Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

WordPress How to Build a WordPress Plugin Building a WordPress Plugin Settings Page CRUD with the WordPress Options Table

Zander Curtis
Zander Curtis
10,634 Points
Posted by Zander Curtis
Zander Curtis
10,634 Points

Is the video wrong.

Is the video wrong? I couldn't get it to work unless I moved the "global $options;" inside the function. (Thanks for the help Erik!)

<?php

$options = array();

function my_plugin_options_page() {

global $options;

    if( !current_user_can( 'manage_options' ) ) {
        wp_die( 'You do not have sufficient permissions to access this page.' );
    }

    if( isset( $_POST['my_plugin_hidden_field'] ) ) {           
        $my_plugin_username = esc_html( $_POST['my_plugin_username'] );
    }

    require('includes/page-wrapper.php');
}

?>

Ronny Ewanek
Ronny Ewanek
4,385 Points
Ronny Ewanek
Ronny Ewanek
4,385 Points

You do need to call the the global $options; within the function.

I see that it's part of the lesson and the project download.

1 Answer

Tarik Hamilton
Tarik Hamilton
6,799 Points
Tarik Hamilton
Tarik Hamilton
6,799 Points

Functions cannot see variables that are written outside it. The global keyword lets you reference variables that are created outside of it.