WP - Advanced Custom Fields : acf_add_options_page() does not exist

Question

I am trying to set up Options Page with Advanced Custom Fields in WP.

What I have in functions.php file :

if( function_exists('acf_add_options_page') ) {

acf_add_options_page();

acf_add_options_sub_page('General');
acf_add_options_sub_page('Header');
acf_add_options_sub_page('Footer');

}

The problem is that function_exists('acf_add_options_page') returns false.

Seems like that function does not exist, however I am using the latest version of ACF.

When I try to use acf_add_options_page();:

I get the following Uncaught Error: Call to undefined function acf_add_options_page()

When I avoid using acf_add_options_page();, using only acf_add_options_sub_page():

I get the following Warning(s)

Warning: Illegal string offset 'slug' in C:\xampp\htdocs\wp-content\plugins\acf-options-page\acf-options-page.php on line 230

Warning: Illegal string offset 'title' in C:\xampp\htdocs\wp-content\plugins\acf-options-page\acf-options-page.php on line 230

p.s. I am using an hook (tried with init, plugins_loaded and admin_init) on functions.php to load the functions :

add_action('init', 'my_init_function');

    function my_init_function() {

    if( function_exists('acf_add_options_page') ) {

        acf_add_options_page();

        acf_add_options_sub_page('General');
        acf_add_options_sub_page('Header');
        acf_add_options_sub_page('Footer');


    }

    }

Answer 1

I was having a similar issue, however I was running the code as part of a must-use plugin.

The issue there is that acf plugins are loaded after mu-plugins, so the function did not exist yet.

I used the plugins_loaded action to run it right after all the plugins were loaded.

Here is my code:

// Add Options Page
function add_my_options_page() {
  if( function_exists('acf_add_options_page') ) {
    acf_add_options_page();
  }
}
add_action( 'plugins_loaded', 'add_my_options_page' );