当前位置: 首页 > 图文教程 > 网络编程 > PHP > 织梦cms的php采集类

PHP
php 多线程上下文中安全写文件实现代码
PHP类的使用 实例代码讲解
用php实现让页面只能被百度gogole蜘蛛访问的方法
php 学习笔记
PHP编程过程中需要了解的this,self,parent的区别
php 操作excel文件的方法小结
使用PHP获取网络文件的实现代码
PHP 巧用数组降低程序的时间复杂度
php下将XML转换为数组
php 文件上传代码(限制jpg文件)
php 无极分类(递归)实现代码
PHP 采集获取指定网址的内容
PHP 将图片按创建时间进行分类存储的实现代码
PHP 存储文本换行实现方法
PHP 批量更新网页内容实现代码
用PHP查询搜索引擎排名位置的代码
用php实现的获取网页中的图片并保存到本地的代码
php实现首页链接查询 友情链接检查的代码
处理php自动反斜杠的函数代码
php实现的遍历文件夹下所有文件,编辑删除

No. « 216 217 218 219 »

技术文章搜索

关键字

PHP 中的 织梦cms的php采集类

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-08-14   浏览: 98 ::
收藏到网摘: n/a

以下为引用的内容：
<?php
@set_time_limit(0);
/*=======================================
//织梦Http下载类V1.1版，本版增加了POST发送数据的方式
//把要POST的数据像GET一样跟在网址后，程序会自动处理，并用POST方式发送
//POST仅支持application/x-www-form-urlencoded方式
=======================================*/
class DedeHttpDown
{
    var $m_url = "";
    var $m_urlpath = "";
    var $m_scheme = "http";
    var $m_host = "";
    var $m_port = "80";
    var $m_user = "";
    var $m_pass = "";
    var $m_path = "/";
    var $m_query = "";
    var $m_fp = "";
    var $m_error = "";
    var $m_httphead = "" ;
    var $m_html = "";
    var $m_puthead = "";
    var $BaseUrlPath = "";
    var $HomeUrl = "";
    var $JumpCount = 0;//防止多重重定向陷入死循环
    //
    //初始化系统
    //
    function PrivateInit($url)
    {
            if($url=="") return ;
            $urls = "";
            $urls = @parse_url($url);
            $this->m_url = $url;
        if(is_array($urls))
        {
              $this->m_host = $urls["host"];
              if(!empty($urls["scheme"])) $this->m_scheme = $urls["scheme"];
              
              if(!empty($urls["user"])){
                    $this->m_user = $urls["user"];
              }
              
              if(!empty($urls["pass"])){
                    $this->m_pass = $urls["pass"];
              }

              if(!empty($urls["port"])){
                    $this->m_port = $urls["port"];
              }
              
              if(!empty($urls["path"])) $this->m_path = $urls["path"];
              $this->m_urlpath = $this->m_path;
              
              if(!empty($urls["query"])){
                    $this->m_query = $urls["query"];
                    $this->m_urlpath .= "?".$this->m_query;
              }
              $this->HomeUrl = $urls["host"];
              $this->BaseUrlPath = $this->HomeUrl.$urls["path"];
              $this->BaseUrlPath = preg_replace("/\/([^\/]*)\.(.*)$/","/",$this->BaseUrlPath);
              $this->BaseUrlPath = preg_replace("/\/$/","",$this->BaseUrlPath);
         }
    }
    function ResetAny()
    {
        //重设各参数
        $this->m_url = "";
        $this->m_urlpath = "";
        $this->m_scheme = "http";
        $this->m_host = "";
        $this->m_port = "80";
        $this->m_user = "";
        $this->m_pass = "";
        $this->m_path = "/";
        $this->m_query = "";
        $this->m_error = "";
    }
    //
    //打开指定网址
    //
    function OpenUrl($url,$requestType="GET")
    {
        $this->ResetAny();
        $this->JumpCount = 0;
        $this->m_httphead = Array() ;
        $this->m_html = "";
        $this->Close();
        //初始化系统
        $this->PrivateInit($url);
        $this->PrivateStartSession($requestType);
    }
    //
    //转到303重定向网址
    //
    function JumpOpenUrl($url)
    {
        $this->ResetAny();
        $this->JumpCount++;
        $this->m_httphead = Array() ;
        $this->m_html = "";
        $this->Close();
        //初始化系统
        $this->PrivateInit($url);
        $this->PrivateStartSession('GET');
    }
    //
    //获得某操作错误的原因
    //
    function printError()
    {
        echo "错误信息：".$this->m_error;
        echo "<br/>具体返回头：<br/>";
        foreach($this->m_httphead as $k=>$v){ echo "$k => $v <br/>\r\n"; }
    }
    //
    //判别用Get方法发送的头的应答结果是否正确
    //
    function IsGetOK()
    {
        if( ereg("^2",$this->GetHead("http-state")) ){    return true; }
        else{
            $this->m_error .= $this->GetHead("http-state")." - ".$this->GetHead("http-describe")."<br/>";
            return false;
        }
    }
    //
    //看看返回的网页是否是text类型
    //
    function IsText()
    {
        if(ereg("^2",$this->GetHead("http-state"))
            && eregi("^text",$this->GetHead("content-type")))
        {    return true; }
        else
        {
            $this->m_error .= "内容为非文本类型或网址重定向<br/>";
            return false;
        }
    }
    //
    //判断返回的网页是否是特定的类型
    //
    function IsContentType($ctype)
    {
        if(ereg("^2",$this->GetHead("http-state"))
            && $this->GetHead("content-type")==strtolower($ctype))
        {    return true; }
        else
        {
            $this->m_error .= "类型不对 ".$this->GetHead("content-type")."<br/>";
            return false;
        }
    }
    //
    //用Http协议下载文件
    //
    function SaveToBin($savefilename)
    {
        if(!$this->IsGetOK()) return false;
        if(@feof($this->m_fp)) { $this->m_error = "连接已经关闭！"; return false; }
        
        $fp = fopen($savefilename,"w");
        while(!feof($this->m_fp)){
            fwrite($fp,fread($this->m_fp,1024));
        }
        fclose($this->m_fp);
        
        fclose($fp);
        return true;
    }
    //
    //保存网页内容为Text文件
    //
    function SaveToText($savefilename)
    {
        if($this->IsText()) $this->SaveBinFile($savefilename);
        else return "";
    }

    function SaveFile($savefilename,$somecontent=''){
        $filename=$savefilename;
        $somecontent = $somecontent==''?$this->GetHtml():$somecontent;
       // if (is_writable($filename)) {
            // 在这个例子里，我们将使用添加模式打开$filename，
            // 因此，文件指针将会在文件的开头，
            // 那就是当我们使用fwrite()的时候，$somecontent将要写入的地方。
            if (!$handle = fopen($filename, 'w')) {
                echo "can not open $filename";
                return false;
              //exit;
            }
            // 将$somecontent写入到我们打开的文件中。
            if (!fwrite($handle, $somecontent) ) {
                echo "can not write $filename";
                //exit;
                return false;
            }
            //echo "成功地将 $somecontent 写入到文件$filename";
            fclose($handle);
            //die( $savefilename);
           return true;
       /*     } else {
                echo "file $filename cannot";
                return false;
            }*/

    }
    //
    //用Http协议获得一个网页的内容
    //
    function GetHtml()
    {
        if(!$this->IsText()) return "";
        if($this->m_html!="") return $this->m_html;
        if(!$this->m_fp||@feof($this->m_fp)) return "";
        while(!feof($this->m_fp)){
            $this->m_html .= fgets($this->m_fp,256);
        }
        @fclose($this->m_fp);
        return $this->m_html;
    }

    
    //
    //开始HTTP会话
    //
    function PrivateStartSession($requestType="GET")
    {
        
        if(!$this->PrivateOpenHost()){
            $this->m_error .= "打开远程主机出错!";
            return false;
        }
        
        if($this->GetHead("http-edition")=="HTTP/1.1") $httpv = "HTTP/1.1";
        else $httpv = "HTTP/1.0";
        
        $ps = explode('?',$this->m_urlpath);
        //发送固定的起始请求头GET、Host信息
        if($requestType=="GET") fputs($this->m_fp,"GET ".$this->m_urlpath." $httpv\r\n");
        else fputs($this->m_fp,"POST ".$ps[0]." $httpv\r\n");
        $this->m_puthead["Host"] = $this->m_host;
        
        //发送用户自定义的请求头
        if(!isset($this->m_puthead["Accept"])) { $this->m_puthead["Accept"] = "*/*"; }
        if(!isset($this->m_puthead["User-Agent"])) { $this->m_puthead["User-Agent"] = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2)"; }
        
        if(!empty($GLOBALS['RfUrl'])) $this->m_puthead["Refer"] = $GLOBALS['RfUrl'];
        else if(!isset($this->m_puthead["Refer"])) { $this->m_puthead["Refer"] = "http://".$this->m_puthead["Host"]; }
        
        foreach($this->m_puthead as $k=>$v){
            $k = trim($k);
            $v = trim($v);
            if($k!=""&&$v!=""){
                fputs($this->m_fp,"$k: $v\r\n");
            }
        }
        
        if($requestType=="POST"){
           $postdata = "";
           if(count($ps)>1){
               for($i=1;$i<count($ps);$i++) $postdata .= $ps[$i];
           }
           else{ $postdata = "OK"; }
           $plen = strlen($postdata);
           fputs($this->m_fp,"Content-Type: application/x-www-form-urlencoded\r\n");
           fputs($this->m_fp,"Content-Length: $plen\r\n");
      }
        
        //发送固定的结束请求头
        //HTTP1.1协议必须指定文档结束后关闭链接,否则读取文档时无法使用feof判断结束
        if($httpv=="HTTP/1.1") fputs($this->m_fp,"Connection: Close\r\n\r\n");
        else fputs($this->m_fp,"\r\n");
        
        if($requestType=="POST"){
           fputs($this->m_fp,$postdata);
      }
        
        //获取应答头状态信息
        $httpstas = explode(" ",fgets($this->m_fp,256));
        $this->m_httphead["http-edition"] = trim($httpstas[0]);
        $this->m_httphead["http-state"] = trim($httpstas[1]);
        $this->m_httphead["http-describe"] = "";
        for($i=2;$i<count($httpstas);$i++){
            $this->m_httphead["http-describe"] .= " ".trim($httpstas[$i]);
        }
        //获取详细应答头
        while(!feof($this->m_fp)){
            $line = trim(fgets($this->m_fp,256));
            if($line == "") break;
            $hkey = "";
            $hvalue = "";
            $v = 0;
            for($i=0;$i<strlen($line);$i++){
                if($v==1) $hvalue .= $line[$i];
                if($line[$i]==":") $v = 1;
                if($v==0) $hkey .= $line[$i];
            }
            $hkey = trim($hkey);
            if($hkey!="") $this->m_httphead[strtolower($hkey)] = trim($hvalue);
        }
        
        //判断是否是3xx开头的应答
        if(ereg("^3",$this->m_httphead["http-state"]))
        {
            if($this->JumpCount > 3) return;
            if(isset($this->m_httphead["location"])){
                $newurl = $this->m_httphead["location"];
                if(eregi("^http",$newurl)){
                    $this->JumpOpenUrl($newurl);
                }
                else{
                    $newurl = $this->FillUrl($newurl);
                    $this->JumpOpenUrl($newurl);
                }
            }
            else
            {    $this->m_error = "无法识别的答复！"; }
        }//
    }
    //
    //获得一个Http头的值
    //
    function GetHead($headname)
    {
        $headname = strtolower($headname);
        if(isset($this->m_httphead[$headname]))
            return $this->m_httphead[$headname];
        else
            return "";
    }
    //
    //设置Http头的值
    //
    function SetHead($skey,$svalue)
    {
        $this->m_puthead[$skey] = $svalue;
    }
    //
    //打开连接
    //
    function PrivateOpenHost()
    {
        if($this->m_host=="") return false;
        $errno = "";
        $errstr = "";
        $this->m_fp = @fsockopen($this->m_host, $this->m_port, $errno, $errstr,10);
        if(!$this->m_fp){
            $this->m_error = $errstr;
            return false;
        }
        else{ return true; }
    }
    //
    //关闭连接
    //
    function Close(){
        @fclose($this->m_fp);
    }
    //
    //补全相对网址
    //
    function FillUrl($surl)
  {
    $i = 0;
    $dstr = "";
    $pstr = "";
    $okurl = "";
    $pathStep = 0;
    $surl = trim($surl);
    if($surl=="") return "";
    $pos = strpos($surl,"#");
    if($pos>0) $surl = substr($surl,0,$pos);
    if($surl[0]=="/"){
        $okurl = "http://".$this->HomeUrl.$surl;
    }
    else if($surl[0]==".")
    {
      if(strlen($surl)<=1) return "";
      else if($surl[1]=="/")
      {
          $okurl = "http://".$this->BaseUrlPath."/".substr($surl,2,strlen($surl)-2);
        }
      else{
        $urls = explode("/",$surl);
        foreach($urls as $u){
          if($u=="..") $pathStep++;
          else if($i<count($urls)-1) $dstr .= $urls[$i]."/";
          else $dstr .= $urls[$i];
          $i++;
        }
        $urls = explode("/",$this->BaseUrlPath);
        if(count($urls) <= $pathStep)
            return "";
        else{
          $pstr = "http://";
          for($i=0;$i<count($urls)-$pathStep;$i++)
          { $pstr .= $urls[$i]."/"; }
          $okurl = $pstr.$dstr;
        }
      }
    }
    else
    {
      if(strlen($surl)<7)
        $okurl = "http://".$this->BaseUrlPath."/".$surl;
      else if(strtolower(substr($surl,0,7))=="http://")
        $okurl = $surl;
      else
        $okurl = "http://".$this->BaseUrlPath."/".$surl;
    }
    $okurl = eregi_replace("^([url]http://)[/url]","",$okurl);
    $okurl = eregi_replace("/{1,}","/",$okurl);
    return "http://".$okurl;
  }
}
?>