wordpress add option for template (in admin)

options_template.php

<?php


//for in file functions.php of theme or create new plugin add
//include_once ("admin-page-more/options_template.php");

function myplugin_register_settings() {
   add_option( 'myplugin_option_name', 'This is my option value.');
   add_option( 'myplugin_option_name_01', '');
   add_option( 'myplugin_option_email_1', '');
   register_setting( 'myplugin_options_group', 'myplugin_option_name', 'myplugin_callback' );
   register_setting( 'myplugin_options_group', 'myplugin_option_name_01', 'myplugin_callback' );
   register_setting( 'myplugin_options_group', 'myplugin_option_email_1', 'myplugin_callback' );
}
add_action( 'admin_init', 'myplugin_register_settings' );


function myplugin_register_options_page() {
  add_options_page('Page Title', 'Plugin Menu', 'manage_options', 'myplugin', 'myplugin_options_page');
}
add_action('admin_menu', 'myplugin_register_options_page');


?>

<?php function myplugin_options_page()
{
?>
  <div>
  <?php screen_icon(); ?>
  <h2>My Plugin Page Title</h2>
  <form method="post" action="options.php">
  <?php settings_fields( 'myplugin_options_group' ); ?>
  <h3>This is my option</h3>
  <p>Some text here.</p>
  <table>
  <tr valign="top">
  <th scope="row"><label for="myplugin_option_name">Label</label></th>
  <td><input type="text" id="myplugin_option_name" name="myplugin_option_name" value="<?php echo get_option('myplugin_option_name'); ?>" /></td>
  <th scope="row"><label for="myplugin_option_name_01">Label</label></th>
  <td><input type="text" id="myplugin_option_name_01" name="myplugin_option_name_01" value="<?php echo get_option('myplugin_option_name_01'); ?>" /></td>
  </tr>
  </table>
  <?php
	$privacy_policy_page_id     =  get_option( 'myplugin_option_email_1' );
	var_dump($privacy_policy_page_id );
	wp_dropdown_pages(
		array(
			'name'              => 'myplugin_option_email_1',
			'show_option_none'  => __( '&mdash; Select &mdash;' ),
			'option_none_value' => '0',
			'selected'          => $privacy_policy_page_id,
			'post_status'       => array( 'draft', 'publish' ),
		)
	);
?>
  <?php  submit_button(); ?>
  </form>
  </div>
<?php
} ?>