php判断访问来源5秒盾防御攻击代码

<?php
define('SYSTEM_ROOT', dirname(preg_replace('@\\(.*\\(.*$@', '', preg_replace('@\\(.*\\(.*$@', '', __FILE__))) . '/');
session_start();
date_default_timezone_set('Asia/Shanghai');
header('Content-Type: text/html; charset=UTF-8');
function getspider($useragent=''){
if(CC_Defender==2)return false;
if(!$useragent){$useragent = $_SERVER['HTTP_USER_AGENT'];}
$useragent=strtolower($useragent);
if (strpos($useragent, 'baiduspider') !== false){return 'baiduspider';}
if (strpos($useragent, 'googlebot') !== false){return 'googlebot';}
if (strpos($useragent, 'soso') !== false){return 'soso';}
if (strpos($useragent, 'bing') !== false){return 'bing';}
if (strpos($useragent, 'yahoo') !== false){return 'yahoo';}
if (strpos($

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转载自blog.csdn.net/mo3408/article/details/131771720