//--- Adds updated Socila Networks to User Admin

function extra_contact_info($contactmethods) {
unset($contactmethods['aim']);
unset($contactmethods['yim']);
unset($contactmethods['jabber']);
$contactmethods['facebook'] = 'Facebook';
$contactmethods['twitter'] = 'Twitter';
$contactmethods['linkedin'] = 'LinkedIn';
					
return $contactmethods;
}
add_filter('user_contactmethods', 'extra_contact_info');

Add twitter ect to wordpress user admin

PHP