献给所有想学习正则和采集的朋友

献给所有想学习正则和采集的朋友_PHP教程

WBOY

Freigeben： 2016-07-13 17:37:03

Original

797 Leute haben es durchsucht

function get_url_content($Url,$Method = c) {
    //引入需要的语言编码.如果没有, 就会默认为utf-8,不必担心.
    global $Charset;
    $Urlarr = parse_url($Url);
    //如果检测不出域名,就返回.
    if (!isset($Urlarr[host])) {
        return false;
    }
    //我们用智能方式定义header头倍信息.
    foreach (@getallheaders() as $key => $val){
        $key===Host && $val = $Urlarr[host];
        $key===Referer && $val =http://.$Urlarr[host];
        $str .= "$key:$val, ";
    }
    //虚拟来路.
    !eregi(Referer,$str) && $str .="Referer:http://{$Urlarr[host]}, ";
    //经过修正, 基本上, 来路也是那个站, 主机也是Url站点.
    $Header = array(trim($str));
    //下面仅仅是选择用哪个程序来采集.
    if($Method === f&&function_exists(file_get_contents)) {
    $opts = array(
          http=>array(
        method=>"GET",
        header=>$Header,
          )
    );
        $cxContext = stream_context_create($opts);
        $file_contents = @file_get_contents($Url, false, $cxContext);
    } elseif ($Method === c&&function_exists(curl_init)) {
    $Ch = curl_init();
    $Timeout = 5;
        curl_setopt($Ch,CURLOPT_HTTPHEADER,$Header);
        curl_setopt ($Ch, CURLOPT_URL, $Url);
        curl_setopt ($Ch, CURLOPT_RETURNTRANSFER,1);
        curl_setopt ($Ch, CURLOPT_CONNECTTIMEOUT, $Timeout);
    $file_contents = curl_exec($Ch);
    curl_close($Ch);
    }
    //为了让样式显示得漂亮,我们给它加一句目标引向.
    $file_contents = str_replace(," ",$file_contents);
    //处理最常见的几种编码, 如果目标网站没有编码, 就默认为GBK
    !preg_match(/charset=([^"]*)"/isU,$file_contents,$lang) && $lang[1]=GBK;
    function_exists(mb_convert_encoding) && $file_contents = mb_convert_encoding($file_contents,empty($Charset)?UTF-8:$Charset,$lang[1]);
    //注销部分代码;
    unset($Url,$lang,$Timeout,$Urlarr,$Charset);
    return $file_contents;
    }

//测试开始测试用file_get_contents方式
HEADER("CONTENT-TYPE:TEXT/HTML; CHARSET=UTF-8");
//http://www.xtzj.com/read-htm-tid-347550.html 这是采集不到.
$file = get_url_content("http://www.hao123.com",f);
$file = strip_tags($file,);
preg_match_all(/(http:[^"]*)>/isU,$file,$link);unset($link[0]);
$link = $link[1];