Add filter support for array in function

Filteranrop

function mg_add_nav_item( $navs ) {
	$new_nav_items = [
		'navitem',
		'navitem2',
		'navitem3',
	];

	$navs = array_merge( $new_nav_items, $navs );
 
	return $navs;
}

add_filter('mg_filter_nav', 'mg_add_nav_item');

Grundfunktion

function render_nav() {
	$navs = ['dinarray' => 'här'];
 
	if ( has_filter( 'mg_filter_nav' ) ) {
		$navs = apply_filters('mg_filter_nav', $navs);
	}
  
	foreach ( $navs as $key => $nav ) {
		echo $nav;
  	}
}