时间：2021-07-01 10:21:17 帮助过：5人阅读
namespace Xuyaoxiang; class Snoopy { private $pattern_array=array( 'title'=>'/(\s*.*)<\/title>/i', 'description'=>'/<meta +name="[d|D]escription" +content="(.*)" +\/>/', 'charset'=>'/charset=\"?([\w-]+)\"?/i', ); public $url; public $target_code="utf-8"; //目标编码 public $user_agent='Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36'; //模拟浏览器头部数据 function __construct($url) { $this->url=$url; } public function set_pattern($key,$val) { if(isset($this->pattern_array[$key])){return false;} $this->pattern_array[$key]=$val; } //只能够添加规则,不能更改原有的规则 function get_pege_content($pattern_key) { if($pattern_key=='') { return false; } $curl=curl_init(); // 设置你需要抓取的URL curl_setopt($curl, CURLOPT_URL, $this->url); // 设置header curl_setopt($curl, CURLOPT_HEADER, 0); // 设置cURL 参数，要求结果保存到字符串中还是</pre>输出到屏幕上。 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_USERAGENT, $this->user_agent); // 运行cURL，请求网页 $data = curl_exec($curl); if($data==false){return false;} preg_match($this->pattern_array['charset'],$data,$reg_charset); //获取网页编码 $page_charset=strtolower($reg_charset[1]); $charset==$this->target_code || $data=mb_convert_encoding($data,$this->target_code,$page_charset); //如果不符合你设置的编码,进行转码 preg_match($this->pattern_array[$pattern_key],$data,$content); // 关闭URL请求 curl_close($curl); return trim($content[1]); }} $snoopy=new snoopy("http://www.qq.com"); $title=$snoopy->get_pege_content('title'); print_r($title);</pre> </div>
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