function get_avatar($id_or_email, $size = '96', $default = '', $alt = false)
{
if (!get_option('show_avatars')) {
return false;
}
if (false === $alt) {
$safe_alt = '';
} else {
$safe_alt = esc_attr($alt);
}
if (!is_numeric($size)) {
$size = '96';
}
$id = -1;
$email = '';
if (is_numeric($id_or_email)) {
$id = (int) $id_or_email;
$user = get_userdata($id);
if ($user) {
$email = $user->user_email;
}
} elseif (is_object($id_or_email)) {
// No avatar for pingbacks or trackbacks
/**
* Filter the list of allowed comment types for retrieving avatars.
*
* @since 3.0.0
*
* @param array $types An array of content types. Default only contains 'comment'.
*/
$allowed_comment_types = apply_filters('get_avatar_comment_types', array('comment'));
if (!empty($id_or_email->comment_type) && !in_array($id_or_email->comment_type, (array) $allowed_comment_types)) {
return false;
}
if (!empty($id_or_email->user_id)) {
$id = (int) $id_or_email->user_id;
$user = get_userdata($id);
if ($user) {
$email = $user->user_email;
}
}
if (!$email && !empty($id_or_email->comment_author_email)) {
$email = $id_or_email->comment_author_email;
}
} else {
$email = $id_or_email;
}
if (id == -1 | email == '' || is_admin()) {
if (empty($default)) {
$avatar_default = get_option('avatar_default');
if (empty($avatar_default)) {
$default = 'mystery';
} else {
$default = $avatar_default;
}
}
if (!empty($email)) {
$email_hash = md5(strtolower(trim($email)));
}
if (is_ssl()) {
$host = 'https://secure.gravatar.com';
} else {
if (!empty($email)) {
$host = sprintf("http://%d.gravatar.com", hexdec($email_hash[0]) % 2);
} else {
$host = 'http://0.gravatar.com';
}
}
if ('mystery' == $default) {
$default = "{$host}/avatar/ad516503a11cd5ca435acc9bb6523536?s={$size}";
} elseif ('blank' == $default) {
$default = $email ? 'blank' : includes_url('images/blank.gif');
} elseif (!empty($email) && 'gravatar_default' == $default) {
$default = '';
} elseif ('gravatar_default' == $default) {
$default = "{$host}/avatar/?s={$size}";
} elseif (empty($email)) {
$default = "{$host}/avatar/?d={$default}&s={$size}";
} elseif (strpos($default, 'http://') === 0) {
$default = add_query_arg('s', $size, $default);
}
if (!empty($email)) {
$out = "{$host}/avatar/";
$out .= $email_hash;
$out .= '?s=' . $size;
$out .= '&d=' . urlencode($default);
$rating = get_option('avatar_rating');
if (!empty($rating)) {
$out .= "&r={$rating}";
}
$out = str_replace('&', '&', esc_url($out));
$avatar = "<img alt='{$safe_alt}' src='{$out}' class='avatar avatar-{$size} photo' height='{$size}' width='{$size}' />";
} else {
$avatar = "<img alt='{$safe_alt}' src='{$default}' class='avatar avatar-{$size} photo avatar-default' height='{$size}' width='{$size}' />";
}
/**
* Filter the avatar to retrieve.
*
* @since 2.5.0
*
* @param string $avatar Image tag for the user's avatar.
* @param int|object|string $id_or_email A user ID, email address, or comment object.
* @param int $size Square avatar width and height in pixels to retrieve.
* @param string $alt Alternative text to use in the avatar image tag.
* Default empty.
*/
return apply_filters('get_avatar', $avatar, $id_or_email, $size, $default, $alt);
} else {
//get user's name from wordpress database
$username = get_userdata($id);
$username = $username->user_login;
//get user's information, from xenforo, by user's name
global $xf;
$user = $xf->getUserByName($username);
$avatar_url = XenForo_Template_Helper_Core::helperAvatarUrl($user, 's', null, true);
//home stretch!
$avatar_url = "<img alt='" . $id . "' src='" . $avatar_url . "' class='avatar avatar-" . $size . " photo avatar-default' height='" . $size . "' width='" . $size . "' />";
return $avatar_url;
}
}
