protected function count_str($delimiter, $string)
{
if (defined('STRICT_TYPES') && CAMEL_CASE == '1') {
return (int) self::parameters(['delimiter' => DT::STRING, 'string' => DT::TEXT])->call(__FUNCTION__)->with($delimiter, $string)->returning(DT::UINT16);
} else {
return (int) count_str($delimiter, $string);
}
}
/**
* 验证用户名是否只包含字母，数字，下划线，中文
* @param string $username 要验证的用户名
* @return boolean
*/
function is_username($username)
{
$return = array('status' => true, 'msg' => '用户名');
$username_len = count_str($username);
if ($username_len < 2 || $username_len > 12) {
$return['status'] = false;
$return['msg'] .= '在2 - 12字符之间，';
}
if (!preg_match('/^[0-9a-zA-Z_\\x{4e00}-\\x{9fa5}]+$/u', $username)) {
$return['status'] = false;
$return['msg'] .= '只能包含字母、数字、下划线、中文';
}
return $return;
}
