• Step 1: call add_action 'admin_menu'
• Step 2: create custom function for the new link

Step 1: call add_action 'admin_menu'

add_action( 'admin_menu', 'register_example_custom_menu_link_menu_page' );

• Method 1: by global $current_user for the current user logged in
• Method 2: check if an user has a specific role by SQL query

Method 1: by global $current_user for the current user logged in

/**
 * Checks if current user has administrator role
 * @return boolean
 */

Summary

• Step 1: make some string in your plugin translatable
• Step 2: load the function with add_action 'init' in your plugin
• Step 3: create folder and file for translations inside your plugin
• Step 4: update your language files with poedit

In the example, we are going to translate the plugin to Spanish.

• The objective is to save form data with file inputs and AJAX.
• Step 1: process files before the rest of data, save them to disk and database.
• Step 2: process the rest of field inputs, validate and the save them all.

HTML

<div id="wrapper">