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WordPress How to Build a WordPress Plugin Building a WordPress Plugin Settings Page CRUD with the WordPress Options Table: Part 2

$options = get_option( "my_plugin_options" );

need help please

plugin.php
<?php


    $options = array();

    function my_plugin_options_page() {
        if( !current_user_can( 'manage_options' ) ) {
            wp_die( 'You do not have sufficient permissions to access this page.' );
        }

        global $options;

        if( isset( $_POST['my_plugin_hidden_field'] ) ) {
            $my_plugin_username = esc_html( $_POST['my_plugin_username'] );         
            $options['my_plugin_username'] = $my_plugin_username;
            $options['last_updated'] = time();
            update_option( 'my_plugin_options', $options );
      $options = get_option( "my_plugin_options" );

update_option( 'my_plugin_options', $options );
        }


        require('includes/page-wrapper.php');

    }


?>