一个用php实现的获取URL信息的类

获取URL信息的类

使用这个类，你能获得URL的如下信息：

- Host
- Path
- Statuscode （eg. 404,200, ...）
- HTTP Version
- Server
- Content Type
- Date
- The whole header string of the URL
复制代码代码如下:
<？
/**
* Class for getting information about URL"s
* @author Sven Wagener <[email]sven.wagener@intertribe.de[/email]>
* @copyright Intertribe limited
* @PHP中文社区收集整理 [url]www.phpNet.cn[/url]
* @include Funktion:_include_
*/
class url{

 var $url="";
 var $url_host;
 var $url_path;
 var $file="";

 var $code="";
 var $code_desc="";
 var $http_version=""; // Variable for HTTP version

 var $header_stream;
 var $header_array;

 var $timeout="1";

 /**
 * Constructor of class url
 * @param string $url the complete url
 * @desc Constructor of class url
 */
 function url（$url）{
 $this->url=$url;

 $url_array=parse_url（$this->url）;
 $this->url_host=$url_array["host"];
 $this->url_path=$url_array["path"];

 if（$this->url_path==""）{
 $this->url_path="/";
 }

 $this->refresh_headerinfo（）;
 }

 /**
 * Returns the whole url
 * @return string $url the whole url
 * @desc Returns the whole url
 */
 function get_url（）{
 return $this->url;
 }

 /**
 * Returns the host of the url
 * @return string $url_host the host of the url
 * @desc Returns the host of the url
 */
 function get_url_host（）{
 return $this->url_host;
 }

 /**
 * Returns the path of the url
 * @return string $url_path the path of the url
 * @desc Returns the path of the url
 */
 function get_url_path（）{
 return $this->url_path;
 }

 /**
 * Returns the status code of the url
 * @return string $status_code the status code
 * @desc Returns the status code of the url
 */
 function get_statuscode（）{
 return $this->code;
 }

 /**
 * Returns the status code description of the url
 * @return string $status_code_desc the status code description
 * @desc Returns the status code description of the url
 */
 function get_statuscode_desc（）{
 return $this->code_desc;
 }

 /**
 * Returns the http version of the url by the returned headers of the server
 * @return string $http_version the http version
 * @desc Returns the http version of the url by the returned headers of the server
 */
 function get_info_http_version（）{
 return $this->http_version;
 }

 /**
 * Returns the server type of the url"s host by the returned headers of the server
 * @return string header_array["Server"] the server type
 * @desc Returns the server type of the url"s host by the returned headers of the server
 */
 function get_info_server（）{
 return $this->header_array["Server"];
 }

 /**
 * Returns the date of the url"s host by the returned headers of the server
 * @return string $header_array["Date"] the date
 * @desc Returns the date of the url"s host by the returned headers of the server
 */
 function get_info_date（）{
 return $this->header_array["Date"];
 }

 /*
 function get_info_content_length（）{
 return $this->header_array["Content-Length"];
 }
 */

 /**
 * Returns the content type by the returned headers of the server
 * @return string header_array["Content-Type"] the content type
 * @desc Returns the content type by the returned headers of the server
 */
 function get_info_content_type（）{
 return $this->header_array["Content-Type"];
 }

 /**
 * Returns the content of the url without the headers
 * @return string $content the content
 * @desc Returns the content of the url without the headers
 */
 function get_content（）{
 // Get a web page into a string
 $string = implode （"", file （$this->url））;
 return $string;
 }

 /**
 * Returns the whole header of url without content
 * @return string $header the header
 * @desc Returns the whole header of url without content
 */
 function get_header_stream（）{
 return $this->header_stream;
 }

 /**
 * Returns the whole headers of the url in an array
 * @return array $header_array the headers in an array
 * @desc Returns the whole headers of the url in an array
 */
 function get_headers（）{
 return $this->header_array;
 }

 /**
 * Refreshes the header information
 * @desc Refreshes the header information
 */
 function refresh_headerinfo（）{
 // Open socket for connection via port 80 to put headers
 $fp = fsockopen （$this->url_host, 80, $errno, $errstr, 30）;
 if （！$fp） {
 // echo "$errstr （$errno）";
 if（$errno==0）{
 $errstr="Server Not Found";
 }
 $this->code=$errno;
 $this->code_desc=$errstr;
 } else {

 $put_string="GET ".$this->url_path." HTTP/1.0rnHost: ".$this->url_host."rnrn";
 fputs （$fp, $put_string）;
 @socket_set_timeout（$fp,$this->timeout）;

 $stream="";
 $this->header_array="";
 $header_end=false;

 // Getting header string and creating header array
 $i=0;
 while （！feof（$fp） && ！$header_end） {
 $line=fgets（$fp,128）;
 if（strlen（$line）==2）{
 $header_end=true;
 }else{
 if（$i==0）{
 $line1=$line;
 }
 $stream.=$line;
 $splitted_line=split（":",$line）;
 $this->header_array[$splitted_line[0]]=$splitted_line[1];
 $i++;
 }
 }
 fclose （$fp）;

 $this->header_stream=$stream;

 $splitted_stream=split（" ",$line1）;

 // Getting status code and description of the URL
 $this->code=$splitted_stream[1];
 $this->code_desc=$splitted_stream[2];
 if（count（$splitted_stream）>3）{
 for（$i=3;$i<count（$splitted_stream）;$i++）{
 $this->code_desc.=" ".$splitted_stream[$i];
 }
 }
 // Cleaning up for n and r
 $this->code_desc=preg_replace（"[ ]","",$this->code_desc）;
 $this->code_desc=preg_replace（"[ ]","",$this->code_desc）;

 // Getting Http Version
 $http_array=split（"/",$splitted_stream[0]）;
 $this->http_version=$http_array[1];
 }
 }

 /**
 * Sets the timeout for getting header data from server
 * @param int $seconds time for timeout in seconds
 * @desc Sets the timeout for getting header data from server
 */
 function set_timeout（$seconds）{
 $this->timeout=$seconds;
 }
}
？>

复制代码代码如下:
<？php
include（"url.class.php"）;
$url=new url（"[url]http://www.phpNet.cn/[/url]"）;

echo $url->get_header_stream（）;
$headers=$url->get_headers（）;

echo $headers["Server"];

echo $url->get_content（）;
echo "URL: ".$url->get_url（）." n";
echo "URL Host: ".$url->get_url_host（）." n";
echo "URL Path: ".$url->get_url_path（）." n n";

echo "Statuscode: ".$url->get_statuscode（）." n";
echo "Statuscode description: ".$url->get_statuscode_desc（）." n";
echo "HTTP Version: ".$url->get_info_http_version（）." n";
echo "Server: ".$url->get_info_server（）." n";
echo "Content Type: ".$url->get_info_content_type（）." n";
echo "Date: ".$url->get_info_date（）." n n";

echo "WHOLE HEADERS: n";
echo $url->get_header_stream（）;
？>