Creating custom widget in wordpress

Question

I am trying to create a simple plugin widget for wordpress, like this

<?php

// The widget class
class My_Custom_Widget extends WP_Widget {

    // Main constructor
    public function __construct() {
        parent::__construct(
            'my_custom_widget',
            __( 'My Custom Widget', 'text_domain' ),
            array(
                'customize_selective_refresh' => true,
            )
        );
    }

    // The widget form (for the backend )
    public function form( $instance) {}

    // Update widget settings
    public function update($new_instance, $old_instance) {}

    public function helloWorld(){
        echo 'Hello World';
    }

    // Display the widget
    public function widget( $args, $instance ) {
        helloWorld();
    }
}

// Register the widget
function my_register_custom_widget() {
    register_widget( 'My_Custom_Widget' );
}
add_action( 'widgets_init', 'my_register_custom_widget' );

You will see that inside function widget i have call to function helloWorld(), but i got error when displaying widget like this

Fatal error: Call to undefined function helloWorld() in /wp-content/plugins/my-widget-plugin/my-widget-plugin.php on line 38

Why I can not call function inside function?

Which helloWorld() it'll call?

Swatantra Kumar
– Swatantra Kumar

2020-06-08 10:20:01 +00:00
Commented Jun 8, 2020 at 10:20 — Swatantra Kumar
– Swatantra Kumar, Commented Jun 8, 2020 at 10:20

Dmitry Leiko · Accepted Answer · 2020-06-08 10:16:42Z

2

You forget add $this:

    // Display the widget
    public function widget( $args, $instance ) {
        $this->helloWorld();
    }

Hope help you.

answered Jun 8, 2020 at 10:16

Dmitry Leiko

4,4923 gold badges29 silver badges48 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Creating custom widget in wordpress

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related