Filter WordPress admin side navigation menues

functions.php

function filter_admin_menues() {
		
		// If administrator then do nothing
		if (current_user_can('activate_plugins')) return;
		
		// Remove main menus
		$main_menus_to_stay = array(
			
			// Dashboard
			'index.php',
			
			// Edit
			'edit.php',
			
			// Media
			'upload.php'
		);

		// Remove sub menus
		$sub_menus_to_stay = array(
			
			// Dashboard
			'index.php' => ['index.php'],
			
			// Edit
			'edit.php' => ['edit.php', 'post-new.php'],
			
			// Media
			'upload.php' => ['upload.php', 'media-new.php'],
			
			
		);


		if (isset($GLOBALS['menu']) && is_array($GLOBALS['menu'])) {
			foreach ($GLOBALS['menu'] as $k => $main_menu_array) {				
				// Remove main menu
				if (!in_array($main_menu_array[2], $main_menus_to_stay)) {
					remove_menu_page($main_menu_array[2]);
				} else {
					
					// Remove submenu
					foreach ($GLOBALS['submenu'][$main_menu_array[2]] as $k => $sub_menu_array) {
						
						if (!in_array($sub_menu_array[2], $sub_menus_to_stay[$main_menu_array[2]])) {
							
							remove_submenu_page($main_menu_array[2], $sub_menu_array[2]);							
						}
					}
				}
			}
		}
	}

// Filter admin side navigation menues
add_action('admin_init',  'filter_admin_menues');