淺析織夢cms的php采集類_PHP教程
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| 以下為引用的內容： <?php @set_time_limit(0); /*======================================= //織夢Http下載類V1.1版，本版增加了POST發送數據的方式 //把要POST的數據像GET一樣跟在網址后，程序會自動處理，并用POST方式發送 //POST僅支持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 $JumpCount = 0;//防止多重重定向陷入死循環 // //初始化系統 // function PrivateInit($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() { //重設各參數 $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 = ""; $this->m_error = ""; } // //打開指定網址 // function OpenUrl($url,$requestType="GET") { $this->ResetAny(); $this->JumpCount = 0; $this->m_httphead = Array() ; $this->m_html = ""; $this->Close(); //初始化系統 $this->PrivateInit($url); $this->PrivateStartSession($requestType); } // //轉到303重定向網址 // function JumpOpenUrl($url) { $this->ResetAny(); $this->JumpCount ; $this->m_httphead = Array() ; $this->m_html = ""; $this->Close(); //初始化系統 $this->PrivateInit($url); $this->PrivateStartSession('GET'); } // //獲得某操作錯誤的原因 // function printError() { echo "錯誤信息：".$this->m_error; echo "<br/>具體返回頭：<br/>"; foreach($this->m_httphead as $k=>$v){ echo "$k => $v <br/>\r\n"; } } // //判別用Get方法發送的頭的應答結果是否正確 // function IsGetOK() { if( ereg("^2",$this->GetHead("http-state")) ){ return true; } else{ $this->m_error .= $this->GetHead("http-state")." - ".$this->GetHead("http-describe")."<br/>"; return false; } } // //看看返回的網頁是否是text類型 // function IsText() { if(ereg("^2",$this->GetHead("http-state")) && eregi("^text",$this->GetHead("content-type"))) { return true; } else { $this->m_error .= "內容為非文本類型或網址重定向<br/>"; return false; } } // //判斷返回的網頁是否是特定的類型 // function IsContentType($ctype) { if(ereg("^2",$this->GetHead("http-state")) && $this->GetHead("content-type")==strtolower($ctype)) { return true; } else { $this->m_error .= "類型不對 ".$this->GetHead("content-type")."<br/>"; return false; } } // //用Http協議下載文件 // function SaveToBin($savefilename) { if(!$this->IsGetOK()) return false; if(@feof($this->m_fp)) { $this->m_error = "連接已經關閉！"; return false; } $fp = fopen($savefilename,"w"); while(!feof($this->m_fp)){ fwrite($fp,fread($this->m_fp,1024)); } fclose($this->m_fp); fclose($fp); return true; } // //保存網頁內容為Text文件 // function SaveToText($savefilename) { if($this->IsText()) $this->SaveBinFile($savefilename); else return ""; } function SaveFile($savefilename,$somecontent=''){ $filename=$savefilename; $somecontent = $somecontent==''?$this->GetHtml():$somecontent; // if (is_writable($filename)) { // 在這個例子里，我們將使用添加模式打開$filename， // 因此，文件指針將會在文件的開頭， // 那就是當我們使用fwrite()的時候，$somecontent將要寫入的地方。 if (!$handle = fopen($filename, 'w')) { echo "can not open $filename"; return false; //exit; } // 將$somecontent寫入到我們打開的文件中。 if (!fwrite($handle, $somecontent) ) { echo "can not write $filename"; //exit; return false; } //echo "成功地將 $somecontent 寫入到文件$filename"; fclose($handle); //die( $savefilename); return true; /* } else { echo "file $filename cannot"; return false; }*/ } // //用Http協議獲得一個網頁的內容 // function GetHtml() { if(!$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 $this->m_html; } // //開始HTTP會話 // function PrivateStartSession($requestType="GET") { if(!$this->PrivateOpenHost()){ $this->m_error .= "打開遠程主機出錯!"; return false; } if($this->GetHead("http-edition")=="HTTP/1.1") $httpv = "HTTP/1.1"; else $httpv = "HTTP/1.0"; $ps = explode('?',$this->m_urlpath); //發送固定的起始請求頭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"] = $this->m_host; //發送用戶自定義的請求頭 if(!isset($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: $plen\r\n"); } //發送固定的結束請求頭 //HTTP1.1協議必須指定文檔結束后關閉鏈接,否則讀取文檔時無法使用feof判斷結束 if($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); } //獲取應答頭狀態信息 $httpstas = explode(" ",fgets($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[$i]); } //獲取詳細應答頭 while(!feof($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($hvalue); } //判斷是否是3xx開頭的應答 if(ereg("^3",$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 { $this->m_error = "無法識別的答復！"; } }// } // //獲得一個Http頭的值 // function GetHead($headname) { $headname = strtolower($headname); if(isset($this->m_httphead[$headname])) return $this->m_httphead[$headname]; else return ""; } // //設置Http頭的值 // function SetHead($skey,$svalue) { $this->m_puthead[$skey] = $svalue; } // //打開連接 // function PrivateOpenHost() { if($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 = $errstr; return false; } else{ return true; } } // //關閉連接 // function Close(){ @fclose($this->m_fp); } // //補全相對網址 // 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; } } ?> |
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PHP教程-淺析織夢cms的php采集類
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