PHP判断来访是搜索引擎蜘蛛还是普通用户的代码小结
程序员文章站
2023-01-29 10:55:48
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
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');
$useragent = strtolower(empty($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, $returnvalue = false) {
if(empty($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 (!empty($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: //www.jb51.net" . $_server['request_uri']);
// 自动转到//www.jb51.net 对应的网页
// $_server['request_uri'] 为域名后面的路径
// 或换成header("location: //www.jb51.net/abc/d.php");
exit();
}
?>