PHP reverse proxy code, php reverse proxy _ PHP Tutorial

PHP reverse proxy code, php reverse proxy. PHP reverse proxy code, php reverse proxy changed from phpreverseproxygp, modified some errors in the original version, supported file upload and file type identification, support for specifying IP address, PHP reverse proxy code, php reverse proxy

Modified from PHP Reverse Proxy GP, modified some errors in the original version, supported file upload and file type identification, and supported specifying IP addresses and adaptive SAE environment.

Usage

<?php$proxy=new PhpReverseProxy();$proxy->port="8080";$proxy->host="www.jb51.net";//$proxy->ip="1.1.1.1";$proxy->forward_path="";$proxy->connect();$proxy->output();?>

Source code

<?php//Source Code: http://www.xiumu.org/technology/php-reverse-proxy-class.shtmlclass PhpReverseProxy{ public $publicBaseURL; public $outsideHeaders; public $XRequestedWith; public $sendPost; public $port,$host,$ip,$content,$forward_path,$content_type,$user_agent,  $XFF,$request_method,$IMS,$cacheTime,$cookie,$authorization; private $http_code,$lastModified,$version,$resultHeader; const chunkSize = 10000; function __construct(){  $this->version="PHP Reverse Proxy (PRP) 1.0";  $this->port="8080";  $this->host="127.0.0.1";  $this->ip="";  $this->content="";  $this->forward_path="";  $this->path="";  $this->content_type="";  $this->user_agent="";  $this->http_code="";  $this->XFF="";  $this->request_method="GET";  $this->IMS=false;  $this->cacheTime=72000;  $this->lastModified=gmdate("D, d M Y H:i:s",time()-72000)." GMT";  $this->cookie="";  $this->XRequestedWith = "";  $this->authorization = ""; } function translateURL($serverName) {  $this->path=$this->forward_path.$_SERVER['REQUEST_URI'];  if(IS_SAE)   return $this->translateServer($serverName).$this->path;  if($_SERVER['QUERY_STRING']=="")   return $this->translateServer($serverName).$this->path;  else  return $this->translateServer($serverName).$this->path."?".$_SERVER['QUERY_STRING']; } function translateServer($serverName) {  $s = empty($_SERVER["HTTPS"]) ? ''   : ($_SERVER["HTTPS"] == "on") ? "s"   : "";  $protocol = $this->left(strtolower($_SERVER["SERVER_PROTOCOL"]), "/").$s;  if($this->port=="")    return $protocol."://".$serverName;  else   return $protocol."://".$serverName.":".$this->port; } function left($s1, $s2) {  return substr($s1, 0, strpos($s1, $s2)); } function preConnect(){  $this->user_agent=$_SERVER['HTTP_USER_AGENT'];  $this->request_method=$_SERVER['REQUEST_METHOD'];  $tempCookie="";  foreach ($_COOKIE as $i => $value) {   $tempCookie=$tempCookie." $i=$_COOKIE[$i];";  }  $this->cookie=$tempCookie;  if(empty($_SERVER['HTTP_X_FORWARDED_FOR'])){   $this->XFF=$_SERVER['REMOTE_ADDR'];  } else {   $this->XFF=$_SERVER['HTTP_X_FORWARDED_FOR'].", ".$_SERVER['REMOTE_ADDR'];  }  } function connect(){  if(empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])){   $this->preConnect();   $ch=curl_init();   if($this->request_method=="POST"){    curl_setopt($ch, CURLOPT_POST,1);     $postData = array();    $filePost = false;    $uploadPath = 'uploads/';    if (IS_SAE)      $uploadPath = SAE_TMP_PATH;     if(count($_FILES)>0){      if(!is_writable($uploadPath)){        die('You cannot upload to the specified directory, please CHMOD it to 777.');      }      foreach($_FILES as $key => $fileArray){         copy($fileArray["tmp_name"], $uploadPath . $fileArray["name"]);        $proxyLocation = "@" . $uploadPath . $fileArray["name"] . ";type=" . $fileArray["type"];        $postData = array($key => $proxyLocation);        $filePost = true;      }    }     foreach($_POST as $key => $value){      if(!is_array($value)){     $postData[$key] = $value;      }      else{     $postData[$key] = serialize($value);      }    }     if(!$filePost){      //$postData = http_build_query($postData);      $postString = "";      $firstLoop = true;      foreach($postData as $key => $value){      $parameterItem = urlencode($key)."=".urlencode($value);      if($firstLoop){     $postString .= $parameterItem;      }      else{     $postString .= "&".$parameterItem;      }      $firstLoop = false;       }      $postData = $postString;    }     //echo print_r($postData);     //curl_setopt($ch, CURLOPT_VERBOSE, 0);    //curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    //curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible;)");    $this->sendPost = $postData;    //var_dump(file_exists(str_replace('@','',$postData['imgfile'])));exit;    curl_setopt($ch, CURLOPT_POSTFIELDS,$postData);    //curl_setopt($ch, CURLOPT_POSTFIELDS,file_get_contents($proxyLocation));    //curl_setopt($ch, CURLOPT_POSTFIELDS,file_get_contents("php://input"));   }    //gets rid of mulitple ? in URL   $translateURL = $this->translateURL(($this->ip)?$this->ip:$this->host);   if(substr_count($translateURL, "?")>1){     $firstPos = strpos($translateURL, "?", 0);     $secondPos = strpos($translateURL, "?", $firstPos + 1);     $translateURL = substr($translateURL, 0, $secondPos);   }    curl_setopt($ch,CURLOPT_URL,$translateURL);    $proxyHeaders = array(     "X-Forwarded-For: ".$this->XFF,     "User-Agent: ".$this->user_agent,     "Host: ".$this->host   );    if(strlen($this->XRequestedWith)>1){     $proxyHeaders[] = "X-Requested-With: ".$this->XRequestedWith;     //echo print_r($proxyHeaders);   }    curl_setopt($ch,CURLOPT_HTTPHEADER, $proxyHeaders);    if($this->cookie!=""){    curl_setopt($ch,CURLOPT_COOKIE,$this->cookie);   }   curl_setopt($ch,CURLOPT_FOLLOWLOCATION,false);    curl_setopt($ch,CURLOPT_AUTOREFERER,true);    curl_setopt($ch,CURLOPT_HEADER,true);   curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);    $output=curl_exec($ch);   $info = curl_getinfo( $ch );   curl_close($ch);   $this->postConnect($info,$output);  }else {   $this->lastModified=$_SERVER['HTTP_IF_MODIFIED_SINCE'];   $this->IMS=true;  } } function postConnect($info,$output){  $this->content_type=$info["content_type"];  $this->http_code=$info['http_code'];  //var_dump($info);exit;  if(!empty($info['last_modified'])){   $this->lastModified=$info['last_modified'];  }  $this->resultHeader=substr($output,0,$info['header_size']);  $content = substr($output,$info['header_size']);   if($this->http_code=='200'){   $this->content=$content;  }elseif( ($this->http_code=='302' || $this->http_code=='301') && isset($info['redirect_url'])){   $redirect_url = str_replace($this->host,$_SERVER['HTTP_HOST'],$info['redirect_url']);   if (IS_SAE)     $redirect_url = str_replace('http://fetchurl.sae.sina.com.cn/','',$info['redirect_url']);   header("Location: $redirect_url");   exit;  }elseif($this->http_code=='404'){   header("HTTP/1.1 404 Not Found");   exit("HTTP/1.1 404 Not Found");  }elseif($this->http_code=='500'){   header('HTTP/1.1 500 Internal Server Error');   exit("HTTP/1.1 500 Internal Server Error");  }else{   exit("HTTP/1.1 ".$this->http_code." Internal Server Error");  } }  function output(){  $currentTimeString=gmdate("D, d M Y H:i:s",time());  $expiredTime=gmdate("D, d M Y H:i:s",(time()+$this->cacheTime));   $doOriginalHeaders = true;  if($doOriginalHeaders){    if($this->IMS){     header("HTTP/1.1 304 Not Modified");     header("Date: Wed, $currentTimeString GMT");     header("Last-Modified: $this->lastModified");     header("Server: $this->version");    }else{      header("HTTP/1.1 200 OK");     header("Date: Wed, $currentTimeString GMT");     header("Content-Type: ".$this->content_type);     header("Last-Modified: $this->lastModified");     header("Cache-Control: max-age=$this->cacheTime");     header("Expires: $expiredTime GMT");     header("Server: $this->version");     preg_match("/Set-Cookie:[^\n]*/i",$this->resultHeader,$result);     foreach($result as $i=>$value){      header($result[$i]);     }     preg_match("/Content-Encoding:[^\n]*/i",$this->resultHeader,$result);     foreach($result as $i=>$value){      //header($result[$i]);     }     preg_match("/Transfer-Encoding:[^\n]*/i",$this->resultHeader,$result);     foreach($result as $i=>$value){      //header($result[$i]);     }     echo($this->content);     /*     if(stristr($this->content, "error")){    echo print_r($this->sendPost);     }     */    }  }  else{    $headerString = $this->resultHeader; //string     $headerArray = explode("\n", $headerString);    foreach($headerArray as $privHeader){   header($privHeader);    }     if(stristr($headerString, "Transfer-encoding: chunked")){   flush();   ob_flush();   $i = 0;   $maxLen = strlen($this->content);    while($i < $maxLen){     $endChar = $i + self::chunkSize;     if($endChar >= $maxLen){    $endChar = $maxLen - 1;     }     $chunk = substr($this->content, $i, $endChar);     $this->dump_chunk($chunk);     flush();     ob_flush();     $i = $i + $endChar;   }    }    else{    echo($this->content);    }     //echo "header: ".print_r($headerArray);    //header($this->resultHeader);  }  }   function dump_chunk($chunk) {   echo sprintf("%x\r\n", strlen($chunk));   echo $chunk;   echo "\r\n"; }   function getOutsideHeaders(){   $headers = array();   foreach ($_SERVER as $name => $value){   if (substr($name, 0, 5) == 'HTTP_') {     $name = str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))));     $headers[$name] = $value;   }elseif ($name == "CONTENT_TYPE") {     $headers["Content-Type"] = $value;   }elseif ($name == "CONTENT_LENGTH") {     $headers["Content-Length"] = $value;   }elseif(stristr($name, "X-Requested-With")) {     $headers["X-Requested-With"] = $value;    $this->XRequestedWith = $value;  }   }     //echo print_r($headers);    $this->outsideHeaders = $headers;   return $headers; }  }?>

How to write such a PHP proxy?

Edit the domain name redirection code by yourself. for example, create an index. php file in the home directory of a domain name access address, use the code in this file to obtain the domain name, and then use the judgment statement. if the domain name "www.a.com/sd.htm.pdf" is determined, a directory of. Or in. in htaccess, this setting is available in many frameworks, but some servers do not support this file or some content in the file, so that the website may not be available, try more by yourself.

Php calls methods of another class. the following code cannot be executed. why?

A. php file
# First introduce the storage file containing class B.
Include 'B. php'
Class {
Public static function a1 (){
Private static function a2 (){
Self: $ B = B: B ();
}
}
}
B. php file
Class B {
Public static B (){
Return ^;
}
}

The token is changed from PHP Reverse Proxy Paster. it modifies some errors in the original version, supports file upload and file type identification, and supports specifying IP addresses, from...