1，正則匹配中文字符：/^[\x{4e00}-\x{9fa5}]+$/u
? ?eg: preg_match("/^[\x{4e00}-\x{9fa5}]+$/u", $string);
2稽穆，PHP獲取用戶訪問真實(shí)IP地址
function getIP ()
{
????global $_SERVER;
? ? ?if (getenv('HTTP_CLIENT_IP')) {
????????$ip = getenv('HTTP_CLIENT_IP');
????} else if (getenv('HTTP_X_FORWARDED_FOR')) {
????????$ip = getenv('HTTP_X_FORWARDED_FOR');
????} else if (getenv('REMOTE_ADDR')) {
????????$ip = getenv('REMOTE_ADDR');
????} else {
????????$ip = $_SERVER['REMOTE_ADDR'];
????}
????return $ip;
}
