php 模拟用户浏览网页代码

<?php

class HttpRequest
{
var $sHostAdd;
var $sUri;
var $iPort;
var $sRequestHeader;
var $sResponse;
function HttpRequest($sUrl){
$sPatternUrlPart = '/http://([a-z-.0-9]+)(:(d+)){0,1}(.*)/i';
$arMatchUrlPart = array();
preg_match($sPatternUrlPart, $sUrl, $arMatchUrlPart);
$this->sHostAdd = gethostbyname($arMatchUrlPart[1]);
if (empty($arMatchUrlPart[4])){
$this->sUri = '/';
}else{
$this->sUri = $arMatchUrlPart[4];
}
if (empty($arMatchUrlPart[3])){
$this->iPort = 80;
}else{
$this->iPort = $arMatchUrlPart[3];
}
$this->addRequestHeader('Host: '.$arMatchUrlPart[1]);
$this->addRequestHeader('Connection: Close');
}
function addRequestHeader($sHeader){
$this->sRequestHeader .= trim($sHeader)."rn";
}
function sendRequest($sMethod = 'GET', $sPostData = ''){
$sRequest = $sMethod." ".$this->sUri." HTTP/1.1rn";
$sRequest .= $this->sRequestHeader;
if ($sMethod == 'POST'){
$sRequest .= "Content-Type: application/x-www-form-urlencodedrn";
$sRequest .= "Content-Length: ".strlen($sPostData)."rn";
$sRequest .= "rn";
$sRequest .= $sPostData."rn";
}
$sRequest .= "rn";
$sockHttp = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if (!$sockHttp){
die('socket_create() failed!');
}
$resSockHttp = socket_connect($sockHttp, $this->sHostAdd, $this->iPort);
if (!$resSockHttp){
die('socket_connect() failed!');
}
socket_write($sockHttp, $sRequest, strlen($sRequest));
$this->sResponse = '';
while ($sRead = socket_read($sockHttp, 4096)){
$this->sResponse .= $sRead;
}
socket_close($sockHttp);
}
function getResponse(){
return $this->sResponse;
}
function getResponseBody(){
$sPatternSeperate = '/rnrn/';
$arMatchResponsePart = preg_split($sPatternSeperate, $this->sResponse, 2);
return $arMatchResponsePart[1];
}
function getResponseHead(){
$sPatternSeperate = '/rnrn/';
$arMatchResponsePart = preg_split($sPatternSeperate, $this->sResponse, 2);
return $arMatchResponsePart[0];
}
}

?>