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,...)
-HTTPVersion
-Server
-ContentType
-Date
-ThewholeheaderstringoftheURL
复制代码 代码如下:
<?
/**
*ClassforgettinginformationaboutURLs
*@authorSvenWagener<[email]sven.wagener@intertribe.de[/email]>
*@copyrightIntertribelimited
*@PHP中文社区收集整理[url]
*@includeFunktion:_include_
*/
classurl{

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

var$code=;
var$code_desc=;
var$http_version=;//VariableforHTTPversion

var$header_stream;
var$header_array;

var$timeout=1;

/**
*Constructorofclassurl
*@paramstring$urlthecompleteurl
*@descConstructorofclassurl
*/
functionurl($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();
}

/**
*Returnsthewholeurl
*@returnstring$urlthewholeurl
*@descReturnsthewholeurl
*/
functionget_url(){
return$this->url;
}

/**
*Returnsthehostoftheurl
*@returnstring$url_hostthehostoftheurl
*@descReturnsthehostoftheurl
*/
functionget_url_host(){
return$this->url_host;
}

/**
*Returnsthepathoftheurl
*@returnstring$url_paththepathoftheurl
*@descReturnsthepathoftheurl
*/
functionget_url_path(){
return$this->url_path;
}

/**
*Returnsthestatuscodeoftheurl
*@returnstring$status_codethestatuscode
*@descReturnsthestatuscodeoftheurl
*/
functionget_statuscode(){
return$this->code;
}

/**
*Returnsthestatuscodedescriptionoftheurl
*@returnstring$status_code_descthestatuscodedescription
*@descReturnsthestatuscodedescriptionoftheurl
*/
functionget_statuscode_desc(){
return$this->code_desc;
}

/**
*Returnsthehttpversionoftheurlbythereturnedheadersoftheserver
*@returnstring$http_versionthehttpversion
*@descReturnsthehttpversionoftheurlbythereturnedheadersoftheserver
*/
functionget_info_http_version(){
return$this->http_version;
}

/**
*Returnstheservertypeoftheurlshostbythereturnedheadersoftheserver
*@returnstringheader_array[Server]theservertype
*@descReturnstheservertypeoftheurlshostbythereturnedheadersoftheserver
*/
functionget_info_server(){
return$this->header_array[Server];
}

/**
*Returnsthedateoftheurlshostbythereturnedheadersoftheserver
*@returnstring$header_array[Date]thedate
*@descReturnsthedateoftheurlshostbythereturnedheadersoftheserver
*/
functionget_info_date(){
return$this->header_array[Date];
}

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

/**
*Returnsthecontenttypebythereturnedheadersoftheserver
*@returnstringheader_array[Content-Type]thecontenttype
*@descReturnsthecontenttypebythereturnedheadersoftheserver
*/
functionget_info_content_type(){
return$this->header_array[Content-Type];
}

/**
*Returnsthecontentoftheurlwithouttheheaders
*@returnstring$contentthecontent
*@descReturnsthecontentoftheurlwithouttheheaders
*/
functionget_content(){
//Getawebpageintoastring
$string=implode(,file($this->url));
return$string;
}

/**
*Returnsthewholeheaderofurlwithoutcontent
*@returnstring$headertheheader
*@descReturnsthewholeheaderofurlwithoutcontent
*/
functionget_header_stream(){
return$this->header_stream;
}

/**
*Returnsthewholeheadersoftheurlinanarray
*@returnarray$header_arraytheheadersinanarray
*@descReturnsthewholeheadersoftheurlinanarray
*/
functionget_headers(){
return$this->header_array;
}

/**
*Refreshestheheaderinformation
*@descRefreshestheheaderinformation
*/
functionrefresh_headerinfo(){
//Opensocketforconnectionviaport80toputheaders
$fp=fsockopen($this->url_host,80,$errno,$errstr,30);
if(!$fp){
//echo$errstr($errno);
if($errno==0){
$errstr=ServerNotFound;
}
$this->code=$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;

//Gettingheaderstringandcreatingheaderarray
$i=0;
while(!feof($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);

//GettingstatuscodeanddescriptionoftheURL
$this->code=$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];
}
}
//Cleaningupfornandr
$this->code_desc=preg_replace([\n],,$this->code_desc);
$this->code_desc=preg_replace([\r],,$this->code_desc);

//GettingHttpVersion
$http_array=split(/,$splitted_stream[0]);
$this->http_version=$http_array[1];
}
}

/**
*Setsthetimeoutforgettingheaderdatafromserver
*@paramint$secondstimefortimeoutinseconds
*@descSetsthetimeoutforgettingheaderdatafromserver
*/
functionset_timeout($seconds){
$this->timeout=$seconds;
}
}
?>

复制代码 代码如下:
<?php
include(url.class.php);
$url=newurl([url]

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

echo$headers[Server];

echo$url->get_content();
echoURL:<b>.$url->get_url().</b><br>n;
echoURLHost:.$url->get_url_host().<br>n;
echoURLPath:.$url->get_url_path().<br>n<br>n;

echoStatuscode:.$url->get_statuscode().<br>n;
echoStatuscodedescription:.$url->get_statuscode_desc().<br>n;
echoHTTPVersion:.$url->get_info_http_version().<br>n;
echoServer:.$url->get_info_server().<br>n;
echoContentType:.$url->get_info_content_type().<br>n;
echoDate:.$url->get_info_date().<br>n<br>n;

echoWHOLEHEADERS:<br>n;
echo$url->get_header_stream();
?>