php过滤微信昵称中的表情

function filterNickname($nickname)

{
    $nickname = preg_replace('/[\x{1F600}-\x{1F64F}]/u', '', $nickname);

    $nickname = preg_replace('/[\x{1F300}-\x{1F5FF}]/u', '', $nickname);

    $nickname = preg_replace('/[\x{1F680}-\x{1F6FF}]/u', '', $nickname);

    $nickname = preg_replace('/[\x{2600}-\x{26FF}]/u', '', $nickname);

    $nickname = preg_replace('/[\x{2700}-\x{27BF}]/u', '', $nickname);

    $nickname = str_replace(array('"','\''), '', $nickname);

    return addslashes(trim($nickname));
}