File "class-mailchimp-20250116135132.php"
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Charset: utf-8
<?php
/**
* Helper class for dealing with common API requests.
*/
class MC4WP_MailChimp
{
/**
* @var string
*/
public $error_code = '';
/**
* @var string
*/
public $error_message = '';
/**
*
* Sends a subscription request to the Mailchimp API
*
* @param string $list_id The list id to subscribe to
* @param string $email_address The email address to subscribe
* @param array $args
* @param bool $update_existing Update information if this email is already on list?
* @param bool $replace_interests Replace interest groupings, only if update_existing is true.
*
* @return object
* @throws Exception
*/
public function list_subscribe($list_id, $email_address, array $args = array(), $update_existing = false, $replace_interests = true)
{
$this->reset_error();
$default_args = array(
'status' => 'pending',
'email_address' => $email_address,
);
$existing_member_data = null;
// setup default args
$args = array_merge($default_args, $args);
$api = $this->get_api();
// first, check if subscriber is already on the given list
try {
$existing_member_data = $api->get_list_member($list_id, $email_address);
if ($existing_member_data->status === 'subscribed') {
// if we're not supposed to update, bail.
if (! $update_existing) {
$this->error_code = 214;
$this->error_message = 'That subscriber already exists.';
return null;
}
$args['status'] = 'subscribed';
// this key only exists if list actually has interests
if (isset($existing_member_data->interests)) {
$existing_interests = (array) $existing_member_data->interests;
// if replace, assume all existing interests disabled
if ($replace_interests) {
$existing_interests = array_fill_keys(array_keys($existing_interests), false);
}
$args['interests'] = array_replace($existing_interests, $args['interests']);
}
} elseif ($args['status'] === 'pending' && $existing_member_data->status === 'pending') {
// this ensures that a new double opt-in email is send out
$api->update_list_member(
$list_id,
$email_address,
array(
'status' => 'unsubscribed',
)
);
}
} catch (MC4WP_API_Resource_Not_Found_Exception $e) {
// subscriber does not exist (not an issue in this case)
} catch (MC4WP_API_Exception $e) {
// other errors.
$this->error_code = $e->getCode();
$this->error_message = $e;
return null;
}
try {
if ($existing_member_data) {
$data = $api->update_list_member($list_id, $email_address, $args);
$data->was_already_on_list = $existing_member_data->status === 'subscribed';
if (isset($args['tags']) && is_array($args['tags'])) {
$this->list_add_tags_to_subscriber($list_id, $data, $args['tags']);
}
} else {
$data = $api->add_new_list_member($list_id, $args);
$data->was_already_on_list = false;
}
} catch (MC4WP_API_Exception $e) {
$this->error_code = $e->getCode();
$this->error_message = $e;
return null;
}
return $data;
}
/**
* Format tags to send to Mailchimp.
*
* @param $mailchimp_tags array existent user tags
* @param $new_tags array new tags to add
*
* @return array
* @since 4.7.9
*/
private function merge_and_format_member_tags($mailchimp_tags, $new_tags)
{
$mailchimp_tags = array_map(
function ($tag) {
return $tag->name;
},
$mailchimp_tags
);
$tags = array_unique(array_merge($mailchimp_tags, $new_tags), SORT_REGULAR);
return array_map(
function ($tag) {
return array(
'name' => $tag,
'status' => 'active',
);
},
$tags
);
}
/**
* Post the tags on a list member.
*
* @param $mailchimp_list_id string The list id to subscribe to
* @param $mailchimp_member stdClass mailchimp user informations
* @param $new_tags array tags to add to the user
*
* @return bool
* @throws Exception
* @since 4.7.9
*/
private function list_add_tags_to_subscriber($mailchimp_list_id, $mailchimp_member, array $new_tags)
{
// do nothing if no tags given
if (count($new_tags) === 0) {
return true;
}
$api = $this->get_api();
$data = array(
'tags' => $this->merge_and_format_member_tags($mailchimp_member->tags, $new_tags),
);
try {
$api->update_list_member_tags($mailchimp_list_id, $mailchimp_member->email_address, $data);
} catch (MC4WP_API_Exception $ex) {
// fail silently
return false;
}
return true;
}
/**
* Changes the subscriber status to "unsubscribed"
*
* @param string $list_id
* @param string $email_address
*
* @return boolean
*/
public function list_unsubscribe($list_id, $email_address)
{
$this->reset_error();
try {
$this->get_api()->update_list_member($list_id, $email_address, array( 'status' => 'unsubscribed' ));
} catch (MC4WP_API_Resource_Not_Found_Exception $e) {
// if email wasn't even on the list: great.
return true;
} catch (MC4WP_API_Exception $e) {
$this->error_code = $e->getCode();
$this->error_message = $e;
return false;
}
return true;
}
/**
* Checks if an email address is on a given list with status "subscribed"
*
* @param string $list_id
* @param string $email_address
*
* @return boolean
* @throws Exception
*/
public function list_has_subscriber($list_id, $email_address)
{
try {
$data = $this->get_api()->get_list_member($list_id, $email_address);
} catch (MC4WP_API_Resource_Not_Found_Exception $e) {
return false;
}
return ! empty($data->id) && $data->status === 'subscribed';
}
/**
* @param string $list_id
*
* @return array
* @throws Exception
*/
public function get_list_merge_fields($list_id)
{
$transient_key = sprintf('mc4wp_list_%s_mf', $list_id);
$cached = get_transient($transient_key);
if (is_array($cached)) {
return $cached;
}
$api = $this->get_api();
try {
// fetch list merge fields
$merge_fields = $api->get_list_merge_fields(
$list_id,
array(
'count' => 100,
'fields' => 'merge_fields.name,merge_fields.tag,merge_fields.type,merge_fields.required,merge_fields.default_value,merge_fields.options,merge_fields.public',
)
);
} catch (MC4WP_API_Exception $e) {
return array();
}
// add EMAIL field
array_unshift(
$merge_fields,
(object) array(
'tag' => 'EMAIL',
'name' => __('Email address', 'mailchimp-for-wp'),
'required' => true,
'type' => 'email',
'options' => array(),
'public' => true,
)
);
set_transient($transient_key, $merge_fields, HOUR_IN_SECONDS * 24);
return $merge_fields;
}
/**
* @param string $list_id
*
* @return array
* @throws Exception
*/
public function get_list_interest_categories($list_id)
{
$transient_key = sprintf('mc4wp_list_%s_ic', $list_id);
$cached = get_transient($transient_key);
if (is_array($cached)) {
return $cached;
}
$api = $this->get_api();
try {
// fetch list interest categories
$interest_categories = $api->get_list_interest_categories(
$list_id,
array(
'count' => 100,
'fields' => 'categories.id,categories.title,categories.type',
)
);
} catch (MC4WP_API_Exception $e) {
return array();
}
foreach ($interest_categories as $interest_category) {
$interest_category->interests = array();
try {
// fetch groups for this interest
$interests_data = $api->get_list_interest_category_interests(
$list_id,
$interest_category->id,
array(
'count' => 100,
'fields' => 'interests.id,interests.name',
)
);
foreach ($interests_data as $interest_data) {
$interest_category->interests[ (string) $interest_data->id ] = $interest_data->name;
}
} catch (MC4WP_API_Exception $e) {
// ignore
}
}
set_transient($transient_key, $interest_categories, HOUR_IN_SECONDS * 24);
return $interest_categories;
}
/**
* Gets marketing permissions from a Mailchimp list.
* The list needs to have at least 1 member for this to work.
*
* @param string $list_id
*
* @return array
* @throws Exception
*/
public function get_list_marketing_permissions($list_id)
{
$transient_key = sprintf('mc4wp_list_%s_mp', $list_id);
$cached = get_transient($transient_key);
if (is_array($cached)) {
return $cached;
}
try {
$api = $this->get_api();
$data = $api->get_list_members(
$list_id,
array(
'fields' => array( 'members.marketing_permissions' ),
'count' => 1,
)
);
$marketing_permissions = array();
if (count($data->members) > 0 && $data->members[0]->marketing_permissions) {
foreach ($data->members[0]->marketing_permissions as $mp) {
$marketing_permissions[] = (object) array(
'marketing_permission_id' => $mp->marketing_permission_id,
'text' => $mp->text,
);
}
}
} catch (MC4WP_API_Exception $e) {
return array();
}
set_transient($transient_key, $marketing_permissions, HOUR_IN_SECONDS * 24);
return $marketing_permissions;
}
/**
* Get Mailchimp lists, from cache or remote API.
*
* @param boolean $skip_cache Whether to force a result by hitting Mailchimp API
*
* @return array
*/
public function get_lists($skip_cache = false)
{
$cache_key = 'mc4wp_mailchimp_lists';
$cached = get_transient($cache_key);
if (is_array($cached) && ! $skip_cache) {
return $cached;
}
$lists = $this->fetch_lists();
/**
* Filters the cache time for Mailchimp lists configuration, in seconds. Defaults to 24 hours.
*/
$cache_ttl = (int) apply_filters('mc4wp_lists_count_cache_time', HOUR_IN_SECONDS * 24);
// make sure cache ttl is not lower than 60 seconds
$cache_ttl = max(60, $cache_ttl);
set_transient($cache_key, $lists, $cache_ttl);
return $lists;
}
private function fetch_lists()
{
$client = $this->get_api()->get_client();
$lists_data = array();
$offset = 0;
$count = 10;
$exceptions_skipped = 0;
// increase total time limit to 3 minutes
@set_time_limit(180);
// increase HTTP timeout to 30s as MailChimp is super slow to calculate dynamic fields
add_filter(
'mc4wp_http_request_args',
function ($args) {
$args['timeout'] = 30;
return $args;
}
);
// collect all lists in separate HTTP requests
do {
try {
$data = $client->get(
'/lists',
array(
'count' => $count,
'offset' => $offset,
'fields' => 'total_items,lists.id,lists.name,lists.web_id,lists.stats.member_count,lists.marketing_permissions',
)
);
$lists_data = array_merge($lists_data, $data->lists);
$offset += $count;
} catch (MC4WP_API_Connection_Exception $e) {
// ignore timeout errors as this is likely due to mailchimp being slow to calculate the lists.stats.member_count property
// keep going so we can at least pull-in all other lists
$offset += $count;
++$exceptions_skipped;
// failsafe against infinite loop
// bail after 5 skipped exceptions
if ($exceptions_skipped >= 5) {
break;
}
continue;
} catch (MC4WP_API_Exception $e) {
// break on other errors, like "API key missing"etc.
break;
}
} while ($data->total_items >= $offset);
// key by list ID
$lists = array();
foreach ($lists_data as $list_data) {
$lists["$list_data->id"] = $list_data;
}
return $lists;
}
/**
* @param string $list_id
*
* @return object|null
*/
public function get_list($list_id)
{
$lists = $this->get_lists();
return isset($lists["$list_id"]) ? $lists["$list_id"] : null;
}
/**
* Fetch lists data from Mailchimp.
*/
public function refresh_lists()
{
$lists = $this->get_lists(true);
foreach ($lists as $list_id => $list) {
// delete cached merge fields
$transient_key = sprintf('mc4wp_list_%s_mf', $list_id);
delete_transient($transient_key);
// delete cached interest categories
$transient_key = sprintf('mc4wp_list_%s_ic', $list_id);
delete_transient($transient_key);
// delete cached marketing permissions
$transient_key = sprintf('mc4wp_list_%s_mp', $list_id);
delete_transient($transient_key);
}
return ! empty($lists);
}
/**
* Returns number of subscribers on given lists.
*
* @param array|string $list_ids Array of list ID's, or single string.
*
* @return int Total # subscribers for given lists.
*/
public function get_subscriber_count($list_ids)
{
// make sure we're getting an array
if (! is_array($list_ids)) {
$list_ids = array( $list_ids );
}
// if we got an empty array, return 0
if (empty($list_ids)) {
return 0;
}
$lists = $this->get_lists();
// start calculating subscribers count for all given list ID's combined
$count = 0;
foreach ($list_ids as $list_id) {
if (! isset($lists["$list_id"])) {
continue;
}
$list = $lists["$list_id"];
$count += $list->stats->member_count;
}
/**
* Filters the total subscriber_count for the given List ID's.
*
* @param string $count
* @param array $list_ids
*
* @since 2.0
*/
return apply_filters('mc4wp_subscriber_count', $count, $list_ids);
}
/**
* Resets error properties.
*/
public function reset_error()
{
$this->error_message = '';
$this->error_code = '';
}
/**
* @return bool
*/
public function has_error()
{
return ! empty($this->error_code);
}
/**
* @return string
*/
public function get_error_message()
{
return $this->error_message;
}
/**
* @return string
*/
public function get_error_code()
{
return $this->error_code;
}
/**
* @return MC4WP_API_V3
* @throws Exception
*/
private function get_api()
{
return mc4wp('api');
}
}