2.3/actions_2friends_2add_8php_source.html

 <?php
 // Get the GUID of the user to friend
 $friend_guid = (int) get_input('friend');

 $friend = get_user($friend_guid);
 if (!$friend) {
     return elgg_error_response(elgg_echo('error:missing_data'));
 }

 $user = elgg_get_logged_in_user_entity();
 if ($user->isFriendsWith($friend->guid)) {
     return elgg_ok_response('', elgg_echo('friends:add:duplicate', [$friend->getDisplayName()]));
 }

 if (!elgg_get_logged_in_user_entity()->addFriend($friend->guid, true)) {
     return elgg_error_response(elgg_echo('friends:add:failure', [$friend->getDisplayName()]));
 }

 return elgg_ok_response('', elgg_echo('friends:add:successful', [$friend->getDisplayName()]));
elgg_echo
elgg_echo($message_key, $args=array(), $language="")
Given a message key, returns an appropriately translated full-text string.
Definition: languages.php:21

$friend
$friend
Definition: add.php:12

get_user
get_user($guid)
Get a user object from a GUID.
Definition: users.php:87

get_input
get_input($variable, $default=null, $filter_result=true)
Get some input from variables passed submitted through GET or POST.
Definition: input.php:27

elgg_error_response
elgg_error_response($error= '', $forward_url=REFERRER, $status_code=ELGG_HTTP_OK)
Prepare an error response to be returned by a page or an action handler.
Definition: pagehandler.php:333

$friend_guid
$friend_guid
Definition: add.php:10

$user
if(!$friend) $user
Definition: add.php:17

elgg_ok_response
elgg_ok_response($content= '', $message= '', $forward_url=null, $status_code=ELGG_HTTP_OK)
Prepares a successful response to be returned by a page or an action handler.
Definition: pagehandler.php:310

elgg_get_logged_in_user_entity
elgg_get_logged_in_user_entity()
Return the current logged in user, or null if no user is logged in.
Definition: sessions.php:32