CURL抓取网页内容并用正则提取。

setopt =array(
    CURLOPT_URL => "$url",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_FOLLOWLOCATION => true,
);
    }
    function exec(){
        $ch = curl_init();
        curl_setopt_array($ch,$this->setopt);
        $this->data = curl_exec($ch);
        curl_close($ch);
        return $this->data;
    }
};
/*
 * 抓取回来的网页进行正则查找
 * id是按ID查找内容
 * tagName是标签查找
 * className按类名查找*/
class Preg{
    function id($data,$id){
        preg_match('/<(.*)\s*id=.*('.$id.').*>\s*(.*)\s*<\/(.*)>/',$data,$str);
        return $str[0];
    }
    
    function tagName($data,$tag){
        preg_match('/<'.$tag.'.*>\s*(.*)\s*<\/'.$tag.'>/',$data,$str);
        return $str[1];
    }
    
    function className($data,$class){
        preg_match('/<(.*)\s*class=.*('.$class.').*>\s*(.*)\s*<\/(.*)>/',$data,$str);
        return $str[0];
    }
    
}

$c = new Curl('www.corker.cc');
$data = $c->exec();
$data = @iconv("gb2312", "utf-8",$data);
$preg = new Preg();
echo $preg->tagName($data,'title');

?>