PHP判断来访是搜索引擎蜘蛛还是普通用户的代码小结
发布:smiling 来源: PHP粉丝网 添加日期:2021-06-18 10:09:18 浏览: 评论:0
这篇文章主要介绍了PHP判断来访是搜索引擎蜘蛛还是普通用户的代码小结,多种方法总有一种适合你,防止搜索引擎蜘蛛拖死搜索引擎。
1、推荐的一种方法:php判断搜索引擎蜘蛛爬虫还是人为访问代码,摘自Discuz x3.2
- <?php
- function checkrobot($useragent=''){
- static $kw_spiders = array('bot', 'crawl', 'spider' ,'slurp', 'sohu-search', 'lycos', 'robozilla');
- static $kw_browsers = array('msie', 'netscape', 'opera', 'konqueror', 'mozilla');
- $useragent = strtolower(emptyempty($useragent) ? $_SERVER['HTTP_USER_AGENT'] : $useragent);
- if(strpos($useragent, 'http://') === false && dstrpos($useragent, $kw_browsers)) return false;
- if(dstrpos($useragent, $kw_spiders)) return true;
- return false;
- }
- function dstrpos($string, $arr, $returnvalue = false) {
- if(emptyempty($string)) return false;
- foreach((array)$arr as $v) {
- if(strpos($string, $v) !== false) {
- $return = $returnvalue ? $v : true;
- return $return;
- }
- }
- return false;
- }
- if(checkrobot()){
- echo '机器人爬虫';
- }else{
- echo '人';
- }
- ?>
实际应用中可以这样判断,直接不是搜索引擎才执行操作
- <?php
- if(!checkrobot()){
- //do something
- }
- ?>
2、第二种方法:
使用PHP实现蜘蛛访问日志统计
- $useragent = addslashes(strtolower($_SERVER['HTTP_USER_AGENT']));
- if (strpos($useragent, 'googlebot')!== false){$bot = 'Google';}
- elseif (strpos($useragent,'mediapartners-google') !== false){$bot = 'Google Adsense';}
- elseif (strpos($useragent,'baiduspider') !== false){$bot = 'Baidu';}
- elseif (strpos($useragent,'sogou spider') !== false){$bot = 'Sogou';}
- elseif (strpos($useragent,'sogou web') !== false){$bot = 'Sogou web';}
- elseif (strpos($useragent,'sosospider') !== false){$bot = 'SOSO';}
- elseif (strpos($useragent,'360spider') !== false){$bot = '360Spider';}
- elseif (strpos($useragent,'yahoo') !== false){$bot = 'Yahoo';}
- elseif (strpos($useragent,'msn') !== false){$bot = 'MSN';}
- elseif (strpos($useragent,'msnbot') !== false){$bot = 'msnbot';}
- elseif (strpos($useragent,'sohu') !== false){$bot = 'Sohu';}
- elseif (strpos($useragent,'yodaoBot') !== false){$bot = 'Yodao';}
- elseif (strpos($useragent,'twiceler') !== false){$bot = 'Twiceler';}
- elseif (strpos($useragent,'ia_archiver') !== false){$bot = 'Alexa_';}
- elseif (strpos($useragent,'iaarchiver') !== false){$bot = 'Alexa';}
- elseif (strpos($useragent,'slurp') !== false){$bot = '雅虎';}
- elseif (strpos($useragent,'bot') !== false){$bot = '其它蜘蛛';}
- if(isset($bot)){
- $fp = @fopen('bot.txt','a');
- fwrite($fp,date('Y-m-d H:i:s')."\t".$_SERVER["REMOTE_ADDR"]."\t".$bot."\t".'http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]."\r\n");
- fclose($fp);
- }
第三种方法:
我们可以通过HTTP_USER_AGENT来判断是否是蜘蛛,搜索引擎的蜘蛛都有自己的独特标志,下面列取了一部分。
- function is_crawler() {
- $userAgent = strtolower($_SERVER['HTTP_USER_AGENT']);
- $spiders = array(
- 'Googlebot', // Google 爬虫
- 'Baiduspider', // 百度爬虫
- 'Yahoo! Slurp', // 雅虎爬虫
- 'YodaoBot', // 有道爬虫
- 'msnbot' // Bing爬虫
- // 更多爬虫关键字
- );
- foreach ($spiders as $spider) {
- $spider = strtolower($spider);
- if (strpos($userAgent, $spider) !== false) {
- return true;
- }
- }
- return false;
- }
下面的php代码附带了更多的蜘蛛标识
- function isCrawler() {
- echo $agent= strtolower($_SERVER['HTTP_USER_AGENT']);
- if (!emptyempty($agent)) {
- $spiderSite= array(
- "TencentTraveler",
- "Baiduspider+",
- "BaiduGame",
- "Googlebot",
- "msnbot",
- "Sosospider+",
- "Sogou web spider",
- "ia_archiver",
- "Yahoo! Slurp",
- "YoudaoBot",
- "Yahoo Slurp",
- "MSNBot",
- "Java (Often spam bot)",
- "BaiDuSpider",
- "Voila",
- "Yandex bot",
- "BSpider",
- "twiceler",
- "Sogou Spider",
- "Speedy Spider",
- "Google AdSense",
- "Heritrix",
- "Python-urllib",
- "Alexa (IA Archiver)",
- "Ask",
- "Exabot",
- "Custo",
- "OutfoxBot/YodaoBot",
- "yacy",
- "SurveyBot",
- "legs",
- "lwp-trivial",
- "Nutch",
- "StackRambler",
- "The web archive (IA Archiver)",
- "Perl tool",
- "MJ12bot",
- "Netcraft",
- "MSIECrawler",
- "WGet tools",
- "larbin",
- "Fish search",
- );
- foreach($spiderSite as $val) {
- $str = strtolower($val);
- if (strpos($agent, $str) !== false) {
- return true;
- }
- }
- } else {
- return false;
- }
- }
- if (isCrawler()){
- echo "你好蜘蛛精!";
- }
- else{
- echo "你不是蜘蛛精啊!";
- }
第四种方法:
- <?php
- $flag = false;
- $tmp = $_SERVER['HTTP_USER_AGENT'];
- if(strpos($tmp, 'Googlebot') !== false){
- $flag = true;
- } else if(strpos($tmp, 'Baiduspider') >0){
- $flag = true;
- } else if(strpos($tmp, 'Yahoo! Slurp') !== false){
- $flag = true;
- } else if(strpos($tmp, 'msnbot') !== false){
- $flag = true;
- } else if(strpos($tmp, 'Sosospider') !== false){
- $flag = true;
- } else if(strpos($tmp, 'YodaoBot') !== false || strpos($tmp, 'OutfoxBot') !== false){
- $flag = true;
- } else if(strpos($tmp, 'Sogou web spider') !== false || strpos($tmp, 'Sogou Orion spider') !== false){
- $flag = true;
- } else if(strpos($tmp, 'fast-webcrawler') !== false){
- $flag = true;
- } else if(strpos($tmp, 'Gaisbot') !== false){
- $flag = true;
- } else if(strpos($tmp, 'ia_archiver') !== false){
- $flag = true;
- } else if(strpos($tmp, 'altavista') !== false){
- $flag = true;
- } else if(strpos($tmp, 'lycos_spider') !== false){
- $flag = true;
- } else if(strpos($tmp, 'Inktomi slurp') !== false){
- $flag = true;
- }
- if($flag == false){
- header("Location: https://www.phpfensi.com" . $_SERVER['REQUEST_URI']);
- // 自动转到https://www.phpfensi.com 对应的网页
- // $_SERVER['REQUEST_URI'] 为域名后面的路径
- // 或换成header("Location: https://www.phpfensi.com/abc/d.php");
- exit();
- }
- ?>
Tags: PHP搜索引擎蜘蛛
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