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][/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="http://www.jb51.net/"; }
$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 $this->code_desc=preg_replace("[n]","",$this->code_desc); $this->code_desc=preg_replace("[r]","",$this->code_desc);
// Getting Http Version $http_array=split("http://www.jb51.net/",$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: (编辑:焦作站长网)
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