本文实例讲述了php自定义类fsocket模拟post或get请求的方法。分享给大家供大家参考。具体如下：
zsocket.class.php文件如下：
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<?php
class zsocket {
/*
* init
*/
private function _fsockopen($host, $port, &$errno, &$errstr, $timeout){
$ip = @gethostbyname($host);
$s = @socket_create(af_inet, sock_stream, 0);
if(socket_set_nonblock($s)){
$r = @socket_connect($s, $ip, $port);
if ($r || socket_last_error() == einprogress) {
$errno = einprogress;
return $s;
}
}
$errno = socket_last_error($s);
$errstr = socket_strerror($errno);
socket_close($s);
return false;
}
/*
* 设置cookie
*/
private function _setcookie($cookie){
$_cookies = explode("; ",$cookie);
$_tmp = explode("=",$_cookies[0]);
setcookie($_tmp[0], $_tmp[1]);
return $_cookies;
}
/*
* 获取返回数据header内容
*/
private function _getdataheader(&$fp,&$reheader,&$cookies){
$maxlen = 0;
while(!feof($fp)){
$line = fgets($fp,1024);
if(substr($line, 0, 12) == 'set-cookie: '){ $cookies[] = $this->_setcookie(substr($line, 12)); }
$reheader .= $line;
if(substr($line, 0, 16) == 'content-length: '){
$maxlen = intval(substr($line, 16, -2));
}
if($line == "\r\n" || $line == "") break;
}
return $maxlen;
}
/*
* 获取返回数据正文内容
*/
private function _getdatabody(&$fp,$maxlen){
$redata = "";
while(!feof($fp)){
$line = fgets($fp,$maxlen+1);
$redata .= $line;
if(strlen($line) < $maxlen) $maxlen = $maxlen - strlen($line);
else break;
}
return $redata;
}
/*
* 设置并返回要发送的header内容
*/
public function get_headerinfo($host,$type='get',$file='/',$params=array(),$head=array(),$cookies=array()){
$_params = $_cookies = '';
if(is_array($params)){
foreach($params as $key=>$value){
$_params .= "&".$key."=".urlencode($value);
}
$_params = (strlen($_params) > 1) ? substr($_params,1) : '';
}else if(is_string($params)){
$_params = urlencode($params);
}
foreach($cookies as $key=>$value){
$_cookies .= "; ".$key."=".urlencode($value);
}
$_cookies = (strlen($_cookies) > 2) ? substr($_cookies,2) : '';
$file .= ($type == 'get') ? ($_params == '' ? '' : '?'.$_params) : '';
$header = $type." ".$file." http/1.1\r\n";
$header .= "host: ".$host."\r\n";
//$header .= "referer: ".get_ip()."\r\n";
//$header .= "x-forwarded-for: ".get_ip()."\r\n";
$header .= ($type == 'get') ? '' : "content-type: application/x-www-form-urlencoded\r\n";
if(is_array($head) && $head != array()){
foreach($head as $k=>$v){
$header .= $k.": ".$v."\r\n";
}
}
$header .= "content-length: ".strlen($_params)."\r\n";
if($_cookies != '') $header .= "cookie: ".$_cookies."\r\n";
/*
foreach($_server as $name => $value){
if(substr($name, 0, 5) == 'http_' && $name != 'http_host'){
$header .= str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5))))).":".$value."\r\n";
}
}
*/
$header .= "connection: close\r\n\r\n";
$header .= $_params."\r\n";
return $header;
}
/*
* 发送,并返回结果 array
*/
public function get_senddata($host,$port=80,$header=''){
if(function_exists('fsockopen')){
$fp = fsockopen($host,$port,$errno,$errstr,10);
}else if(function_exists('pfsockopen')){
$fp = pfsockopen($host,$port,$errno,$errstr,10);
}else if(function_exists('stream_socket_client')){
$fp = stream_socket_client($host.':'.$port,$errno,$errstr,10);
}else{
$fp = $this->_fsockopen($host,$port,$errno,$errstr,10);
}
$fp = fsockopen($host,$port,$errno,$errstr,10);
if(!$fp) return array('header'=>'','data'=>$errstr."--->".$errno,'cookie'=>'');
$reheader = $redata = "";
$cookies = array();
fputs($fp,$header);
$maxlen = $this->_getdataheader($fp,$reheader,$cookies);
$redata = $this->_getdatabody($fp,$maxlen);
fclose($fp);
return array('header'=>$reheader,'data'=>$redata,'cookie'=>$cookies);
}
}
demo代码如下：
$host = 'www.jb51.net';
$port = '80';
$type = 'post';
$file = '/';
$params = '';
//include_once('include/zsocket.class.php'); //include
$zsk = new zsocket();
$header = $zsk->get_headerinfo($host,$type,$file,$params);
$data = $zsk->get_senddata($host,$port,$header);
/*
echo "<!--\r\n";
print_r($header);
print_r($data);
echo "-->\r\n";
*/
var_dump($header);
var_dump($data);
希望本文所述对大家的php程序设计有所帮助。
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