ip.php是什么？它有什么作用？

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php/** * 获取客户端IP地址 * @return string */public static function getIp(){ if (!empty($_SERVER['HTTP_CLIENT_IP'])) { return $_SERVER['HTTP_CLIENT_IP']; } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { return $_SERVER['HTTP_X_FORWARDED_FOR']; }}

ip.php

/** * 获取客服端ip * @return string */ public static function getIp() { if (!empty($_SERVER['HTTP_CLIENT_IP'])) { return $_SERVER['HTTP_CLIENT_IP']; } elseif (!empty($_SERVER['HTTP_X_FORVARDED_FOR'])) { return $_SERVER['HTTP_X_FORVARDED_FOR']; } elseif (!empty($_SERVER['REMOTE_ADDR'])) { return $_SERVER['REMOTE_ADDR']; } else { return "未知IP"; } }