get member information is logged in

[oc1ober]

Hello ... Please ask how to get the member information (Username) is logged in into an input of the Form, Can you help me with ... Thank you

[oc1ober]

I use the Code to get the name of the User to login:

function show_loggedin_function( $atts ) {
	global $current_user, $user_login;
      	get_currentuserinfo();
	add_filter('widget_text', 'do_shortcode');
	if ($user_login) 
		return 'Welcome ' . $current_user->display_name . '!';
	else
		return '<a href="' . wp_login_url() . ' ">Login</a>';
}
add_shortcode( 'show_loggedin_as', 'show_loggedin_function' );

- It works well when inserting into widgets or posts in the form [show_loggedin_as]
- But when I insert it into Input in the Form, it doesn't work:

<input name="user" id="u1" type="text" class="field-long" value="[show_loggedin_as]" autocomplete="off"  required="">

Thanks for watching for me with…Thank you.