PHP based on Snoopy almost perfectly obtains website coding

PHP based on Snoopy almost perfectly obtains website coding
Used for php crawler, the accuracy of obtaining coding is 99.9%, there are still some parts that cannot be obtained, please help to improve it.
Code source: Zhanyun.com www.siteyun.com
First you need to download Snoopy.class.php online
Calling method: echo $go->getCharset(); ?>

[code]url=$url; } //打开网站 private function open($url) { if($this->request!==null) { if($this->request->status==200) { return true; } else { return false; } } else { $this->request=new Snoopy(); $this->request->fetch($url); if($this->request->status==200) { $this->request->results=strtolower($this->request->results); $charset=$this->getCharset(); if($charset!="utf-8") { if($charset=="windows-1252") { $this->request->results=$this->uni_decode($this->request->results); } else { $this->request->results=mb_convert_encoding($this->request->results,"UTF-8",$charset); } } return true; } else { return false; } } } //获取网站title,keywords,description public function getWebinfo() { $info=array( 'title'=>'', 'keywords'=>'', 'desc'=>'', 'ip'=>'' ); if(!$this->open($this->url)){return $info;exit;} // print_r($this->request->results);exit; preg_match('//si', $this->request->results, $titlematch ); if (isset($titlematch) && is_array($titlematch) && count($titlematch) > 0) { $info['title'] = strip_tags($titlematch[1]); } preg_match_all('/"]*)"?[s]*' . 'content="?([^>"]*)"?[s]*[/]?[s]*>/si', $this->request->results, $match); $ft=0; foreach($match[1] as $mt) { if($mt=="keywords" || $mt=="description") { $ft=1; } } if($ft==0) { preg_match_all('/"]*)"?[s]*name="?' . '([^>"]*)"?[s]*[/]?[s]*>/si', $this->request->results, $match); if (isset($match) && is_array($match) && count($match) == 3) { $originals = $match[0]; $names = $match[2]; $values = $match[1]; if (count($originals) == count($names) && count($names) == count($values)) { $metaTags = array(); for ($i=0, $limiti=count($names); $i htmlentities($originals[$i]), 'value' => $values[$i] ); } } } } else { if (isset($match) && is_array($match) && count($match) == 3) { $originals = $match[0]; $names = $match[1]; $values = $match[2]; if (count($originals) == count($names) && count($names) == count($values)) { $metaTags = array(); for ($i=0, $limiti=count($names); $i htmlentities($originals[$i]), 'value' => $values[$i] ); } } } }$result = array ( 'metaTags' => $metaTags ); if(isset($result['metaTags']['keywords']['value'])) { $info['keywords']=$result['metaTags']['keywords']['value']; } else { $info['keywords']=""; } if(isset($result['metaTags']['description']['value'])) { $info['desc']=$result['metaTags']['description']['value']; } else { $info['desc']=""; } $domain=preg_replace('/http:///si', '', $this->url); $ip=@gethostbyname($domain); $ip_arr=explode(".", $ip); if(count($ip_arr)==4) { $info['ip']=$ip; } return $info; } public function t($string,$o) { for($i=0;$iopen($this->url)){return false;exit;} //首先从html获取编码 preg_match("/request->results,$temp) ? strtolower($temp[1]):""; if($temp[1]!="") { if(in_array($temp[1], $this->charset_arr)) { if($temp[1]=="gb2312") { $tmp_charset=$this->t($this->request->results,$temp[1]); if($tmp_charset==$temp[1]) { return $temp[1]; } } else { return $temp[1]; } } } if(!empty($this->request->headers)) { //从header中获取编码 $hstr=strtolower(implode("