wordpress plugin : Call to undefined function add_menu_page()

Question

I am working on a WordPress plugin and I decided to use OOP instead of functional programming, however, I am receiving this weird error:

Error Message:

Call to undefined function add_menu_page()

While I am pretty sure everything is working as intended.

The Code:

class bdmin{

    public function __construct(){
        add_action('admin_menu', $this->create_admin_menu());
    }

    public function create_admin_menu(){
        // Create NEW top-level menu
        add_menu_page('bdmin Settings', 'bdmin Settings', 'administrator', __FILE__, array( &$this, 'create_admin_page'));

        // Register our Settings
        add_action( 'admin_init', $this->register_admin_settings() );
    }
}

and I initiate the code with $admin = new bdmin();

Jeremy Jared · Accepted Answer · 2011-08-15 23:55:12Z

3

This should remove the error:

<?php
    if(!empty($value['id'])) {
    class bdmin{
        public function __construct(){
            add_action('admin_menu', $this->create_admin_menu());
        }
        public function create_admin_menu(){
            // Create NEW top-level menu
            add_menu_page('bdmin Settings', 'bdmin Settings', 'administrator', __FILE__, array( &$this, 'create_admin_page'));
            // Register our Settings
            add_action( 'admin_init', $this->register_admin_settings() );
        }
    }
}
?>

answered Aug 15, 2011 at 23:55

Jeremy Jared

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Comments

Leigh · Accepted Answer · 2013-03-15 19:21:18Z

2

To solve this problem all I needed to do is invoke a function named add_action with these parameters.

add_action('admin_menu', array( &$this , 'create_admin_menu'));

edited Mar 15, 2013 at 19:21

Leigh

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answered Aug 16, 2011 at 8:31

SAFAD

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Comments

Chamilyan · Accepted Answer · 2011-08-15 17:39:06Z

0

Make sure you include the header file at the top so you can make WP function calls

<?php require('{correct_path}/wp-blog-header.php');

answered Aug 15, 2011 at 17:39

Chamilyan

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2 Comments

SAFAD Over a year ago

Included, yet the same error,another not, i am calling this class from another class constructor in another file in the same dir....

SAFAD Over a year ago

both, main file and the admin file but yet the same

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