Dynamically execute several remove_action() calls based on a multidimensional array

I'm trying dynamically execute a series of remove_action() function calls in my WordPress application based on a config array with a specific structure.

Hard-coded, the correct execution would be:

remove_action('genesis_after_header', 'genesis_do_nav');
remove_action('genesis_after_header', 'genesis_do_subnav');
remove_action('genesis_site_title', 'genesis_seo_site_title', 5);

I want to perform the same execution based on a multidimensional array like this:

$config = array(
	'remove_actions' => [
		'genesis_after_header' => [
			'genesis_do_nav',
		    'genesis_do_subnav'
		],
		'genesis_site_title' => [
			'genesis_seo_site_title' => 5
		],
	],
);

Here is my attempt to iterate the config array to execute the three remove_action() calls:

foreach ($config as $hook => $functions) {
	foreach ($functions as $function => $priority) {
		if (! is_null($priority)) {
			remove_action($hook, $function);
		} else {
			remove_action($hook, $function, $priority);
		}
	}
}

This isn't correctly accessing the values as intended.

Adjust your config structure so that $function always comes from a key and its value (which may be null) will be the $priority.

$config = [
    'remove_actions' => [
        'genesis_after_header' => [
            'genesis_do_nav' => null,
            'genesis_do_subnav' => null,
        ],
        'genesis_site_title' => [
            'genesis_seo_site_title' => 5
        ],
    ],
];

When accessing the data, the first loop must access $config['remove_actions']. Demo

foreach ($config['remove_actions'] as $hook => $functions) {
    foreach ($functions as $function => $priority) {
        if (is_null($priority)) {
            remove_action($hook, $function);
        } else {
            remove_action($hook, $function, $priority);
        }
    }
}