field_name($field[\'id\']), \'" id="\', $this->get_field_id($field[\'id\']), \'" /> \', 
                     \'<input class="twc_checkbox" type="checkbox" name="\', $this->get_field_name($field[\'id\']), \'" id="\', $this->get_field_id($field[\'id\']), \'"\', $meta ? \' checked="checked"\' : \'\', \' /> \', 
                \'<br/><span class="description">\', $field[\'desc\'], \'</span>\';
                break;
            case \'custom\':
                echo $field[\'std\'];
                break;
            case \'metabox\':
                if ((isset($_REQUEST[\'action\']) && $_REQUEST[\'action\'] == \'edit\')
                || (isset($_REQUEST[\'action\']) && $_REQUEST[\'action\'] == \'add\' && isset($_REQUEST[\'addnew\'])))
                echo \'</div>
                </div>
                <div id="query_view_params" class="postbox">
                    <div class="handlediv" title="Click to toggle"><br></div>
                    <h3 class="hndle">
                        <span>Query View Parameters</span>
                    </h3>
                    <div class="inside">\';
                break;
        }

        if ($field[\'type\'] != \'custom\' && $field[\'type\'] != \'metabox\') 
        {
            echo \'</label></p>\';
        }
    }
    do_action(\'twc_widget_after\');
    return;
}

}// ends Master Widget Class
endif;

    register_multiwidget(array(
\'id\' => \'first-custom-widget\',  // Must be slug compatible, and unique, it\'s used a lot
\'title\' => __(\'aaaFirst Widget\'),   
\'description\' => __(\'This is my description\'),  
\'classname\' => \'st-custom-wi\',  
\'show_view\' => \'path/to/my/widget_view_file.php\',
\'fields\' => array(
array(
    \'name\' => \'Text box\',
    \'desc\' => \'Enter something here\',
    \'id\' => \'text\',
    \'type\' => \'text\',
    \'std\' => \'Default value 1\'
),
array(
    \'type\' => \'custom\',
    \'std\' => \'<hr/>\'
),
array(
    \'name\' => \'Textarea\',
    \'desc\' => \'Enter big text here\',
    \'id\' => \'textarea\',
    \'type\' => \'textarea\',
    \'std\' => \'Default value 2\'

),
array(
    \'name\' => \'Select box\',
    \'id\' => \'select\',
    \'type\' => \'select\',
    \'options\' => array(\'Option 1\', \'Option 2\', \'Option 3\')
),
array(
    \'name\' => \'Radio\',
    \'id\' => \'radio\',
    \'type\' => \'radio\',
    \'options\' => array(
    array(\'name\' => \'Name 1\', \'value\' => \'Value 1\'),
    array(\'name\' => \'Name 2\', \'value\' => \'Value 2\')
    )
),
array(
    \'name\' => \'Checkbox\',
    \'id\' => \'checkbox\',
    \'type\' => \'checkbox\'
),

)
    ));

最后需要做的是将小部件html粘贴到新的文件路径/到/我的/小部件\\u view\\u文件中。php

在此小部件视图文件的顶部添加以下代码：<?php extract($args[1]); ?> 这将分离出三个变量供您使用：

1. $侧边栏
3. $小部件
5. $参数

这个小部件将所有可能需要的页脚脚本排队，但它还设置了一个钩子wp_print_footer_scripts 这将在打印脚本之前注销脚本，除非在打印小部件时更改数组。

class WPSE16208_Widget extends WP_Widget
{
    // Key is script handle, value is boolean:
    // true if it should be printed, false otherwise
    protected $scripts = array();

    public function __construct()
    {
        parent::__construct( \'wpse16208\', \'WPSE 16208 Widget\' );

        wp_enqueue_script(
            \'wpse16208_a\',
            plugins_url( \'a.js\', __FILE__ ),
            array(),
            false,
            true
        );
        $this->scripts[\'wpse16208_a\'] = false;
        wp_enqueue_script(
            \'wpse16208_b\',
            plugins_url( \'b.js\', __FILE__ ),
            array(),
            false,
            true
        );
        $this->scripts[\'wpse16208_b\'] = false;

        add_action( \'wp_print_footer_scripts\', array( &$this, \'remove_scripts\' ) );
    }

    public function widget()
    {
        echo \'My widget\';

        $this->scripts[\'wpse16208_a\'] = true;
    }

    public function remove_scripts()
    {
        foreach ( $this->scripts as $script => $keep ) {
            if ( ! $keep ) {
                // It seems dequeue is not "powerful" enough, you really need to deregister it
                wp_deregister_script( $script );
            }
        }
    }
}

您是否希望在使用小部件时使用纯脚本触发器？

您可以扩展WP_Widget 类并将init内容添加到构造函数中，或重载widget() 方法使用修改后的代码。E、 g。

class WPSE_16208_Widget extends WP_Widget {
    function __construct( $id_base = false, $name, $widget_options = array(), $control_options = array() ) {
        parent::__construct($id_base, $name, $widget_options, $control_options);

        // do your stuff on init
    }

    function widget() {
        // overload WP_Widget::widget()
    }
}