wp_footer hook running twice

Question

I have created a widget that have to run some code using the wp_footer hook as well. But if you extend the WP_Widget, the wp_footer runs twice! Has someone already past for the same issue?

Here is an example:

/*
Plugin Name: Test
Description: Test Plugin by Romulo De Lazzari
Version: 1.0
Author: Romulo De Lazzari
*/

new Test();

class Test extends WP_Widget{

    public function __construct(){

        parent::__construct('test-widget', 'Test Widget');      

        add_action('widgets_init', array($this, 'register_my_widget'));
        add_action('wp_footer', array($this, 'do_something'));
    }

    public function register_my_widget(){
        return register_widget("Test");
    }

    public function do_something(){
        echo "<p>Hello! This is a test!</p>";
    }

    public function widget($args, $instance) {

    }

    public function form($instance){

    }

    public function update($new_instance, $old_instance){

    }

}

The method do_something() is running twice here, if I take off the "Widget part" it runs well. Could someone help me?

Thanks in advance, Romulo

Answer 1

That code doesn't look like it conforms to the current Widgets API. Perhaps your problem is related?

First potential issue: your class test should be plugin-slug-test, in order to avoid naming conflicts.

Second potential issue: the only functions inside of your WP_Widget extending class should be:

• function plugin-slug-test() {}
• function widget( $args, $instance ) {}
• function update( $new_instance, $old_instance ) {}
• function form( $instance ) {}

You need to move your add_action() calls outside of your Widget class.

Third potential issue: why do you declare all of your Widget class functions to be public?

Fourth potential issue: I don't think you need to declare new Test(); for a Widget class.