some more little codes for restrictions and registrations

plugins/fipfcard_plugin/php/admin_menu/example_menu.php

@@ -0,0 +1,82 @@
+<?php
+
+/*
+* it means someone outside wp is accessing the file, in this case kill it.
+*/
+if (!defined('ABSPATH')) {
+	die('You can not access this file!');
+}
+
+
+
+
+/*
+* menu plugin
+*/
+function fipfcard_plugin_menu()
+{
+	add_menu_page
+	(
+		'fipf_card',							// webpage title
+		'fipf_card',							// menu title
+		'manage_options',					// capability
+		'fipfcard-plugin',				// menu_slug
+		'fipfcard_plugin_content'	// callback function to display page content
+	);
+}
+add_action('admin_menu', 'fipfcard_plugin_menu');
+
+
+
+/**
+ * it means someone outside wp is accessing the file, in this case kill it.
+ */
+if (!defined('ABSPATH')) {
+	die('You can not access this file!');
+}
+
+function fipfcard_plugin_content() {
+	$fipfcard = new PLGNTLS_class();
+
+	$my_css = '
+		#mytext {
+			background-color: lightblue;
+		}
+		#mytext_2 {
+			background-color: lightgreen;
+		}
+	';
+	echo $fipfcard->add_to_front( array(
+		array("js/menu/example_menu.js", 'type'=>'module'),
+		"css/menu/menu.css",
+		"PLGNTLS_menu_css" => array('css'=>$my_css),
+		"js/menu/example_menu_2.js",
+		"html/menu/example_menu.html",
+	));
+}
+
+
+/*
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ajax
+- https://stackoverflow.com/questions/43557755/how-to-call-ajax-in-wordpress
+- in `add_action( 'wp_ajax_get_data', 'my_ajax_handler' );`
+  the 'wp_ajax_get_data' is a hooks formated as 'wp_ajax_{$action}'
+	the `$action` param is passed in the data object of the ajax call
+- to access the content of the data object properties of the ajax call :
+  use $_POST['property_name']
+*/
+function fipfcard_menu_fetch_handler()
+{
+	return new WP_REST_Response('hello', 200);
+}
+function fipfcard_menu_endpoint()
+{
+	register_rest_route('plgntls', '/get_data', array(
+		'methods' => 'POST',
+		'callback' => 'fipfcard_menu_fetch_handler',
+	));
+};
+add_action('rest_api_init', 'fipfcard_menu_endpoint');
+
+?>