获取用户头像，可以通过
$avatar_html = get_avatar( $email );
获取到头像的html
/**
* Retrieve the avatar url for a user who provided a user ID or email address.
*
* {@see get_avatar()} doesn't return just the URL, so we have to
* extract it here.
*
* @param string $email Email address.
* @return string URL for the user's avatar, empty string otherwise.
*/
function json_get_avatar_url( $avatar_html ) { // Strip the avatar url from the get_avatar img tag.
preg_match('/src=["|\'](.+)[\&|"|\']/U', $avatar_html, $matches); if ( isset( $matches[1] ) && ! empty( $matches[1] ) ) {
return esc_url_raw( $matches[1] );
} return '';
}