php远程下载类分享

本文实例为大家分享了php远程下载类，如下

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; 
} 
} 
} 
 

function OpenUrl($url) { 
#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 = ""; 
$this->m_httphead = "" ; 
$this->m_html = ""; 
$this->Close(); 
#初始化系统 
$this->PrivateInit($url); 
$this->PrivateStartSession(); 
} 
 

public function printError() { 
echo "错误信息：".$this->m_error; 
echo "具体返回头：
"; 
foreach($this->m_httphead as $k=>$v) { 
echo "$k => $v 
rn"; 
} 
} 
 

public function IsGetOK() { 
if( ereg("^2",$this->GetHead("http-state")) ) { 
return true; 
} else { 
$this->m_error .= $this->GetHead("http-state")." - ".$this->GetHead("http-describe")."
"; 
return false; 
} 
} 
 

public 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
"; 
return false; 
} 
} 

public 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")."
"; 
return false; 
} 
} 
 

public 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") or die("写入文件 $savefilename 失败！"); 
while (!feof($this->m_fp)) { 
@fwrite($fp,fgets($this->m_fp,256)); 
} 
@fclose($this->m_fp); 
return true; 
} 
 

public function SaveToText($savefilename) { 
if ($this->IsText()) { 
$this->SaveBinFile($savefilename); 
} else { 
return ""; 
} 
} 
 

public 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; 
} 
 

public function PrivateStartSession() { 
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 { 
$httpv = "HTTP/1.0"; 
} 
fputs($this->m_fp,"GET ".$this->m_urlpath." $httpvrn"); 
fputs($this->m_fp,"Host: ".$this->m_host."rn"); 
fputs($this->m_fp,"Accept: * 
public function GetHead($headname) { 
$headname = strtolower($headname); 
if (isset($this->m_httphead[$headname])) { 
return $this->m_httphead[$headname]; 
} else { 
return ""; 
} 
} 
 

public function PrivateOpenHost() { 
if ($this->m_host=="") return false; 
$this->m_fp = @fsockopen($this->m_host, $this->m_port, &$errno, &$errstr,10); 
if (!$this->m_fp){ 
$this->m_error = $errstr; 
return false; 
} else { 
return true; 
} 
} 
 

public function Close(){ 
@fclose($this->m_fp); 
} 
} 
 
#两种使用方法，分别如下： 
 
#打开网页 
$httpdown = new HttpDownload(); 
$httpdown->OpenUrl("http://www.google.com.hk"); 
echo $httpdown->GetHtml(); 
$httpdown->Close(); 
 
 
#下载文件 
$file = new HttpDownload(); # 实例化类 
$file->OpenUrl("http://dldir1.qq.com/qqfile/qq/QQ8.2/17724/QQ8.2.exe"); # 远程文件地址 
$file->SaveToBin("qq.exe"); # 保存路径及文件名 
$file->Close(); # 释放资源

以上就是本文的全部内容，希望对大家的学习有所帮助。