Plugin côté admin

<?php
/**
 * Plugin Name: test
 * Plugin URI: test
 * Description: test
 * Version: Version 1.0.0
 * Author: test
 * Author URI:  test
 * License: GPL2 license
 */
 ?>
<?php
/** Step 2 (from text above). */
add_action( 'admin_menu', 'my_plugin_menu' );

/** Step 1. */
function my_plugin_menu() {
 add_options_page( 'My Plugin Options', 'Mon plugin test', 'manage_options', 'my-unique-identifier', 'my_plugin_options' );
}

/** Step 3. */a
function my_plugin_options() {
 if ( !current_user_can( 'manage_options' ) )  {
  wp_die( __( 'You do not have sufficient permissions to access this page.' ) );
 }
 ?>
 <table>
  <tr>
    <th>Firstname</th>
    <th>Lastname</th> 
    <th>Age</th>
  </tr>
  <tr>
    <td>Jill</td>
    <td>Smith</td>
    <td>50</td>
  </tr>
  <tr>
    <td>Eve</td>
    <td>Jackson</td>
    <td>94</td>
  </tr>
  <tr>
    <td>John</td>
    <td>Doe</td>
    <td>80</td>
  </tr>
</table>
<?php 
}
?>