wordpress免费虚拟主机

<?php
/*
Plugin Name: Custom Widget
Description: Adds a custom widget to the sidebar.
Version: 1.0
Author: Your Name
*/

// 注册自定义小部件
function custom_widget_init() {
    register_widget( 'Custom_Widget' );
}
add_action( 'widgets_init', 'custom_widget_init' );

// 自定义小部件类
class Custom_Widget extends WP_Widget {
    public function __construct() {
        parent::__construct(
            'custom_widget',
            'Custom Widget',
            array( 'description' => 'A custom widget for displaying additional information.' )
        );
    }

    public function widget( $args, $instance ) {
        echo $args['before_widget'];
        if ( ! empty( $instance['title'] ) ) {
            echo $args['before_title'] . apply_filters( 'widget_title', $instance['title'] ) . $args['after_title'];
        }
        echo '<p>' . apply_filters( 'widget_text', $instance['text'] ) . '</p>';
        echo $args['after_widget'];
    }

    public function form( $instance ) {
        $title = ! empty( $instance['title'] ) ? $instance['title'] : '';
        $text = ! empty( $instance['text'] ) ? $instance['text'] : '';
        ?>
        <p>
            <label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>">Title:</label>
            <input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>">
        </p>
        <p>
            <label for="<?php echo esc_attr( $this->get_field_id( 'text' ) ); ?>">Text:</label>
            <textarea class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'text' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'text' ) ); ?>"><?php echo esc_attr( $text ); ?></textarea>
        </p>
        <?php
    }

    public function update( $new_instance, $old_instance ) {
        $instance = array();
        $instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';
        $instance['text'] = ( ! empty( $new_instance['text'] ) ) ? strip_tags( $new_instance['text'] ) : '';
        return $instance;
    }
}