create page in admin area Wordpress

add_action( 'admin_menu', function(){

	add_menu_page(  'Empty Page',	  // The text to be displayed in the title tags of the page when the menu is selected.
			'New Page',	  // The text to be used for the menu.
			'manage_options', // The capability required for this menu to be displayed to the user.
			'site-options',   // The slug name to refer to this menu by (should be unique for this menu).
			'add_my_setting', // The function to be called to output the content for this page.
			'',		  // The URL to the icon to be used for this menu. 
			4 );		  // The position in the menu order this one should appear.	

	register_setting( 'new-settings-group', 'new_setting' );		
} );

// The function to be called to output the content for this page.

function add_my_setting(){

	?>
		<div class="wrap">

			<h2><?php echo get_admin_page_title() ?></h2>

		</div>

		<form method="post" action="options.php">

			<div class="input_wrap">
				<label for="new_setting">new_setting name</label>
					<input id="new_setting" type="text" name="new_setting" value="<?php echo get_option('new_setting'); ?>" />
			</div>

			<?php settings_fields( 'new-settings-group' );?>
			<?php submit_button(); ?>
		</form>

	<?php
}